The Frog And The Well

Riddle: A frog fell into a well 12 feet deep. He could jump 3 feet, but every time he jumped 3 feet, he fell back 2 feet. How many times did he have to jump to get out of the well?

Answer: The tenth jump took him out. (On the tenth jump he reached 13 feet and was out.)

Source: https://www.riddles.com/1374

A frog fell into a well 12 feet deep. He could jump 3 feet, but every time he jumped 3 feet, he fell back 2 feet. How many times did he have to jump to get out of the well? — The Frog and the Well by Anonymous v1.

Riddle: A frog fell into a well 12 feet deep. He could jump 3 feet, but every time he jumped 3 feet, he fell back 2 feet. How many times did he have to jump to get out of the well? Answer: The tenth jump took him out. (On the tenth jump he reached 13 feet and was out.) — by Anonymous v2.