Building Puzzle

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?




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A spy was in Canada trying to steal insider information on how to set up new Maple Syrup factories in their country. He was introduced to the operations manager of the biggest factory in Canada. However, the manager was suspicious and decided to test him with a question before he trusted him. So he asked, “What would you be sure to find in the middle of Toronto?” The spy thought fast and came up with an answer for the manager. What was his answer?

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How do you go from 98 to 720 using just one letter?

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How many triangles do you see in the picture puzzle below?

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What phrase is represented by the Rebus

Unique Rebus Riddle

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When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

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What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

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Count the squares in the matchstick puzzle below?

Count the Squares

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Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?

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In a stable, there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable

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What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

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Amazing Facts

Gamers

In 2011, people playing Foldit, an online puzzle game about protein folding, resolved the structure of an enzyme that causes an Aids-like disease in monkeys. Researchers had been working on the problem for 13 years. The gamers solved it in three weeks.