There is a 30 foot pole. A Monkey climbs at the rate of 3 feet during the day, but as it falls asleep in the night it slips by 2 feet. Which is the earliest day when the monkey can reach the top of…
Question and options
There is a 30 foot pole. A Monkey climbs at the rate of 3 feet during the day, but as it falls asleep in the night it slips by 2 feet. Which is the earliest day when the monkey can reach the top of the pole?
- 10th day
- 27th day
- 28th day
- 30th day
Answer and explanation
Correct answer: C - 28th day
The monkey gains a net 1 ft per day-night. After 27 days it is at 27 ft, and on the 28th day it climbs 3 ft to reach 30 ft before slipping, so the 28th day.
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CUSAT CAT Five-Year LL.B.
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