X=EVEN?

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X=EVEN?

by grandh01 » Sun Aug 19, 2012 7:34 pm
Is x an even integer?
(1) x is the square of an integer.
(2) x is the cube of an integer.

OA is E

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by Anurag@Gurome » Sun Aug 19, 2012 7:43 pm
grandh01 wrote:Is x an even integer?
(1) x is the square of an integer.
(2) x is the cube of an integer.

OA is E
(1) x is the square of an integer.
If x = 8² = 64, x is an even integer.
If x = 1² = 1, x is an odd integer.
No definite answer; NOT sufficient.

(2) x is the cube of an integer.
If x = 4^3 = 64, x is an even integer.
If x = 1^3 = 1, x is an odd integer.
No definite answer; NOT sufficient.

Combining (1) & (2), we have two values of x, either 1 or 64; NOT sufficient.

The correct answer is E.
Last edited by Anurag@Gurome on Sun Aug 19, 2012 8:14 pm, edited 1 time in total.
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by grandh01 » Sun Aug 19, 2012 8:00 pm
Can you help with my thinking for this question. Can the answer not be x=64, because 8^2 =64, and 4^3=64, using both statements together? Thank You

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by Anurag@Gurome » Sun Aug 19, 2012 8:15 pm
grandh01 wrote:Can you help with my thinking for this question. Can the answer not be x=64, because 8^2 =64, and 4^3=64, using both statements together? Thank You
Hi, I have edited my previous reply. Hope this helps.
Thanks!
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