a monkey tries to ascend a greased poles 14 meters high. He ascend 2 meters in first minute and slipsdowns 1 meters in the alternate minutes. If he continues to ascend in this fashion ,how long does he takes to reach the top?
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He takes 13 Minutes.
Reason:
After first 12 minutes, he reaches 12 meters.
In the 13th minute, he climbs 2 meters
12 + 2 = 14(13th step)
14 meters is the required height and it reached in 13th minute.
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