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Source: — Problem Solving |

by mike34 » Thu Jan 06, 2011 12:48 am
Answer : B
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by Night reader » Thu Jan 06, 2011 12:49 am
mike34 wrote:Answer : B
correct too!
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by Anurag@Gurome » Thu Jan 06, 2011 1:37 am
Night reader wrote:If |x|=x and y<|y|, which of the following statements is true:

A. x+y>1
B. xy=<0
C. xy=1
D. x=y
E. x<0
1. |x| = x implies x ≥ 0
2. |y| > y implies y < 0

Therefore the product xy is either negative or equal to zero.

The correct answer is B.

Note: We can individually eliminate the options too. But that is not really required as only one of the five options is correct. But if anyone is looking for that I'm giving the reasons of eliminating other options. The reason behind the elimination of C and D are clear from the above explanation. Option E is eliminated as it directly violates the result of (1). Option A is not true always. Thus eliminate it too.
Anurag Mairal, Ph.D., MBA
GMAT Expert, Admissions and Career Guidance
Gurome, Inc.
1-800-566-4043 (USA)

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