Absolute value

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Absolute value

by amontobin » Mon Jul 17, 2017 10:43 am
Is m>n?

(1) |m| > |n|
(2) m^2>n^2

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by GMATGuruNY » Mon Jul 17, 2017 12:26 pm
amontobin wrote:Is m>n?

(1) |m| > |n|
(2) m^2>n^2
Both statements are satisfied if m=1 and n=0, in which case m>n.
Both statements are satisfied if m=-1 and n=0, in which case m<n.
Since the answer to the question stem is YES in the first case but NO in the second case, the two statements combined are INSUFFICIENT.

The correct answer is E.
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by Jay@ManhattanReview » Mon Jul 17, 2017 11:37 pm
amontobin wrote:Is m>n?

(1) |m| > |n|
(2) m^2>n^2
Statement 1: |m| > |n|

=> m > n if m and n are positive numbers. For example, say m = 2 and n = 1. The answer is Yes.

However, m < n if m and n are negative numbers. For example, say m = -2 and n = -1. The answer is No. Not sufficient.

Statement 2: m^2>n^2

=> |m| > |n|.

It's the same statement as is Statement 1. Not sufficient.

Even combining them will not help as both the statement are in fact the same.

The correct answer: E

Hope this helps!

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