Arrange Four 9's

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?




Similar Riddles

Can you find a pattern and the missing number in the series given below?

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In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?

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What is harder to catch the faster you run?

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You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

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John was visiting his friend Jacob. He found out that his friend's wife had just killed a burglar in self-defense.
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John gave half of the apples he had plus one more to Jacob. He gave half of the remaining ones plus one more to James. Now, John was left with just one apple.

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There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

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In a rainy season, one day 3 huge ladies walked under a normal-sized umbrella.
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A thief enters a store and threatens the clerk, forcing her to open the safe. The clerk says, “The code for the safe is different every day, and if you hurt me you’ll never get the code.” But the thief manages to guess the code on his own. How did he do it?

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Amazing Facts

Gambling

In Canada, a mathematical puzzle must be solved in order to win the lottery to classify it as a “game of skill” not gambling.