Riddle: A snail climbs a 15 m tree. It climbs 5m every day and sleeps at night. While sleeping it slides down by 4 m. When does it reach the top?
This is an intresting math question. The correct answer is not 15 meters, of course. Lets’ look the correct answer step by step.
First day, snail clims 5 m and slide down 4 m. It went forward 1 m in total.
Second day, snail clims 5m an slide down 4m. It went forward 2 m in total…
10th day, it went away 10 m in total.
11th day, it climbs 5m and reaches the top before it sleeps again.
So, answer is 11 days.