Jamboree Question of the Day - Day 91, Feb 11th 2011

X is a multiple of 5, X=a^2 *b, a and b are integers. Which of the following must be the multiple of 125?

A) ab

B) ab^2

C) a^2.b^2

D) a^3b^3

E) 2a^b

Answer (Posted on 12th): D