MONDAY MIND GAME

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

Note: Assume after the first leap that his hind legs are exactly three feet up the well. His hind legs must clear the well for him to escape.




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28

Each day he makes it up another foot, and then on the twenty seventh day he can leap the final three feet and climb out.

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