28
Sanam’s age is the cube of a whole number. It was square of another whole number two years ago. How long he must wait before his age is again the cube of a whole number?
- A 2 years
- B10 years
- C37 years
- D39 years
Answer not set
Discussion 1
Log in or create a free account to reply and vote.
0
CCommunity
Sanam’s age is the cube of a whole number:
3 × 3 × 3 = 27
It was square of another whole number two years ago.
Two years ago his age = 25 = 5 × 5
Next perfect cube is 64 = 4 × 4 × 4
So he must wait for 64 - 27 = 37 years.
Hence, he must wait for 37 years
3 × 3 × 3 = 27
It was square of another whole number two years ago.
Two years ago his age = 25 = 5 × 5
Next perfect cube is 64 = 4 × 4 × 4
So he must wait for 64 - 27 = 37 years.
Hence, he must wait for 37 years