Question

In its search for water a frog fell down into a 30m well.Its progress out of the well was very erratic.Each day it managed to climb up 3m,but the following night, it slipped back 2m. How many days did it take to get out of the well

Answer 1

30days because frog climb 3m at one day
and 1m slip so

Answer 2

the answer is 30 days
1 day=3-2
therefore 1×30=30