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DS princeton CAT 1 help

Expert replies
Source: — Data Sufficiency |

Re: DS princeton CAT 1 help

by Morgoth » Wed Mar 18, 2009 11:03 am
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.
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