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GRE Math Challenge #41- If x is an integer

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GRE Math Challenge #41- If x is an integer [#permalink] New post 28 Feb 2015, 02:57
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100% (00:04) correct 0% (00:00) wrong based on 2 sessions
If x is an integer, what is the value of x?


Column AColumn B
\(|23x|\)\(2\sqrt{x^2}\)

A. Column A is prime
B. Column B is prime
C. Column A & B both are prime
D. Column A & B both are NOT prime
E. Cannot be determined
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Re: GRE Math Challenge #41- If x is an integer [#permalink] New post 11 Mar 2018, 05:09
soumya1989 wrote:
If x is an integer, what is the value of x?


Column AColumn B
\(|23x|\)\(2\sqrt{x^2}\)

A. Column A is prime
B. Column B is prime
C. Column A & B both are prime
D. Column A & B both are NOT prime
E. Cannot be determined


We are told that x is an integer. Thus, we can sex x as 0. Then, for quant A, |23X|would be 0.

For quant B, \(2\sqrt{x^2}\) would be 0, as well.

YET, if we set x=1. Then for Quant A, |23X|would be 23. For quant B, \(2\sqrt{x^2}\) would be 2.

Hence, the ans wouldm be D.
Re: GRE Math Challenge #41- If x is an integer   [#permalink] 11 Mar 2018, 05:09
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GRE Math Challenge #41- If x is an integer

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