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IS x > Y

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Source: — Data Sufficiency |
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by Frankenstein » Sun Jun 12, 2011 8:39 am
Hi,
From(1): (x-y) != 0. So, x != y. Can't say which of x,y is greater
Insufficient
From(2): root(x-y)^2 is +ve . So, x-y !=0. Can't say which of x,y is greater
Insufficient

Hence, E
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by Anurag@Gurome » Sun Jun 12, 2011 8:41 am
vinayreguri wrote:IS X > Y
1. (x-y)^2 !=0
2 root(x-y)^2 is +ve
Statement 1: (x - y)² ≠ 0
Hence, x ≠ y

Not sufficient

Statement 2: √(x - y)² > 0
Square root of any quantity is always non-negative.
Hence, from this statement we conclude x ≠ y.

Not sufficient.

1 & 2 Together: Both statement concludes x ≠ y.
Hence, we have no new information.

Not sufficient.

The correct answer is E.
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