The age of Mr. X last year was the square of a number and it would be the cube of a number next year. What is the least number of years he must wait for his age to become the cube of a number again?

The age of Mr. X last year was the square of a number and it would be

1.	The age of Mr. X last year was the square of a number and it would be the cube of a number next year. What is the least number of years he must wait for his age to become the cube of a number again?
A.	42
B.	38
C.	25
D.	16
Answer» C. 25