A Frog in the Well

A frog is at the bottom of a 30-meter well. Each day he summons enough energy for one 3-meter leap up the well. Exhausted, he then hangs there for the rest of the day. At night, while he is asleep, he slips 2 meters backwards. How many days does it take him to escape from the well?




Similar Riddles

You walk into a creepy house by yourself. There is no electricity, plumbing, or ventilation. Inside you notice 3 doors with numbers on them. Once you open the doors you will die a particular way. Door No.1 You’ll be eaten by a lion who is hungry. Door No.2 You’ll be stabbed to death. Door No.3 There is an electric chair waiting for you. Which door do you pick?

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In the following series, a set of numbers is progressing with a particular pattern. Can you deduce that pattern and find the missing set?

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Find The Next Number in this series.
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A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

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What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

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I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
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Hint 2: I am a play on words.

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In the 1920s, people feared that crossword puzzles would contribute to illiteracy.