A frog climbs a all of 30 feet everyday climbs 3 feet and every night 2 feet slips find the no of days
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28 days.
till 27 days,it will move 1 step forward and 2 step backward. hence it will cover 27 metres in 27 days. at 28th day , when it will move 3 metres upward,it will be outside the well and will have no need to slide backward.
till 27 days,it will move 1 step forward and 2 step backward. hence it will cover 27 metres in 27 days. at 28th day , when it will move 3 metres upward,it will be outside the well and will have no need to slide backward.
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The frog climbs 3 feet in a day
Slips 2 feet in night.
That means, climbs 1 feet a day.
In 27 days , 27 feet.
On the 28th day, when it climbs 3 feet upward , it comes out of the well
Therefore, No.of data required to climb a 30 feet wall
28days.
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