How many days!!!

Each day it rises 1 m(since it rises 3 m and falls 2 m) . After 27 days it rose 27 metres. At the 28th day it rose 3m and got out of the well

In one day and one night, he climbs up $3-2=1$ meter. It follows that in twenty seven days and twenty seven nights, he climbs up $1 \times 27=27$ meters. The next day, he climbs up $3$ meters making a total of $30$ meters in $28$ days.

Suppose ;

Day 1 - It jumps 3 meters. 0 + 3 = 3. Then falls back 2 meters at night. 3 - 2 = 1 Day 2 - It jumps 3 meters. 1 + 3 = 4. Then falls back 2 meters at night. 4 - 2 = 2.

Simmilarly ...... ... Day 26 - It jumps 3 meters. 25 + 3 = 28. Then falls back 2 meters at night. 28 - 2 = 26. Day 27 - It jumps 3 meters. 26 + 3 = 29 Then falls back 2 meters at night. 29 - 2 = 27. Day 28 - It jumps 3 meters. 27 + 3 = 30

Therefore , Rabbit take 28 days to get out of the well.