Riddle 8

A tree doubled in height each year until it reached its maximum height over ten years.

How many years did it take for the tree to reach half its maximum height?


The tree took 9 years to reach half of its maximum height. This is because the tree doubles in height each year, and at year 9, it is half of the height it reaches in year 10.

Related Riddles

Riddle 20

In 1990, a person was 15 years old. In 1995, that same person was 10 years old...

Riddle 5

Rachel goes to the supermarket and buys 10 tomatoes. Unfortunately...

Riddle 2

If a zookeeper had 100 pairs of animals in her zoo, and two pairs of babies...

Scroll to Top