A frog at the bottom of a well climbs up 3 ft every day, but slips back 2 ft during the night. How long will it take to reach the top, if the well is 20 ft deep?

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A frog at the bottom of a well climbs up 3 ft every day, but slips back 2 ft during the night. How long will it take to reach the top, if the well is 20 ft deep?

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20

THE ANSWER IS 20

18

no, hitesh chitan is wrong

the correct ans is 17.5 days

yes Chintan is correct.

On 18th evening, frog reaches the TOP of the well.