# GRE Question of the Day (July 23rd)

- Jul 23, 02:00 AM Comments [0]

## Math

k is a positive integer and 225 and 216 are both divisors of k. If $${k = 2^a \times 3^b \times 5^c}$$, where a, b and are positive integers, what is the least possible value of $${a + b + c}$$?

(A) 4

(B) 5

(C) 6

(D) 7

(E) 8

Question Discussion & Explanation