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GMAT Problem of the Week. Issue#1

642-832 070-336 exam

If x2 is an even integer, which of the following must be true?

 

  1. x is an odd integer
  2. x is an even integer
  3. x3 is an odd integer

(A) I only
(B) II only
(C) III only
(D) None
(E) II and III only

Explanation (highlight the text below to see the answer):

The answer is casino online D.

  642-832 exam

Suppose x2 = 2. Then x = 2 or x = -2. 2 is not an integer, hence I and II are not true. (2)3 = 22, which is not an integer either. As all statements claim x to be an integer, none of them must be true, and the answer is D. SK0-003

4 thoughts on “GMAT Problem of the Week. Issue#1

  1. Hi, Kostya!
    All problems and explanations posted are created by our GMAT consultants. If you have any questions, please, let us know ;)

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