Frog in the well
A frog sits at the bottom of a 30-foot well. Each day it climbs 3 feet, but each night it slips back 2 feet. On which day does the frog first escape the well?
Show hints (2)+
- Net progress is 1 ft/day - but watch the final climb.
- Once a daytime climb reaches the top, the nightly slip never happens.
Answer
Reveal answer →Final answer
28
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