kaf wrote:Can some please explain to me why the answer to this DS question is E
Is the integer q a perfect square?
(1) q is even.
(2) 13 < q < 17
thanks
Question: q = x^2 ?
q is an integer
Statement I
q is even
4 = 2^2 = perfect square
6 = not perfect square
Insufficient
Statement II
13 < q < 17
q = 15 = not a perfect square
q = 16 = 4^2 = perfect square
Insufficient
Combining statements I & II
q = 14 = not a perfect square
q = 16 = perfect square
Insufficient
Hence E.
Hope this helps.
