Frog Escape

A frog falls down a well that is 30 feet deep. Each day he climbs up 2 feet, and each night he falls back down 1 foot. How long does it take him to climb out of the well?

View Answer
29 days! Each day he goes up 2, and each night down 1. A net gain of 1 foot. But on the 29th day he goes up the usual 2 feet, and is out of the well, so he doesn’t fall back the foot at night.
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