HardHow Many Riddle
A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?
Riddle
A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?
Choose an answer
A.Five years
B.Eight years
C.Ten years
D.Nine Years.
Hint: It's a 2-word phrase with 9 letters, starting with "N".
Answer
Nine Years.
Why this is the answer
Since the height doubles every year, the tree was at half its final height exactly one year before reaching full height, i.e. year nine.
This riddle is filed under How, What, Why Riddles and rated Hard.