1.  252 can be expressed as a product of primes as:
A. 2 x 2 x 3 x 3 x 7
B. 2 x 2 x 2 x 3 x 7
C. 3 x 3 x 3 x 3 x 7
D. 2 x 3 x 3 x 3 x 7

Answer: Option A

Explanation:

Clearly, 252 = 2 x 2 x 3 x 3 x 7.