Bunuel wrote:

If x is an even integer, which of the following is an odd integer?

(A) 3x + 2

(B) 7x

(C) 8x +5

(D) x^2

(E) x^3

With questions like this, we can apply RULES related to odds and evens (as skywalker18 did), or we can just PLUG IN an even value for x.

The easiest value to plug in is

0(A) 3(

0) + 2 = 2 EVEN - ELIMINATE A

(B) 7(

0) = 0 EVEN - ELIMINATE B

(C) 8(

0) +5 = 5 ODD. DONE!!!

Answer: C

For "kicks" let's keep going (although, on test day, we would select C and move onto the next question.

(D)

0^2 = 0 EVEN - ELIMINATE D

(E)

0^3 = 0 EVEN - ELIMINATE E

Cheers,

Brent

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Brent Hanneson – GMATPrepNow.com

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