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You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

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A journalist was investigating a sacred cult in the jungles of Africa when he was caught by one of the person. He was confined in a cave till the leader arrived. The leader told him that he need to tell him a statement. If he thinks the statement is true, then the journalist head will be chopped off. If he thinks that the statement is false, his head will be smashed with a hammer.

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What does an Island and the letter T have in common?

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In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
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As we know that white starts the game of chess. Can you find the scenario shown in the picture below is possible when all the white pieces are at the original place while the black pawn is not as in the below picture?

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Which letter of the alphabet has the most water?

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Why do you find that most of the buildings are deprived of the 13th floor?

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Your job is to measure 45 minutes if you have only two cords and matches to light the cords.

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How many times do a clock's hands overlap in a day ?

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Amazing Facts

Challenging

There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.