there is a frog inside a well 40 m deep. the frog jumps 3 m high and falls back 2m . in how many jumps will it come out of the well ? (answer is 38 ) how

Answer 1

In 37 jumps the frog goes up 37 meters. On the 38th jump it jumps 3 meters to the top. (He doesn't fall back since he's out of the well.