Category Archives: Puzzles

Puzzles – How many days?

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?

Note:
1. After the first leap his hind legs are exactly three meters up the well.
2. His hind legs must clear the well for him to escape.

Show me answer and explanation

Answer : 28 Days
Each day he makes it up another meter, and then on the twenty eighth day he can leap three meters and climb out.