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Aplusclick Practical Questions
Captain Hook has two pieces of rope. One piece of rope is 56 meters and the . . .
A tap drips one drop of water every second. It takes 3000 such drops to fill a . . .
The typical healthy resting heart rate in adults is 60–80 beats per minute. . . .
Multiply all the digits of each license plate without using a calculator. . . .
A photographer will pay me $3600 per hour of taking a picture of my smile. . . .
John was ranked fifth from the top and sixteenth from the bottom after a test. . . .
Guesstimation. Anna has 100,000 strands of hair with an average length of 40 . . .
Captain Hook has two pieces of rope. One piece of rope is 84 meters and the . . .
The typical healthy resting heart rate in adults is 60–80 beats per minute. . . .
Multiply all the digits of each license plate without using a calculator. . . .
Which is the largest number?
Estimate the number of Metro stations.
What is the smallest passcode that is evenly divisible by all of the numbers . . .
January 1st, 2014 was a Wednesday. How many Sundays occurred in 2014? 2014 . . .
Estimate the product of the digits of the number 7777777.
In London 2012, the USA won 46 gold, 28 silver and 29 bronze medals. Great . . .
Identify the graph that best represents the relationship between the number of . . .
Ten teams enter a basketball tournament. Each team plays one match against . . .
The girl is 10% taller than the boy. In ten years, he will be 50% taller than . . .
Multimedia Messaging Service, or MMS, is a standard way to send messages that . . .
Nine teams enter a basketball tournament. Each team plays one match against . . .
Multimedia Messaging Service, or MMS, is a standard way to send messages that . . .
A baby is born every six hours, three deaths occur every week, and five . . .
John saved $7 each week and spent $10 on visiting the cinema with his . . .
A swimming pool is 12.5 x 8 x 3 meters. The average volume of a human body is . . .
A grocer divides 171kg of potatoes into 5kg and 2kg bags. If the grocer . . .
A tree increases its number of nuts at the rate of 100% every year. What was . . .
What amount of water should be added to reduce 200 milliliters of 5 percent fat . . .
How many Wednesdays are there in the month of January that starts on Monday?
The weights of each pair of these boxes are 98kg, 101kg, and 102kg. What is . . .
Two tourists paddled downstream for 2 hours and then upstream for 4 hours. . . .
A group of 22 scouts goes on a trip. They prepare enough food to last 18 days. . . .
Mr. Rapid always starts driving on a motorway at exactly 7:00 a.m. If he . . .
In a recent election, 1111 people voted for two parties. If the ratio of the . . .
The wind in the open-air swimming pool increases the westward swimming speed . . .
The rear tires of my car wear out after 40,000 miles, whilst the front tires . . .
I have 1 ton of coins that are 80% gold and 20% copper. I want to melt them . . .
A retailer offers a 25% discount off the normal price of a wooden puzzle. She . . .
A driver's odometer reads 0515 km and the clock reads 05:15 before leaving on a . . .
A girl rides her bike 4 km in 15 minutes. How long will it take her to ride 15 . . .
On an island, the ratio between the number of adult men and the number of adult . . .
Divine the value of the Divine proportion AC.
The balance is in equilibrium. Find Z.
Gerry drove a total of 360 miles in 6 hours. How many miles did he drive in . . .
Gerry and Jane are exactly 100 km apart. Gerry leaves his place running at 10 . . .
If 300 people occupy 5/7 of the seats in a concert hall, how many people would . . .
Gerry walks half a distance at 4mph and runs back the other half faster. If . . .
When a glass is a quarter empty it contains 110 ml more than when it is a . . .
The occupancy percentage of a hotel is 64% for the four summer months and 46% . . .
Water increases its volume by 1/11 when freezing. By what part of its volume . . .
Two men and two women want to cross a river. The boat will only hold one man . . .
It takes two gardeners 6 days to mow a lawn. One is lazy and one is . . .
The stand-in mathematics teacher is forced to choose two students to go on a . . .
Derek dragon became a vegetarian two years ago. Derek likes to eat 3 baskets . . .
I participate in a 10-day rally. The rear tires of my car wear out after 4,000 . . .
Jane sets off from home to Boston at 50 miles per hour (mph). Gerry sets off . . .
Jane drinks only 2% fat milk. There are only 4% fat milk and 1% fat milk in a . . .
Mrs. Johnson has a large piece of land (pictured here). She divided the land . . .
How many pieces do you form with 6 cuts of a pizza? All cuts go through the . . .
How many bricks are needed to build these walls?
Which figure can form a cube when folded on the dotted lines without . . .
A wooden cube measures 10 cm on an edge. What is the greatest number of . . .
Anna wraps ribbon around a present. She also needs 34 more centimeters (cm) of . . .
What is the maximum number of boxes measuring 0.3m x 0.2m x 1m that can be . . .
Which angle is largest?
Which drawing represents the top view of this figure?
A 7x7x7cube is painted, and then cut into 1x1x1 cubes. How many of the cubes . . .
A cross-shaped lawn has a 1-meter wide path that surrounds it. Each side of . . .
What is the shortest path?
John is building a flight of stairs. Each stair is the same size. What is . . .
A wheel with a red mark on it is rolled along a straight line. What is the . . .
I want to build a fence around a rectangular garden. The garden has an area . . .
The Earth's diameter is 12,700 km. The horizon is 11 km from the top of a . . .
Four towns are situated at the corners of a square. The government decided to . . .
A mathematician wants to approximate the width of a lake. He places 5 markers . . .
A square garden is 401 square meters. The minimum distance between apple . . .
A boy is making boxes from cardboard. He is going to cut square pieces off . . .
Five boys Andrew, Brandon, Chris, Daniel, and Ethan live on State Street. At . . .
The American flag consists of thirteen equally spaced, horizontal red and white . . .
A wire is wound around a circular rod. The wire goes exactly 5 times around . . .
The three circles have fixed centers, and the diameter of a circle is 10% less . . .
A gardener has to reach the island in the middle of a pond without getting wet. . . .
Bill mows the front lawn, which is a 7m by 10m rectangle. The mower cuts a 1m . . .
A telephone company places round cables in round ducts. What arrangement of . . .
How much wrapping paper is needed to entirely cover a box that is 40 cm by 30 . . .
If I tile a floor with 3000 regular hexagonal tiles as shown here how many . . .
What is the greatest number of possible points of intersection of four . . .
The smallest apple weighs 100 grams. The largest apple has a perimeter 10% . . .
I placed together four identical triangles and the square, without overlaps, to . . .
John cuts a large piece of cheese into small pieces using straight cuts from a . . .
A net can be folded into a cube. Which of the faces is opposite the face . . .
Anna takes a rope that is 16 meters long and creates a square. Bob takes the . . .
The picture shows a tiling pattern which is made of square green tiles 10 x 10 . . .
Small blue squares have the same size. What share of the large square is . . .
The line is 0.25 millimeters thick and 8 kilometers long. What area does the . . .
Fifteen billiard balls perfectly fit into a triangular rack. What is the . . .
The diagram shows my square pond with a tree in each corner. How much can I . . .
It costs $24 to paint a cube. Before painting, it was cut into eight cubes. . . .
The area of the white cross is 20% of the area of the square flag. Five white . . .
A honey bee is walking from point A to point B along the indicated path. If . . .
Alex is framing a small flower box by four rectangular bricks. Each of the . . .
An ant goes from point A to point B along the indicated path. How many times . . .
A guard walks completely around the walls of a rectangular castle with a . . .
I blew some air into a spherical balloon and quadrupled its surface area (4 . . .
Eight poles are evenly spaced on the circumference of a big circle. What is . . .
What is the angle between the hour hand and the minute hand at 14:20?
ISO (World Standard) drawing sizes are 841 x 1189 millimeters for A0 paper . . .
Guesstimation. How many tennis balls can fit in a school bus?
The circles are equally spaced. Find 2 regions of equal area. One of them is . . .
Find the perimeter of a square that consists of two rectangles with perimeters . . .
Mrs. Johnson has a large piece of land (pictured here). She divided the land . . .
How many pieces do you form with five cuts of a pizza? All cuts go through . . .
Which has the largest area?
Anna wraps ribbon around a present. She also needs 32 more centimeters (cm) of . . .
What is the longest path?
A boy is making boxes from cardboard. He is going to cut square pieces off . . .
The American flag consists of thirteen equally spaced, horizontal red and white . . .
The three circles have fixed centers, and the diameter of a circle is 7 / 8 of . . .
A telephone company places round cables in round ducts. What position of the cables is the . . .
Anna takes a rope that is 24 ft long and creates a square. Bob takes the rope . . .
Two towers have the same height. Find the ratio of the width to the height . . .
If the area of the square is B and the area of the circle is C, what is the . . .
The figure shows a vertical cross-section of a road. Which part of the road . . .
How many different heights can you build up with 2 bricks, each measuring 30 x . . .
A recipe makes 5 pizzas that are 12 inches in diameter. If I decide to make . . .
An aquarium has a water surface area of 10,000 cm
2
. I put a brick . . .
What is the area of a garden?
The large and small circles touch each other. What part of the large circle . . .
All three pathways consist of semi-circles. Which pathway from A to B is the . . .
A piece of wire 75 cm in length is cut into two parts, one of them being 30 cm . . .
Estimate how long the rope is if its diameter is 1 cm.
A helicopter takes me from Lausanne, Switzerland to the Swiss capital Bern in . . .
What is the probability of breaking a stick into three pieces and forming a . . .
I want to cut the cross by two straight cuts to make the greatest number of . . .
A rectangular yard with an area of 24 m
2
has sides in the ratio 2:3. . . .
Which is a better fit? The smaller the percentage of the ‘area left over,’ . . .
You have a 5kg weight and a 12kg weight. They are the same height and are . . .
What is the total displacement of a boy who walks 1 block north, 2 blocks east, . . .
The golden border of the hexagonal brooch with maximum size 60 mm includes a . . .
If I use 30 g of batter to make a crêpe of 30 cm in diameter, how much batter . . .
How many beads can Jane add to the bracelet?
I divided a 3 x 4 square into 6 squares. What is the smallest number of . . .
What is the smallest area of a rectangle which includes all five squares?
What is the volume in cubic inches of the pyramid with height 10 inches? The . . .
A wooden empty box weighs 80 pounds. How much will another box of the same . . .
The picture shows a large cube 4 x 4 x 4 that was assembled from one-unit . . .
James the Mathematician just measured the angle of his piece of pizza, which is . . .
I spent 10 minutes to paint the upper part of the shape in blue. How much . . .
John cuts a large piece of cheese into small pieces using straight cuts from a . . .
What is the side view of the three-dimensional object?
Gerry has 24 meters of fence and wants to make a rectangular garden with the . . .
Find X.
Dr Heidi has been called in as an expert to solve a problem. There is a device . . .
Take two sheets of A4 paper (210 x 297 millimeters or 8.3 x 11.7 inch). Roll . . .
I want to wrap 30 wooden cubes. Which packaging uses the least package?
There are two paths in a rectangular garden. Find the length of the shorter . . .
A shop owner installs a security camera on the ceiling of his shop. The camera . . .
This stairway is 3 steps high. How many bricks would be needed to make the . . .
A stick of butter weighs 1 kilogram (1000 grams). Jane cuts it in half. . . .
Mark tosses a dime three times in a row. The tree diagram shows all possible . . .
Thirty-three apples, or 11% of the total, were not sold. How many apples . . .
The US Census Bureau stated that 6,830,000,000 people lived in an area of . . .
Tim received the following scores in the online math tests: 80%, 81%, 82%, . . .
A week ago, Anna's jar was filled with 100 jellybeans. She always took the . . .
A catering company places 14 people around six tables. What is the minimum . . .
The slice that has been eaten had 11 mushrooms on it. What is the estimated . . .
In a class, 90% of the students earned A-grades on the first test, 80% earned . . .
A city hall contains 165 chairs. The first row has 10 chairs. Each additional . . .
John has an average of 89 on his three math exams. To earn an A, he must have . . .
How many different 7-digit phone numbers can be used by a phone company? The . . .
As each of five eggs is weighed, the average weight increases by one gram each . . .
John earned an average of 80% on his five exams. What is the lowest possible . . .
In a game, you have a 1/5 probability of winning $100 and 4/5 probability of . . .
Two princes and two princesses are ready to marry. Everybody independently . . .
A pass code must comprise four different numbers from 0 to 9. How many . . .
Dueling Idiots Problem: three idiots participate in a duel. They shoot at the . . .
John answered 100 4-option multiple-choice questions. He is sure that he . . .
There are five traffic lights on River Avenue. In how many ways can the . . .
San Jose Scrabblereg; Club No. 21 published a three-letter word list that . . .
Three apples were weighed in pairs and the weights were 200, 204, and 208 . . .
The Venn diagram shows the result of a survey of 80 clients. It indicates the . . .
John sent an email to his three partners. Everybody answered and copied the . . .
A venture capitalist has choosen to invest in only one of three start-up . . .
How many times heavier than a rabbit is an elephant?
What is the probability that two dominoes drawn randomly from a standard set . . .
Bob shaves himself 4 minutes per day. If he lives 70 years, what is the . . .
There are 10 green and 10 red jellybeans in a jar. If I randomly remove 2 . . .
The national debt of a country is $16.5 trillions. It has a population of 300 . . .
We cut a 1800 gram stick of butter in half. We then cut one of the halves . . .
Thirty-three apples, or 66% of the total, were not sold. How many apples . . .
Tim received the following scores in the online math tests: 80%, 81%, 82%, . . .
A week ago, Anna's jar was filled with 120 jellybeans. She always took the . . .
The slice that has been eaten had 7 mushrooms on it. What is the estimated . . .
The slice that has been eaten had 16 mushrooms on it. What is the estimated . . .
In a class, 95% of the students earned A grades on the first test, 90% earned A . . .
John has an average of 87 on his two math exams. To earn an A, he must have a . . .
As each of five eggs is weighed, the average weight increases by two grams each . . .
John earned an average of 90% on his five exams. What is the lowest possible . . .
Jane and Gerry visit a casino. In one game, they have a 1/5 probability of . . .
John answered 100 4-option multiple-choice questions. He is sure that he . . .
There are six traffic lights on Speedup Avenue. In how many ways can the . . .
Three apples were weighed in pairs and the weights were 200, 212, and 224 . . .
John sent an email to his three partners. Everybody answered and copied the . . .
An average baby is about 20 inches (51 cm) long and weighs approximately 6 to 9 . . .
Bob shaves himself 3 minutes every day including the weekends. If he starts . . .
Two friends and I have gone out to dinner. The bill comes to $150.00. . . .
The diagram shows my Saturday morning activities. If I rearrange the . . .
Alex possesses 52% of a business and the rest belongs to Bill. They take . . .
Guesstimation A man can jump up to four times the length of his own body. . . .
Alex must match three different numbers chosen from the integers 1 to 33 in any . . .
A player must match three different numbers chosen from the integers 1 to 30 . . .
The picture shows a subway map. If it takes 3 minutes to go from one station . . .
In the United States, the average life span is 65 years and the average female . . .
In a country, a baby is born every 5 seconds, a person dies every 45 seconds, . . .
What was the balance in Bob's bank account on May 18?
Gerry sent three letters to three girlfriends. The postman put the letters . . .
Maria answered 22 of the 25 questions on her test. Half of them, she did . . .
The map shows a toll road network with the prices for each part of the road. . . .
Anna and Bill roll a six-sided die. The first person to roll a six wins. Anna . . .
John and Mary have equal chances of winning. What is more probable?
Estimate the total you pay if the meal costs $29, the tax is 5%, and the tip is . . .
After a 20% discount and 8% tax, a set of tin solders costs $540. What was . . .
Every day, a stock price of $444 is either increased or decreased by 4%. When . . .
Seven soldiers have lined up in order of height, tallest to shortest. They . . .
I shoot arrows at the target. When I miss the target, I get zero points. I . . .
Estimate the probability that no two of four sisters were born in the same day . . .
Would you rather sit in a traffic jam for . . .
John and Mary borrow $3,000 to pay for new furniture. They will pay back the . . .
Anna spent 120 Swiss francs in a Swiss souvenir shop. She was charged an extra . . .
My car can travel 20 km on one liter of gas on the motorway and 12 km on one . . .
If Anna continues stringing the beads in the same manner as it is shown on the . . .
What is the probability of not getting blue in two runs?
If the first President of the USA George Washington took office in 1789 and the . . .
Javier Sotomayor (Cuba) is the men's record holder with a jump of 2.45 m set . . .
Anna, Brice, Cindy, and Dan each have the same number of buttons. Who has more . . .
John's family tree includes 10 generations. What is the minimum number of . . .
Veryfast Airlines loses 20% of the luggage. Gerry puts his three favorite toys . . .
According to Wikipedia Mrs. Vassilyeva holds the record for most children: she . . .
A line containing 9 keyboard letters on Gerry's laptop does not work. If his . . .
In which word below is the percentage of vowels the smallest?
Estimate the number of keys on the keyboard.
How many minutes have already passed today?
A ball rebounds half of the height from which it is dropped in a sport hall. . . .
If the ratio of men to women in a company is 5 : 7, which of the following . . .
Jane wants to make different bracelets. Which bracelets are the same?
How many steps are there in the shortest path from A to N?
What time is it 1234 minutes after 1:23 a.m.?
Steve wonders "Why don’t I have a girlfriend?" He uses the following . . .
Gerry's income is seven-eighths that of Jane. Gerry's expenses are . . .
The masses of sugar and water in my 200 g tea cup are in the ratio 1 : 9. If . . .
What is 1% of 10% of 100% of $1,000?
The cost of living increased in the first year and it decreased in the second . . .
If I roll two dice, what is the probability of rolling a six on at least one of . . .
You have more shoes than an average child in your country. This statement is . . .
A survey shows that 85% of the population of a country speak English, 75% of . . .
There is a 6% sales tax in a state. How much tax did I pay for a car, if the . . .
In how many ways can Jane put two eggs of different color into the package?
I put red and white chocolate candies into a bag. I randomly took 2 candies, . . .
Buy 2 for the price of 3 and get 50% off!
What is the final rebate do . . .
Jane and Gerry work at a call center selling worthless rubbish to unsuspecting . . .
Leslie Green asks: Criminal gangs have been known to pay vagrants to search . . .
Leslie Green asks: quot;Henrietta is threading the last bead onto a necklace . . .
Gerry tosses a coin and Jane tosses 2 coins. What is the probability that . . .
Jane and Gerry compete in a best-of-three match. If Gerry plays so that his . . .
There are 9 houses on a street. The distance between any two adjacent houses is . . .
Cletus is absolutely, definitely, the worst student the driving school has ever . . .
Three brothers share their father's sheep. Father said that the second son . . .
Martin has ten thousand dollars in the Mad Money's bank account. The interest . . .
Jane has a 5-liter bucket with 5%-fat milk and 3-liter bucket with 3%-fat . . .
Jake, being bored on a rainy Sunday afternoon, throws a pair of dice 500 times . . .
Christmas is getting near, and a four person company wants to run a Secret . . .
Jane has forgotten the address of her friend’s house, but knows it contains the . . .
Lottery 6-digit numbers are from 000001 to 999999. A ticket is considered to . . .
What are the odds of getting at least two tails in a row if you flip a dime . . .
Which of the following is closest to 1234567 x 7654321
Sixteen teams enter a hockey tournament. If there can be no draws, how many . . .
John has two parents and four grandparents. How many ancestors did he have . . .
A river boat travels 2 km in 12 minutes with the current and 1 km in 18 minutes . . .
A melon slice weighs 5kg, and 95% of the weight is from water. After lying in . . .
John packs 10 CDs in a box. If he has 123 CDs of one type, and 45 of . . .
Which statement is NOT correct?
Pipe 1 can empty a full tank in 1 hour. Pipe 2 can empty the tank in 2 hours. . . .
The number of strawberry cones sold at an ice cream store was 1 more than 3 . . .
Water flows through two pipes from F to G. As shown, there are four taps, A, . . .
A password consists of three digits, from 0 to 9, followed by a capital letter . . .
A lady always arrives at the train station at exactly six o'clock to pick up . . .
Three referees A, B and C are at the corners of a rectangular field. At . . .
Many people stand in a line (queue) to buy tickets to a match. There are . . .
A password consists of four digits and the repetition of digits is allowed. . . .
Sixteen European teams enter a football tournament. Each team plays one . . .
Jane and Gerry are playing a card game. Without looking, a card is drawn from . . .
The left 11-tooth gear turns at 124 revolutions per minute. The middle gear . . .
How many years ago did you have more than one thousand ancestors? Assume . . .
Here, a password consists of four digits, 0-9. How many passwords are there . . .
I don't quite remember my five-digit password. The first and last digits are . . .
Yellow Taxi Service charges $1.20 for the first mile and $.79 for each . . .
Anna traveled 3600km in a car. She had six tires and changed them such that . . .
There are 72 rabbits in Funnytown. The population of rabbits in Funnytown . . .
Anna bought 1 slice of mushroom pizza and 2 slices of cheese pizza for a total . . .
Bill buys oranges at five for $1 and sells at one for $5. How many oranges . . .
I have apples and paper boxes. If I place 8 apples into each box, I will have . . .
It takes six people 48 hours to paint a house. How long would it take to . . .
Swiss trains leave from Zurich for Geneva every hour. The trip takes three . . .
A cube consists of small black and white cubes. Two small cubes of the same . . .
How many ways can one travel from point H to point F if moving north and west . . .
It usually takes a man several hours to walk from a railway station to his . . .
The weight limit for an elevator is 800kg. Which statement is absolutely . . .
I have a collection of 44 songs that are each 4 minutes in length and 55 songs . . .
I can buy Swiss cheese in boxes of 250 grams, 450 grams, 650 grams, and 850 . . .
A 200-dollar stock loses $40 of its value for a week. What percent of . . .
Every year on my son's birthday, I put multiples of one thousand dollars in his . . .
What is the largest possible number of pieces you can produce if you cut a . . .
Which is the single discount that is the same as three successive discounts of . . .
Construction work commenced on both sides of a 450 meter tunnel. If a . . .
Bryan went for a haircut yesterday. He has 120000 strands of hair and it took . . .
The Ancient Olympic Games were held every four years. They already existed at . . .
The figure shows the number of people required for the activities of a project . . .
A company initially planned for sixty people to complete a project in 100 days. . . .
John is going to repair his house. There are three major activities: . . .
A project manager has to determine whether to purchase or rent four cars for a . . .
You are shrunk so that your height is equal to the diameter of a dime (a . . .
Thirty-two teams enter a hockey tournament. If there can be no draws, how . . .
John has two parents and four grandparents. How many ancestors did he have . . .
A river boat travels 4 km in 10 minutes with the current and 1 km in 15 minutes . . .
A melon slice weighs 5kg, and 96% of the weight is from water. After lying in . . .
A melon slice weighs 5kg, and 90% of the weight is from water. After lying in . . .
A melon slice weighs 5kg, and 92% of the weight is from water. After lying in . . .
Which statement is NOT correct?
Pipe 1 can empty a full tank in 1 hour. Pipe 2 can empty the tank in 2 hours. . . .
The number of strawberry cones sold at an ice cream store was 1 more than 3 . . .
Water flows through two pipes from F to G. As shown, there are four taps, A, . . .
A password consists of three digits, from 0 to 9, followed by a digit or a . . .
Many people stand in a line (queue) to buy tickets to a match. There are . . .
A password consists of four digits and the repetition of digits is not allowed. . . .
How many years ago did you have more than four thousand ancestors? Assume . . .
Here, a password consists of four capital letters from A to Z. How many . . .
Yellow Taxi Service charges $1.50 for the first mile and $.78 for each . . .
Anna traveled 3600 miles in a car. She had five tires and changed them such . . .
There are 100 rabbits in Funnytown. The population of rabbits in Funnytown . . .
Anna bought 1 slice of mushroom pizza and 2 slices of cheese pizza for a total . . .
Bill buys oranges at five for $1 and sells at one for $5. How many oranges . . .
It takes six people 36 hours to paint a house. How long would it take to . . .
Swiss trains leave from Zurich for Geneva every hour. The trip takes three . . .
A cube consists of small black and white cubes. Two small cubes of the same . . .
A 300-dollar stock loses $50 of its value for a week. What percent of . . .
You have a part of a black-and-white map of a reef coast. You are at point A . . .
Anna, Beatrice, and Cindy run a 1000-meter race. All of them run at a . . .
I drive to my country house at a constant speed of 100 miles/hour. I . . .
Brett, Cindy, and Daniel each launch a 100-day project. On day 100, Brett . . .
Benny Bunny starts jumping from a hole. It takes six seconds for every 10 . . .
I ride along a long valley by bus and walk back. The bus speed is 10 miles per . . .
A shopkeeper buys two kinds of cacao beans at $64 and $96 a bag. He mixes the . . .
Each of the 20 Knights of the Round Table clinked his mug with the Knights on . . .
There were nine knights in a kingdom and enough hay to feed their horses for . . .
Everything is half price in a restaurant. Even more, each pizza receives an N% . . .
Bob earns $48,000 per year and has two weeks of paid vacation. He works five . . .
A boat can hold a maximum of two people. The width of a lake is about 200 . . .
A car weighs 988kg when empty and 1224kg when John, his sister Jane, and their . . .
Anna has 7 biscuits, Bill has 4, and Cindy has 1. They share them out equally. . . .
A series of 10 books were published at one-year intervals. The sum of the . . .
How many "yes or no" questions are needed to guess any 3-digit lock code?
Mr. Rapid always starts driving on a road at exactly 7:00 a.m. If he drives on . . .
Working alone, Mr. Smith earns the family's monthly budget in 40 calendar days. . . .
There are 123 part-time employees and 321 full-time employees in a company. . . .
What would you choose if you were hungry?
There are four new projects in a company. The sums of the budgets of three of . . .
Mary can complete an activity in 40 days. John can complete the activity in 50 . . .
A swimming school costs $129 a month, but costs $1,390 annually if you pay the . . .
A math teacher usually has 21 students in her class. Anna, Bill, and Craig are . . .
A rich man is saving for a new car. He sets up an automatic transfer of $1000 . . .
A 44-month long project is divided into three consecutive activities. The . . .
Jim can eat a 15-inch pizza in half an hour. How long will it take for Jim to . . .
The price of a computer after discount was $992. If the discount was 20%, . . .
I bought 3 ice-creams. I gave the cashier $20 and got $9.50 change. What is . . .
Sixteen teams enter a football tournament. Each team plays one match against . . .
A man and his beloved wife carry a 20kg basket. If the lady carries only 8kg, . . .
A leading supplier left a solar plant project seven months after the project . . .
John and Mary, whose average annual income is $110,000, have just moved from . . .
In a test of 50 questions, the final score is calculated by subtracting three . . .
What is the total surface area of 28 identical cubes which together have a . . .
A hockey league consists of 6 teams, with 100 players in total. Each team has . . .
Gerry drove 210 miles from home to his college and used 14 gallons of gasoline. . . .
Greg takes 100-point tests. He wants to achieve an average grade of at least . . .
If each coconut is priced at $9, then the shopkeeper loses $11. If each . . .
It takes 30 seconds to cut the woodblock into three pieces. How much time . . .
I composed the numbers from strips of paper. Find the odd one out.
Two successive increases of 25% and 25% are followed by two successive . . .
After an hour, Evguenia catches and frees 10 fish. If there are 100 fish in a . . .
How many days does Bob work every year if he does not work on weekends and has . . .
How many days does Bob work in 40 years of his career if he does not work on . . .
Gerry lives 50 miles away from Jane. He drives to Jane's house at 60 miles . . .
What is the word coiled inside this circle?
Gerry bought 3 oranges and 8 apples for $5. The next week he bought 8 oranges . . .
In a basketball tournament, there are 7 teams. Each of the teams plays two . . .
In a village, there are 100 families with either one child or none. This is a . . .
How many students are there in Evguenia's class, if 5% of the students have . . .
A $1 bill measures 156 mm long and weighs approximately 1 gram. How much . . .
If half of five pizzas costs $30, what would a third of eight cost?
We need 200 tons of such stones to pave a city square. How much stone do we . . .
Today Jane worked 3 hours at the rate of $9.90 per hour. How much did she . . .
This year, in what month does the 111
th
day occur?
Andrew called all the girls in his class. He called three of them twice, and . . .
How much are 33 cacao bags (of 44kg each) worth, if 10kg costs $55?
Gerry won 30% of the first 40% of the annual Discus Throw competitions. What . . .
In a pizzeria, you pay $7 for each of the first three pizzas, and $6 for the . . .
A grocery store lowered the price of coconuts from 49 cents to 48 cents. For . . .
Which of these is the longest time?
A third of 8 is $4. Based on that proportion, what is one-fifth of 6?
I choose a cube, which is third from the left, fourth from the right, fifth . . .
What team do you join to get the greater amount of melon?
Jane lives exactly in the middle on a short street. How many houses are there . . .
Four sisters are all 2 years apart in age and the youngest is 4 years old. . . .
Jane and Kate are ski racing. They both start at the same place, at the same . . .
I can cut off 4 circles from a circular sheet of dough. I use the left-overs . . .
Leslie Green asks: I am allergic to washing powder, but I don’t want my . . .
Sammy the sea lion has spotted a gorgeous Lady sea lion before anyone else. She . . .
Evguenia's birthday parties are always the same, and always boring. She gets . . .
Bob works for 40 years. He does not work on weekends, has a 3-week summer . . .
Leslie Green tells a story and asks : It has been several years since the . . .
Leslie Green asks: quot;The more debt you get into, the more credit card . . .
Stephen Stead asks: quot;My car uses 10 liters / 100 km and has a 70-liter . . .
Leslie Green asks: It is difficult to see a 2% price difference between food . . .
Leslie Green asks Some forms of loans are more
iniquitous
than . . .
Three observers, not more than 1km apart on flat windless terrain, report the . . .
Most solids expand when heated and contract when cooled. Does a hole in a . . .
Leslie Green asks: quot;Consider which would hurt less if it was . . .
In a particular city it is illegal for those aged over 18 to consume children's . . .
There are three goddesses named Mendax, Fidelis and Furtibus; one on your left, . . .
Would you rather work five days at $120 per day or be paid $20 the first day . . .
Gerry bought Benny Bunny for $9, sold it for $10, bought it back for $11, then . . .
There is a fault with the cruise control on Hank's car such that the speed . . .
The ratio of women to men at a 100-employee company is 1 : 4. The company . . .
Jane races on a circular track. Her bicycle tire has a circumference of 1.5 . . .
The unit price of a thingamajig is $3.50. If I buy 10, the unit price drops . . .
The chocolate biscuit factory you are now in charge of has a problem. There are . . .
Gerry drives to his work 4 days per week and his office is 10 miles away from . . .
A shopkeeper purchased 300 bulbs for $0.95 each. However, every . . .
You are pitching your new idea to a panel of Venture Capitalists (VCs) to . . .
Gerry writes 1. He either adds or multiplies it by the next integer number. He . . .
The playing cards shown need to be sorted into increasing order with the lowest . . .
If Edgar cleans his teeth twice per week and changes the toothbrush every time . . .
I am listening to a 1-hour audiobook. If I play the same audiobook at 1.25x . . .
On every even-numbered day, John eats 2 pears. He eats 3 apples on every . . .
There’s a tennis tournament with one hundred players. How many matches does . . .
The wages of 8 workers for a five-day week is $ 6,000. What are the one day’s . . .
Jane has 34 apples. Two apples can be traded for 1 mango, and each mango can be . . .
A farmer bought 3 cows for $3000 and sold them for $4000. He bought them . . .
A team has $90.00 to buy balls. One ball costs $7. The team gets every fifth . . .
Which is the best estimate of the total cost of these toys?
We want to buy 120 kilograms of potatoes. Which is the better purchase?
At 11:30 A.M. Alex started painting a fence. By noon, he had painted this . . .
Ben's grandmother asked him to go to the store to buy at least 1000 grams of . . .
Ten percent of a $32.00 electricity bill is tax. How much is the tax?
A dozen balloons cost 48 cents. How many balloons cost 1 dollar?
A farmer normally sells sheep for $200 each. This winter, the farmer is . . .
John is making a rectangular flower box. He is using wood that is 10 . . .
To complete one set of pipe installations, Bob the plumber needs the following . . .
There are 12 men on a basketball team, and in a game 5 of them play at any one . . .
John started a business in which he earned $1 on the first day, $5 on the . . .
Americans measure the temperature in
o
F. Europeans measure the . . .
Jim bought a laptop at 25% off the regular price of $500.00. He also bought a . . .
The drama club is selling tickets to a play for $8 per ticket. The cost to . . .
A particular stock is valued at $40 per share. The value increases by 25% and . . .
Which coupon should Bob use to save the most money on 2 hammers originally . . .
Three friends visited a restaurant where everything costs $0.50. They ordered . . .
Sixty carpenters and forty plumbers work together. The average daily rate of a . . .
Apples are sold in bags of four that cost $5 per bag, or bags of six that cost . . .
John buys shares in the stock market for $1000. He sells the shares when the . . .
A car that originally sold for $40,000 depreciates at a rate of 50% per year. . . .
It costs $24 to paint a cube. Before painting, we divide the cube into two . . .
The original price of an umbrella was $16. What was the price of the umbrella . . .
500 employees work for company XYZ, where the ratio of men to women is 6 to 4. . . .
Anna is a member of Greenland Velo's race team. This summer, she has won only . . .
A 2-meter wide path is constructed around the outside of a rectangular garden . . .
A lottery has one $8000 prize, two $2000 prizes, and twelve $500 prizes. The . . .
John put $10,000.00 in a savings account at an annual interest rate of 4%. He . . .
In 2000, the population of a small town was 10,000 residents. If the annual . . .
Which of the following could be indicative of a successful business?
In a basketball tournament, a team must be defeated twice to be eliminated. . . .
John works 4-hour shifts at a call center. He earns $4 per hour and $4 per . . .
Tom is choosing between two brands of AA batteries for his pocket flashlight. A . . .
A taxi company charges $1.75 for the first kilometer and 25 cents for each . . .
Jim sells 80 percent of pineapples he had and throws away 10 percent of the . . .
If eight deciliters of Swiss apple juice, priced at $4.00 per liter, are . . .
A space rocket has a critical fuel-control system protected by 4 fuel . . .
Jane wants to buy a car. The fuel efficiency is two times more important to . . .
Bob is looking for a new job. He has three offers with the same starting . . .
Bob will work 5 days. Which payment plan should he choose?
A bicyclist pedals downhill at 20 km/h (kilometers per hour) and uphill at 10 . . .
If you would like to give a tip of 15% and you have no change, without using a . . .
A restaurant sells a 30 cm (in diameter) pizza for $9, while their large 40 cm . . .
The picture shows four supermarket lines, viewed from above. The numbers are . . .
The space between these green square tiles is filled by grout. Its width is . . .
January 1st, 2012 was a Sunday. 2012 is a leap year and therefore contains one . . .
The cross-section of the identical arc stones is a trapezoid with three equal . . .
The traveling salesman problem: a salesman has to visit eight towns and return . . .
The Chinese postman problem: a postman wants to travel along each road in his . . .
The diagram shows a road network. All cars drive in one direction from A to B. . . .
I would like to rearrange the items in the six bins shown on the right to . . .
I want to build a fence around a garden. The perimeter of the garden is 12 . . .
I use a room that is 7 x 11 to arrange five boxes. I would like to move the . . .
I placed seven balls into a square box. Is it possible to rearrange the balls . . .
How many chain links do I need to produce a 2.4-meter chain? All sizes are . . .
Which spring wire is longest?
To paint four solid white lines and two dashed white lines costs $999.00 per 1 . . .
Benny Bunny starts jumping from a hole. Every leap is two times longer than . . .
Two cyclists race on a circular track. The first can ride around the track in . . .
Yesterday, I caught 30 fish of a certain size in a pond. I marked and . . .
Estimate the area of the lake shown on the right.
If 10% of the people get 90% of the total salary paid in a county, and the . . .
In a casino on a Sunday, 90% of the visitors lost $100 each, 9% of the . . .
Which of the following collections of round pizzas has the largest area?
A chain with 3 links is 10 cm long. A chain made from 5 links of the same . . .
John deposited 400 dollars at 40% interest compounded annually. Estimate his . . .
All sizes can be 1% bigger or smaller compared with the initial design sizes. . . .
A gardener increased the length of his rectangle-shaped garden by 10% and kept . . .
Bob is paid $5,000 a month for his regular job. During Summer holidays, he . . .
Anna can complete a project in 40 days. Bill can complete the project in 50 . . .
John works on a 12-month project. Forty percent of the first 3-month activity . . .
Choose the best advice for a strategic decision to the top management of a . . .
A project manager needs a car 3 days per week. The daily cost of car renting . . .
I can buy gold bars in boxes of 25 kilograms, 45 kilograms, 65 kilograms, and . . .
The business of company A is 10% greater than the business of company B now. . . .
The average hourly wages of men and women in company A are $21 and $16, . . .
In a survey of customers, 2/3 of the female clients and 3/4 of the male clients . . .
In an investment club, 90% of the members bought stock in company A, 80% . . .
John is going to repair his house. There are three major activities: . . .
The picture shows a simplified statement of income for company ABC in million. . . .
I bought a 20'' laptop with the ratio of the screen width to the height 4 : 3. . . .
A goldfish needs 1000 cubic inches of water to live in. An aquarium is 20 . . .
A hammer and a nail cost $21. If the hammer cost $20 more than the nail, how . . .
A peasant bought a cow for $3000 and sold her for $4000. He bought her back . . .
A farmer bought 3 cows for $3600 and sold them for $4000. He bought them . . .
A farmer bought 3 cows for $3000 and sold them for $3500. He bought them . . .
A farmer bought 3 cows for $3300 and sold them for $3500. He bought them . . .
A team has $100. One ball costs $8. The team gets every sixth ball for free. . . .
A team has $96. One ball costs $9. The team gets every sixth ball for free. . . .
Which is the best estimate of the total cost of the two most expensive toys?
We want to buy 120 kilograms of potatoes. Which is the better purchase?
At 11:20 A.M. Alex started painting a fence. By noon, he had painted this . . .
At 11:00 A.M. Alex started painting a fence. By noon, he had painted this . . .
Find a set with the best value (weight) for money.
I paid a total of $121 for a toy train, including 10% tax. How much does the . . .
A dozen balloons cost 60 cents. How many balloons cost 1 dollar?
A dozen balloons cost 30 cents. How many balloons cost 1 dollar?
A farmer normally sells sheep for $200 each. This winter, the farmer is . . .
John is making a rectangular flower box. He is using wood that is 10 . . .
To complete one set of pipe installations, Bob the plumber needs the following . . .
There are 15 men on a basketball team, and in a game 5 of them play at any one . . .
There are 16 men on a basketball team, and in a game 5 of them play at any one . . .
John started a business in which he earned $1 on the first day, $4 on the . . .
Americans measure the temperature in
o
F. Europeans measure the . . .
Jim bought a laptop at 25% off the regular price of $500.00. He also bought a . . .
The drama club is selling tickets to a play for $9 per ticket. The cost to . . .
The drama club is selling tickets to a play for $9 per ticket. The cost to . . .
A particular stock is valued at $40 per share. The value increases by 25% and . . .
Three friends visited a restaurant where everything costs $0.50. They ordered . . .
Sixty carpenters and forty plumbers work together. The average daily rate of a . . .
Apples are sold in bags of four that cost $5 per bag, or bags of six that cost . . .
John buys shares in the stock market for $1000. He sells the shares when the . . .
A car that originally sold for $40,000 depreciates at a rate of 50% per year. . . .
It costs $27 to paint a cube. Before painting, we divide the cube into two . . .
The original price of an umbrella was $15. What was the price of the umbrella . . .
600 employees work for company XYZ, where the ratio of men to women is 7 to 5. . . .
Anna is a member of Greenland Velo's race team. This summer, she has won only . . .
A lottery has one $8000 prize, four $2000 prizes, and eight $500 prizes. The . . .
John put $10,000.00 in a savings account at an annual interest rate of 5%. He . . .
In a basketball tournament, a team is eliminated after a defeat. There can be . . .
John works 5-hour shifts at a call center. He earns $5 per hour and $5 per . . .
A taxi company charges $1.95 for the first mile and 50 cents for each . . .
Jim sells 60 percent of pineapples he had and throws away 10 percent of the . . .
A space rocket has a critical fuel system, protected by 4 independent safety . . .
Bob will work 5 days. Which payment plan should he choose?
A bicyclist pedals downhill at 25 km/h (kilometers per hour) and uphill at 10 . . .
The desired tip is 15% and you have no change. Without using a calculator, . . .
A restaurant sells a 30 cm (in diameter) pizza for $9, while their large 40 cm . . .
Estimate the average width of the lake shown on the right.
If 5% of the people get 95% of the total salary paid in a county, and the . . .
In a casino on a Sunday, 90% of the visitors lost $200 each, 9% of the . . .
Anna can complete a project in 40 days. Bill can complete the project in 50 . . .
In a survey of customers, 2/3 of the female clients and 3/4 of the male clients . . .
The picture shows a simplified statement of income for company ABC in millions. . . .
I bought a 15''-screen laptop with a screen width to height ratio of 4 : 3. . . .
How many minutes before midnight does a 24-hour digital clock show the same . . .
I gave $120 to Brett, Cindy, and Daniel. Together Brett and Cindy received . . .
A piece of soap is 50x40x100 mm. A layer of 0.125 mm disappears every time I . . .
The diagram shows a road network. All cars drive in one direction from A to F. . . .
I saw the lightning strike the ground near the far side of the lake and heard a . . .
Andrew is expecting two important 10-minute phone calls today at a randomly . . .
Bill is going to visit his family in New York. He lives 105 miles away in . . .
To unlock his mobile device, Alex must enter the four different digits of his . . .
The speed of a bus is 25 miles per hour (mph) including stops and 40 mph . . .
Wikipedia says that the equator is about 40,075 kilometers (24,901 miles) long; . . .
Seven apricots were dried and no longer contain water. If the fruits . . .
How high is a $50,000 stack of $1 bills, given that the thickness of 100 bills . . .
Water weighs 1000kg per cubic meter at 4 degrees Celsius. Fresh snow that . . .
The picture shows the rectangular floor plan of the first level of a house. . . .
The picture shows the rectangular floor plan of the first level of a house. . . .
John and Mary have square tiles with sizes 2 cm by 2 cm, 4 cm by 4 cm, 6 cm by . . .
John and Mary have square tiles with sizes 5 cm by 5 cm, 10 cm by 10 cm, and 15 . . .
Which point cuts the rope into two equal parts?
A revolving door with three wings makes 5 complete rotations in a minute. . . .
In 2013, 87.5% of Swiss train passengers arrived at their destination with no . . .
The rear tires of my car wear out after 60,000 miles, whilst the front tires . . .
I saved $5 on buying coconuts on sale. If I spent $20 on the coconuts, what . . .
Two years ago, I bought a cottage for $800,000. I was short of money and . . .
Mrs. Brown bought 98 boxes of strawberries at $9 per box but 25 % of them were . . .
When I put 10 cubes of ice into my glass and they melt, the water doubles its . . .
Estimate how many symbols you can write on your body if one symbol requires one . . .
John buys a car, paying 20% in cash. The rest of the amount is paid by a . . .
You are driving your mother's car home. Make a deal!
John is the proud owner of a race car. In a month he uses 2 gallons, 3 . . .
Since the day he was born, Bill's parents have put $1000 in his bank account . . .
An automobile salesperson earns a 5% commission on all sales. How much will . . .
Mr. Smith bought glasses for all members of his family including animals and . . .
Items accepted by an airline must not be more than 3 x 4 x 12 ft long. What . . .
According to USDA's Economic Research the average American ate 2000 lbs of food . . .
I see the reflection of the mountain peak 10 meters from me. I know that the . . .
At the next stop, 3 students get off while 5 get on. If initially there were . . .
What is the minimum monthly salary you negotiate with your boss if you need . . .
What is the minimum number of pizzas that a class of 21 students should buy if . . .
How long do One Thousand and One Nights last? A Persian king, Shahryar, . . .
Tickets for a football game are available for $29 in advance or $39 if . . .
Americans measure the temperature in
o
F. Europeans measure the . . .
John's tent is 1.5 m high, 2 m long, and 1.5 m wide. How much water will fall . . .
The size of most credit cards is 85.60 x 53.98 mm ( 3 3/8 x 2 1/8 in ). . . .
The size of an NBA basketball court is about 29 by 16 meters. How many . . .
I require a passcode that uses 4 different numbers. I chose the shortest . . .
I require a passcode that uses 4 different numbers. I chose the largest . . .
John starts a taxi business and rents a car for $77 per day. The rent . . .
Gerry plans to swim a total of at least 1000 laps in January. He swims every . . .
Texas experiences wide temperature fluctuations within a single day. On . . .
James bought a new car for $30,000. Each year it depreciates (loses value) at . . .
While eating out Gerry and Jim together tipped their server $7 in total. . . .
A very old car takes 2 hours 48 minutes to get to my granny's house, 84 km . . .
The population density of the Italian capital Rome is about 2,000 people per . . .
Each week, Mrs. Smith gives her students as many worksheets as their age. For . . .
Which number required the most paper?
The knights gallop 100 m in 10 seconds. There are 1000 m in 1 km. Would the . . .
Jane pedaled downhill at 20 km/h (kilometers per hour) and it took 2 hours to . . .
If a real estate agent received $60,000 as a 5% commission on the selling price . . .
How much paint do you need to paint the pyramid if you need 1kg for 1 square . . .
Two automobiles set off at the same time, one from Vevey and the other from . . .
A driver's eyes are about 1.3 m above the ground, while the hood is 2 m in . . .
The limousine service makes 100 trips Center-Aeroport every day, each of which . . .
How many minutes are left to midnight?
A pavement stone's side length is 9 cm and it weighs 20kg. How much stone do . . .
A district sends, on average, a total of 200 million gallons of water each . . .
A district sends, on average, a total of 205 million gallons of water each . . .
Gerry puts 1/10 of his weekly allowance in the bank for college. If he has . . .
How many revolutions did the Earth make around its axis in 20
th
. . .
Gerry and Jane were supposed to meet at 11:50. If Gerry arrived 12 minutes . . .
How many minutes elapse between 9:10 a.m. and 1:45 p.m. ?
How many dimes are worth 22 quarters? A quarter dollar, or quarter, is a U.S. . . .
A mile long train travels 2 miles a minute. How much time does it take for . . .
Gerry was born at 11:55 P.M. on December 31, 2000. Jane was born 6 minutes . . .
The community library fines 20 cents per overdue day of the first week and 50 . . .
Australia defeated American Samoa and set a world record for the largest . . .
There were 196 countries on the Earth in 2010. The 2-letter codes are . . .
Gerry adds $5 to his piggy bank every week. How much money will he get in . . .
Estimate how many cubes there are in the pyramid.
Anna (A), Bill (B), Cindy (C), and Daniel (D) work on a project. (1) . . .
Gerry arrived in the Murtenhof Hotel on January 28th in the afternoon and left . . .
There are 17 parallels and 12 meridians on a globe. Into how many areas is the . . .
When Pinocchio lies, his nose gets twice as long. When he tells the truth, his . . .
Estimate the volume of Bob if he weighs 100kg. 1kg = 2.2 pounds 1 liter . . .
A pedestrian crosswalk consists of black and white stripes each 0.4 m wide. . . .
Jane purchased a house for $ 400,000. She wants a Real Estate Agent to sell . . .
The diagram shows some of the results of a six-person contest. There are two . . .
I add blue blocks one by one on the top. Does the structure fail?
The picture shows a composite structure under stress. Estimate the percentage . . .
Use of composite materials decreases the weight of passenger airplanes. How . . .
There are cows and farmers in a field. If Gerry counts 22 heads and 66 legs, . . .
Computer Update Problem
suggested by Leslie Green I spot a computer . . .
Eugenia wants to make a simple bridge for her dog. Currently he has to run . . .
Now that I have made a vast fortune from my patented premium dog biscuits, I . . .
A plastic ruler is much easier to bend in one direction than another according . . .
Leslie Green asks: A road traffic junction has no provision for pedestrians. . . .
Modern petrol-electric hybrid cars typically have so many sensors that you can . . .
Leslie Green asks: Income tax is a strange concept when inflation is taken . . .
Leslie Green asks: My neighbor John has invented a perpetual motion machine. . . .
Leslie Green, Oxfordshire, UK, asks: quot;My neighbor a famous Professor of . . .
Leslie Green asks: quot;
Endocrinic Igorosis
is a horrible . . .
Leslie Green asks: quot;You accidentally knock an almost full opened can of . . .
There are two gods named Mendax and Fidelis, one on your left, the other on . . .
Leslie Green asks quot;Suppose a particular nuclear waste material has a . . .
An elephant weighing 2 tonnes (2 metric tons) and a rabbit weighing 1kg are . . .
There is a fault with the cruise control on Hank's car such that the speed . . .
Gerry promises to be at Jane's house at 19:00. If he bikes at 15mph, he . . .
Gerry has $30 in pennies, nickels, dimes, and quarters with proportion: 25 : . . .
If $1 equals 0.9 Euros, $1 equals 1.02 Swiss francs, and 1 euro equals 9.5 . . .
A piece of metal wire measures 2/3 m. Without the use of any other measuring . . .
A frog jumps around the outside edge of a room from a dark tile to the next . . .
In order to test the Archimedes Principle, Sasha put a Lead weight inside a . . .
Sasha is learning about Archimedes at school. His show-off sister is 3 years . . .
The largest denomination of currency ever printed by the Bureau of Engraving . . .
When it is 11am in Geneva (Switzerland) it is 5am in New York (USA). The flying . . .
The train driver knows there is a Granny on board so he wants to give her a . . .
You may have heard the expression quot;The shortest distance between two points . . .
Granny is making a cookie for each of her 12 children, her 28 grandchildren, . . .
If $1,000 is invested in an account at 10% annual interest, how long will it . . .
Leslie Green asks: Bethany throws a hard ball at John when they are in the . . .
Leslie Green asks: Electrical energy can be measured in Joules, but for . . .
Leslie Green asks: Suppose the light bulb in your fridge uses 1 Watt when on . . .
Leslie Green asks: quot;A professional design standard requires that free . . .
A taxi driver called John has 6-week annual holidays. If the average fare is . . .
A peasant bought a cow and a horse. Next day, he sold them for $1,800 each, . . .
Estimate the number of strawberries in the box if we see only a third of them.
A 1-liter bottle contains a mixture that is 1/4 antifreeze, 3/4 water. A . . .
Leslie Green asks: quot;Symmetry is a very big subject, involving much more . . .
Forty cows drink forty-two hundred gallons of water each week. How many . . .
The 52-page newspaper "The Daily Dog News" consists of double sheets. Edgar . . .
If you push a finger through the Earth in the British capital London, where . . .
Where is the speed of sound the smallest? 1 km = 1000 m = 1000 meters
What day of the week is it 777 hours after noon on Monday?
One hundred workers complete a project in 100 working days. Adding ten more . . .
A quot;granny’s dozenquot; is one more than a dozen. Gerry's granny prepared . . .
Captain Hook has two pieces of rope. One piece of rope is 56 meters and the . . .
A tap drips one drop of water every second. It takes 3000 such drops to fill a . . .
The typical healthy resting heart rate in adults is 60–80 beats per minute. . . .
Multiply all the digits of each license plate without using a calculator. . . .
A photographer will pay me $3600 per hour of taking a picture of my smile. . . .
John was ranked fifth from the top and sixteenth from the bottom after a test. . . .
Guesstimation. Anna has 100,000 strands of hair with an average length of 40 . . .
Which is the largest number?
Estimate the number of Metro stations.
What is the smallest passcode that is evenly divisible by all of the numbers . . .
Estimate the product of the digits of the number 7777777.
In London 2012, the USA won 46 gold, 28 silver and 29 bronze medals. Great . . .
Identify the graph that best represents the relationship between the number of . . .
Ten teams enter a basketball tournament. Each team plays one match against . . .
The girl is 10% taller than the boy. In ten years, he will be 50% taller than . . .
Multimedia Messaging Service, or MMS, is a standard way to send messages that . . .
A baby is born every six hours, three deaths occur every week, and five . . .
John saved $7 each week and spent $10 on visiting the cinema with his . . .
A swimming pool is 12.5 x 8 x 3 meters. The average volume of a human body is . . .
A grocer divides 171kg of potatoes into 5kg and 2kg bags. If the grocer . . .
A tree increases its number of nuts at the rate of 100% every year. What was . . .
What amount of water should be added to reduce 200 milliliters of 5 percent fat . . .
How many Wednesdays are there in the month of January that starts on Monday?
The weights of each pair of these boxes are 98kg, 101kg, and 102kg. What is . . .
Two tourists paddled downstream for 2 hours and then upstream for 4 hours. . . .
Mr. Rapid always starts driving on a motorway at exactly 7:00 a.m.
If he . . .
In a recent election, 1111 people voted for two parties. If the ratio of the . . .
I have 1 ton of coins that are 80% gold and 20% copper. I want to melt them . . .
A retailer offers a 25% discount off the normal price of a wooden puzzle. She . . .
A girl rides her bike 4 km in 15 minutes. How long will it take her to ride 15 . . .
Divine the value of the Divine proportion AC.
The balance is in equilibrium. Find Z.
Gerry and Jane are exactly 100 km apart. Gerry leaves his place running at 10 . . .
If 300 people occupy 5/7 of the seats in a concert hall, how many people would . . .
Gerry walks half a distance at 4mph and runs back the other half faster. If . . .
The occupancy percentage of a hotel is 64% for the four summer months and 46% . . .
Water increases its volume by 1/11 when freezing. By what part of its volume . . .
Derek dragon became a vegetarian two years ago. Derek likes to eat 3 baskets . . .
Mrs. Johnson has a large piece of land (pictured here). She divided the land . . .
How many pieces do you form with 6 cuts of a pizza? All cuts go through the . . .
How many bricks are needed to build these walls?
Which figure can form a cube when folded on the dotted lines without . . .
A wooden cube measures 10 cm on an edge. What is the greatest number of . . .
Anna wraps ribbon around a present. She also needs 34 more centimeters (cm) of . . .
What is the maximum number of boxes measuring 0.3m x 0.2m x 1m that can be . . .
Which angle is largest?
Which drawing represents the top view of this figure?
A 7x7x7cube is painted, and then cut into 1x1x1 cubes. How many of the cubes . . .
A cross-shaped lawn has a 1-meter wide path that surrounds it. Each side of . . .
What is the shortest path?
John is building a flight of stairs. Each stair is the same size. What is . . .
A wheel with a red mark on it is rolled along a straight line. What is the . . .
I want to build a fence around a rectangular garden. The garden has an area . . .
The Earth's diameter is 12,700 km. The horizon is 11 km from the top of a . . .
Four towns are situated at the corners of a square. The government decided to . . .
A mathematician wants to approximate the width of a lake. He places 5 markers . . .
A square garden is 401 square meters. The minimum distance between apple . . .
A boy is making boxes from cardboard. He is going to cut square pieces off . . .
Five boys Andrew, Brandon, Chris, Daniel, and Ethan live on State Street. At . . .
The American flag consists of thirteen equally spaced, horizontal red and white . . .
A wire is wound around a circular rod. The wire goes exactly 5 times around . . .
The three circles have fixed centers, and the diameter of a circle is 10% less . . .
A gardener has to reach the island in the middle of a pond without getting wet. . . .
Bill mows the front lawn, which is a 7m by 10m rectangle. The mower cuts a 1m . . .
If I tile a floor with 3000 regular hexagonal tiles as shown here how many . . .
What is the greatest number of possible points of intersection of four . . .
The smallest apple weighs 100 grams. The largest apple has a perimeter 10% . . .
I placed together four identical triangles and the square, without overlaps, to . . .
John cuts a large piece of cheese into small pieces using straight cuts from a . . .
A net can be folded into a cube. Which of the faces is opposite the face . . .
Anna takes a rope that is 16 meters long and creates a square. Bob takes the . . .
The picture shows a tiling pattern which is made of square green tiles 10 x 10 . . .
Small blue squares have the same size. What share of the large square is . . .
The line is 0.25 millimeters thick and 8 kilometers long. What area does the . . .
Fifteen billiard balls perfectly fit into a triangular rack. What is the . . .
The diagram shows my square pond with a tree in each corner. How much can I . . .
It costs $24 to paint a cube. Before painting, it was cut into eight cubes. . . .
The area of the white cross is 20% of the area of the square flag. Five white . . .
A honey bee is walking from point A to point B along the indicated path. If . . .
Alex is framing a small flower box by four rectangular bricks. Each of the . . .
An ant goes from point A to point B along the indicated path. How many times . . .
A guard walks completely around the walls of a rectangular castle with a . . .
I blew some air into a spherical balloon and quadrupled its surface area (4 . . .
Eight poles are evenly spaced on the circumference of a big circle. What is . . .
What is the angle between the hour hand and the minute hand at 14:20? 
ISO (World Standard) drawing sizes are 841 x 1189 millimeters for A0 paper . . .
Guesstimation. How many tennis balls can fit in a school bus?
The circles are equally spaced. Find 2 regions of equal area. One of them is . . .
Find the perimeter of a square that consists of two rectangles with perimeters . . .
Two towers have the same height. Find the ratio of the width to the height . . .
If the area of the square is B and the area of the circle is C, what is the . . .
The figure shows a vertical cross-section of a road. Which part of the road . . .
How many different heights can you build up with 2 bricks, each measuring 30 x . . .
An aquarium has a water surface area of 10,000 cm2. I put a brick . . .
What is the area of a garden? 
The large and small circles touch each other. What part of the large circle . . .
All three pathways consist of semi-circles. Which pathway from A to B is the . . .
A piece of wire 75 cm in length is cut into two parts, one of them being 30 cm . . .
Estimate how long the rope is if its diameter is 1 cm.
A helicopter takes me from Lausanne, Switzerland to the Swiss capital Bern in . . .
What is the probability of breaking a stick into three pieces and forming a . . .
I want to cut the cross by two straight cuts to make the greatest number of . . .
A rectangular yard with an area of 24 m2 has sides in the ratio 2:3. . . .
Which is a better fit? The smaller the percentage of the ‘area left over,’ . . .
You have a 5kg weight and a 12kg weight. They are the same height and are . . .
The golden border of the hexagonal brooch with maximum size 60 mm includes a . . .
If I use 30 g of batter to make a crêpe of 30 cm in diameter, how much batter . . .
How many beads can Jane add to the bracelet?
I divided a 3 x 4 square into 6 squares. What is the smallest number of . . .
What is the smallest area of a rectangle which includes all five squares? 
What is the volume in cubic inches of the pyramid with height 10 inches? The . . .
The picture shows a large cube 4 x 4 x 4 that was assembled from one-unit . . .
James the Mathematician just measured the angle of his piece of pizza, which is . . .
I spent 10 minutes to paint the upper part of the shape in blue. How much . . .
What is the side view of the three-dimensional object?
Gerry has 24 meters of fence and wants to make a rectangular garden with the . . .
Find X.
Dr Heidi has been called in as an expert to solve a problem. There is a device . . .
Take two sheets of A4 paper (210 x 297 millimeters or 8.3 x 11.7 inch). Roll . . .
I want to wrap 30 wooden cubes. Which packaging uses the least package?
There are two paths in a rectangular garden. Find the length of the shorter . . .
A shop owner installs a security camera on the ceiling of his shop. The camera . . .
This stairway is 3 steps high. How many bricks would be needed to make the . . .
A stick of butter weighs 1 kilogram (1000 grams). Jane cuts it in half. . . .
Mark tosses a dime three times in a row. The tree diagram shows all possible . . .
Thirty-three apples, or 11% of the total, were not sold. How many apples . . .
The US Census Bureau stated that 6,830,000,000 people lived in an area of . . .
Tim received the following scores in the online math tests: 80%, 81%, 82%, . . .
A week ago, Anna's jar was filled with 100 jellybeans. She always took the . . .
A catering company places 14 people around six tables. What is the minimum . . .
In a class, 90% of the students earned A-grades on the first test, 80% earned . . .
John has an average of 89 on his three math exams. To earn an A, he must have . . .
How many different 7-digit phone numbers can be used by a phone company? The . . .
As each of five eggs is weighed, the average weight increases by one gram each . . .
In a game, you have a 1/5 probability of winning $100 and 4/5 probability of . . .
Two princes and two princesses are ready to marry. Everybody independently . . .
A pass code must comprise four different numbers from 0 to 9. How many . . .
Dueling Idiots Problem: three idiots participate in a duel. They shoot at the . . .
There are five traffic lights on River Avenue. In how many ways can the . . .
San Jose Scrabblereg; Club No. 21 published a three-letter word list that . . .
Three apples were weighed in pairs and the weights were 200, 204, and 208 . . .
The Venn diagram shows the result of a survey of 80 clients. It indicates the . . .
John sent an email to his three partners. Everybody answered and copied the . . .
A venture capitalist has choosen to invest in only one of three start-up . . .
How many times heavier than a rabbit is an elephant?
What is the probability that two dominoes drawn randomly from a standard set . . .
Bob shaves himself 4 minutes per day. If he lives 70 years, what is the . . .
The national debt of a country is $16.5 trillions. It has a population of 300 . . .
Thirty-three apples, or 66% of the total, were not sold. How many apples . . .
Two friends and I have gone out to dinner. The bill comes to $150.00. . . .
The diagram shows my Saturday morning activities. If I rearrange the . . .
Alex possesses 52% of a business and the rest belongs to Bill. They take . . .
Guesstimation A man can jump up to four times the length of his own body. . . .
Alex must match three different numbers chosen from the integers 1 to 33 in any . . .
The picture shows a subway map. If it takes 3 minutes to go from one station . . .
What was the balance in Bob's bank account on May 18?
Gerry sent three letters to three girlfriends. The postman put the letters . . .
Maria answered 22 of the 25 questions on her test. Half of them, she did . . .
The map shows a toll road network with the prices for each part of the road. . . .
Anna and Bill roll a six-sided die. The first person to roll a six wins. Anna . . .
John and Mary have equal chances of winning. What is more probable? 
After a 20% discount and 8% tax, a set of tin solders costs $540. What was . . .
Every day, a stock price of $444 is either increased or decreased by 4%. When . . .
Seven soldiers have lined up in order of height, tallest to shortest. They . . .
I shoot arrows at the target. When I miss the target, I get zero points. I . . .
Estimate the probability that no two of four sisters were born in the same day . . .
Would you rather sit in a traffic jam for . . . 
Anna spent 120 Swiss francs in a Swiss souvenir shop. She was charged an extra . . .
My car can travel 20 km on one liter of gas on the motorway and 12 km on one . . .
If Anna continues stringing the beads in the same manner as it is shown on the . . .
What is the probability of not getting blue in two runs?
If the first President of the USA George Washington took office in 1789 and the . . .
Anna, Brice, Cindy, and Dan each have the same number of buttons. Who has more . . .
John's family tree includes 10 generations. What is the minimum number of . . .
Veryfast Airlines loses 20% of the luggage. Gerry puts his three favorite toys . . .
A line containing 9 keyboard letters on Gerry's laptop does not work. If his . . .
Estimate the number of keys on the keyboard.
How many minutes have already passed today?
A ball rebounds half of the height from which it is dropped in a sport hall. . . .
If the ratio of men to women in a company is 5 : 7, which of the following . . .
Jane wants to make different bracelets. Which bracelets are the same?
How many steps are there in the shortest path from A to N?
Steve wonders "Why don’t I have a girlfriend?" He uses the following . . .
Gerry's income is seven-eighths that of Jane. Gerry's expenses are . . .
The masses of sugar and water in my 200 g tea cup are in the ratio 1 : 9. If . . .
What is 1% of 10% of 100% of $1,000?
If I roll two dice, what is the probability of rolling a six on at least one of . . .
A survey shows that 85% of the population of a country speak English, 75% of . . .
In how many ways can Jane put two eggs of different color into the package?
I put red and white chocolate candies into a bag. I randomly took 2 candies, . . .
Buy 2 for the price of 3 and get 50% off! What is the final rebate do . . .
Leslie Green asks: quot;Henrietta is threading the last bead onto a necklace . . .
Gerry tosses a coin and Jane tosses 2 coins. What is the probability that . . .
Cletus is absolutely, definitely, the worst student the driving school has ever . . .
Three brothers share their father's sheep. Father said that the second son . . .
Martin has ten thousand dollars in the Mad Money's bank account. The interest . . .
Jane has a 5-liter bucket with 5%-fat milk and 3-liter bucket with 3%-fat . . .
Christmas is getting near, and a four person company wants to run a Secret . . .
Jane has forgotten the address of her friend’s house, but knows it contains the . . .
Lottery 6-digit numbers are from 000001 to 999999. A ticket is considered to . . .
What are the odds of getting at least two tails in a row if you flip a dime . . .
Which of the following is closest to
1234567 x 7654321
Sixteen teams enter a hockey tournament. If there can be no draws, how many . . .
A river boat travels 2 km in 12 minutes with the current and 1 km in 18 minutes . . .
A melon slice weighs 5kg, and 95% of the weight is from water. After lying in . . .
John packs 10 CDs in a box. If he has 123 CDs of one type, and 45 of . . .
Which statement is NOT correct?
Pipe 1 can empty a full tank in 1 hour. Pipe 2 can empty the tank in 2 hours. . . .
The number of strawberry cones sold at an ice cream store was 1 more than 3 . . .
Water flows through two pipes from F to G. As shown, there are four taps, A, . . .
A lady always arrives at the train station at exactly six o'clock to pick up . . .
Three referees A, B and C are at the corners of a rectangular field. At . . .
The left 11-tooth gear turns at 124 revolutions per minute. The middle gear . . .
I don't quite remember my five-digit password. The first and last digits are . . .
Anna traveled 3600km in a car. She had six tires and changed them such that . . .
There are 72 rabbits in Funnytown. The population of rabbits in Funnytown . . .
Bill buys oranges at five for $1 and sells at one for $5. How many oranges . . .
I have apples and paper boxes. If I place 8 apples into each box, I will have . . .
Swiss trains leave from Zurich for Geneva every hour. The trip takes three . . .
A cube consists of small black and white cubes. Two small cubes of the same . . .
How many ways can one travel from point H to point F if moving north and west . . .
The weight limit for an elevator is 800kg. Which statement is absolutely . . .
I can buy Swiss cheese in boxes of 250 grams, 450 grams, 650 grams, and 850 . . .
Which is the single discount that is the same as three successive discounts of . . .
Construction work commenced on both sides of a 450 meter tunnel. If a . . .
Bryan went for a haircut yesterday. He has 120000 strands of hair and it took . . .
The Ancient Olympic Games were held every four years. They already existed at . . .
The figure shows the number of people required for the activities of a project . . .
A company initially planned for sixty people to complete a project in 100 days. . . .
John is going to repair his house. There are three major activities: . . .
A project manager has to determine whether to purchase or rent four cars for a . . .
Swiss trains leave from Zurich for Geneva every hour. The trip takes three . . .
You have a part of a black-and-white map of a reef coast. You are at point A . . .
Anna, Beatrice, and Cindy run a 1000-meter race. All of them run at a . . .
Brett, Cindy, and Daniel each launch a 100-day project. On day 100, Brett . . .
A shopkeeper buys two kinds of cacao beans at $64 and $96 a bag. He mixes the . . .
Each of the 20 Knights of the Round Table clinked his mug with the Knights on . . .
There were nine knights in a kingdom and enough hay to feed their horses for . . .
Anna has 7 biscuits, Bill has 4, and Cindy has 1. They share them out equally. . . .
A series of 10 books were published at one-year intervals. The sum of the . . .
How many "yes or no" questions are needed to guess any 3-digit lock code?
Working alone, Mr. Smith earns the family's monthly budget in 40 calendar days. . . .
Mary can complete an activity in 40 days. John can complete the activity in 50 . . .
A math teacher usually has 21 students in her class. Anna, Bill, and Craig are . . .
A rich man is saving for a new car. He sets up an automatic transfer of $1000 . . .
A 44-month long project is divided into three consecutive activities. The . . .
A man and his beloved wife carry a 20kg basket. If the lady carries only 8kg, . . .
A leading supplier left a solar plant project seven months after the project . . .
John and Mary, whose average annual income is $110,000, have just moved from . . .
In a test of 50 questions, the final score is calculated by subtracting three . . .
What is the total surface area of 28 identical cubes which together have a . . .
A hockey league consists of 6 teams, with 100 players in total. Each team has . . .
If each coconut is priced at $9, then the shopkeeper loses $11. If each . . .
It takes 30 seconds to cut the woodblock into three pieces. How much time . . .
I composed the numbers from strips of paper. Find the odd one out.
After an hour, Evguenia catches and frees 10 fish. If there are 100 fish in a . . .
What is the word coiled inside this circle?
Gerry bought 3 oranges and 8 apples for $5. The next week he bought 8 oranges . . .
In a village, there are 100 families with either one child or none. This is a . . .
How many students are there in Evguenia's class, if 5% of the students have . . .
A $1 bill measures 156 mm long and weighs approximately 1 gram. How much . . .
We need 200 tons of such stones to pave a city square. How much stone do we . . .
A third of 8 is $4. Based on that proportion, what is one-fifth of 6?
I choose a cube, which is third from the left, fourth from the right, fifth . . .
What team do you join to get the greater amount of melon?
Jane lives exactly in the middle on a short street. How many houses are there . . .
Jane and Kate are ski racing. They both start at the same place, at the same . . .
I can cut off 4 circles from a circular sheet of dough. I use the left-overs . . .
Leslie Green asks: I am allergic to washing powder, but I don’t want my . . .
Sammy the sea lion has spotted a gorgeous Lady sea lion before anyone else. She . . .
Evguenia's birthday parties are always the same, and always boring. She gets . . .
Leslie Green tells a story and asks : It has been several years since the . . .
Leslie Green asks: It is difficult to see a 2% price difference between food . . .
Leslie Green asks Some forms of loans are more iniquitous than . . .
Three observers, not more than 1km apart on flat windless terrain, report the . . .
Most solids expand when heated and contract when cooled. Does a hole in a . . .
In a particular city it is illegal for those aged over 18 to consume children's . . .
There are three goddesses named Mendax, Fidelis and Furtibus; one on your left, . . .
Jane races on a circular track. Her bicycle tire has a circumference of 1.5 . . .
The unit price of a thingamajig is $3.50. If I buy 10, the unit price drops . . .
The chocolate biscuit factory you are now in charge of has a problem. There are . . .
A shopkeeper purchased 300 bulbs for $0.95 each. However, every . . .
You are pitching your new idea to a panel of Venture Capitalists (VCs) to . . .
The playing cards shown need to be sorted into increasing order with the lowest . . .
If Edgar cleans his teeth twice per week and changes the toothbrush every time . . .
A farmer bought 3 cows for $3000 and sold them for $4000. He bought them . . .
Which is the best estimate of the total cost of these toys? 
At 11:30 A.M. Alex started painting a fence. By noon, he had painted this . . .
Ben's grandmother asked him to go to the store to buy at least 1000 grams of . . .
A dozen balloons cost 48 cents. How many balloons cost 1 dollar?
A farmer normally sells sheep for $200 each. This winter, the farmer is . . .
John is making a rectangular flower box. He is using wood that is 10 . . .
Americans measure the temperature in oF. Europeans measure the . . .
A particular stock is valued at $40 per share. The value increases by 25% and . . .
Which coupon should Bob use to save the most money on 2 hammers originally . . .
Apples are sold in bags of four that cost $5 per bag, or bags of six that cost . . .
A car that originally sold for $40,000 depreciates at a rate of 50% per year. . . .
It costs $24 to paint a cube. Before painting, we divide the cube into two . . .
The original price of an umbrella was $16. What was the price of the umbrella . . .
500 employees work for company XYZ, where the ratio of men to women is 6 to 4. . . .
A 2-meter wide path is constructed around the outside of a rectangular garden . . .
John works 4-hour shifts at a call center. He earns $4 per hour and $4 per . . .
Tom is choosing between two brands of AA batteries for his pocket flashlight. A . . .
Jim sells 80 percent of pineapples he had and throws away 10 percent of the . . .
A space rocket has a critical fuel-control system protected by 4 fuel . . .
Jane wants to buy a car. The fuel efficiency is two times more important to . . .
The picture shows four supermarket lines, viewed from above. The numbers are . . .
The space between these green square tiles is filled by grout. Its width is . . .
The cross-section of the identical arc stones is a trapezoid with three equal . . .
The traveling salesman problem: a salesman has to visit eight towns and return . . .
The Chinese postman problem: a postman wants to travel along each road in his . . .
The diagram shows a road network. All cars drive in one direction from A to B. . . .
I would like to rearrange the items in the six bins shown on the right to . . .
I use a room that is 7 x 11 to arrange five boxes. I would like to move the . . .
I placed seven balls into a square box. Is it possible to rearrange the balls . . .
How many chain links do I need to produce a 2.4-meter chain? All sizes are . . .
Which spring wire is longest?
Yesterday, I caught 30 fish of a certain size in a pond. I marked and . . .
Estimate the area of the lake shown on the right.
In a casino on a Sunday, 90% of the visitors lost $100 each, 9% of the . . .
A chain with 3 links is 10 cm long. A chain made from 5 links of the same . . .
All sizes can be 1% bigger or smaller compared with the initial design sizes. . . .
John works on a 12-month project. Forty percent of the first 3-month activity . . .
A project manager needs a car 3 days per week. The daily cost of car renting . . .
I can buy gold bars in boxes of 25 kilograms, 45 kilograms, 65 kilograms, and . . .
The business of company A is 10% greater than the business of company B now. . . .
The picture shows a simplified statement of income for company ABC in million. . . .
A hammer and a nail cost $21. If the hammer cost $20 more than the nail, how . . .
A peasant bought a cow for $3000 and sold her for $4000. He bought her back . . .
A team has $100. One ball costs $8. The team gets every sixth ball for free. . . .
How many minutes before midnight does a 24-hour digital clock show the same . . .
A piece of soap is 50x40x100 mm. A layer of 0.125 mm disappears every time I . . .
The diagram shows a road network. All cars drive in one direction from A to F. . . .
I saw the lightning strike the ground near the far side of the lake and heard a . . .
Seven apricots were dried and no longer contain water. If the fruits . . .
Water weighs 1000kg per cubic meter at 4 degrees Celsius. Fresh snow that . . .
The picture shows the rectangular floor plan of the first level of a house. . . .
Which point cuts the rope into two equal parts?
A revolving door with three wings makes 5 complete rotations in a minute. . . .
Mrs. Brown bought 98 boxes of strawberries at $9 per box but 25 % of them were . . .
Estimate how many symbols you can write on your body if one symbol requires one . . .
Since the day he was born, Bill's parents have put $1000 in his bank account . . .
Items accepted by an airline must not be more than 3 x 4 x 12 ft long. What . . .
According to USDA's Economic Research the average American ate 2000 lbs of food . . .
I see the reflection of the mountain peak 10 meters from me. I know that the . . .
How long do One Thousand and One Nights last? A Persian king, Shahryar, . . .
Tickets for a football game are available for $29 in advance or $39 if . . .
While eating out Gerry and Jim together tipped their server $7 in total. . . .
The population density of the Italian capital Rome is about 2,000 people per . . .
Estimate how many cubes there are in the pyramid.
Gerry arrived in the Murtenhof Hotel on January 28th in the afternoon and left . . .
There are 17 parallels and 12 meridians on a globe. Into how many areas is the . . .
When Pinocchio lies, his nose gets twice as long. When he tells the truth, his . . .
A pedestrian crosswalk consists of black and white stripes each 0.4 m wide. . . .
The diagram shows some of the results of a six-person contest. There are two . . .
I add blue blocks one by one on the top. Does the structure fail? 
The picture shows a composite structure under stress. Estimate the percentage . . .
Use of composite materials decreases the weight of passenger airplanes. How . . .
Eugenia wants to make a simple bridge for her dog. Currently he has to run . . .
Now that I have made a vast fortune from my patented premium dog biscuits, I . . .
A plastic ruler is much easier to bend in one direction than another according . . .
Leslie Green asks: A road traffic junction has no provision for pedestrians. . . .
Modern petrol-electric hybrid cars typically have so many sensors that you can . . .
Leslie Green asks: My neighbor John has invented a perpetual motion machine. . . .
Leslie Green, Oxfordshire, UK, asks: quot;My neighbor a famous Professor of . . .
Leslie Green asks: quot;Endocrinic Igorosis is a horrible . . .
Leslie Green asks: quot;You accidentally knock an almost full opened can of . . .
There are two gods named Mendax and Fidelis, one on your left, the other on . . .
Leslie Green asks quot;Suppose a particular nuclear waste material has a . . .
A frog jumps around the outside edge of a room from a dark tile to the next . . .
When it is 11am in Geneva (Switzerland) it is 5am in New York (USA). The flying . . .
The train driver knows there is a Granny on board so he wants to give her a . . .
You may have heard the expression quot;The shortest distance between two points . . .
Leslie Green asks: Electrical energy can be measured in Joules, but for . . .
Leslie Green asks: Suppose the light bulb in your fridge uses 1 Watt when on . . .
Leslie Green asks: quot;A professional design standard requires that free . . .
Estimate the number of strawberries in the box if we see only a third of them.
A 1-liter bottle contains a mixture that is 1/4 antifreeze, 3/4 water. A . . .
Leslie Green asks: quot;Symmetry is a very big subject, involving much more . . .
What day of the week is it 777 hours after noon on Monday?