If y is the smallest positive integer such that 3,150 multiplied by y is the square of an integer, then y must be
A. 2
B. 5
C. 6
D. 7
E. 14
A. 2
B. 5
C. 6
D. 7
E. 14
Note that 3150 = 2 × 3 × 3 × 5 × 5 × 7, only 2 and 7 are not forming a pair, hence, to make this a perfect square the least integer required is [spoiler]2 × 7diehard_gmat wrote:If y is the smallest positive integer such that 3,150 multiplied by y is the square of an integer, then y must be
A. 2
B. 5
C. 6
D. 7
E. 14
E[/spoiler]
