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# Is x^2 greater than x? (1) x^2 is greater than 1. (2) x is

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VP
Joined: 18 May 2008
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Is x^2 greater than x? (1) x^2 is greater than 1. (2) x is [#permalink]

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21 May 2008, 03:13
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Is x^2 greater than x?

(1) x^2 is greater than 1.
(2) x is greater than -1.

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SVP
Joined: 04 May 2006
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Schools: CBS, Kellogg

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21 May 2008, 03:30
ritula wrote:
Is x^2 greater than x?

(1) x^2 is greater than 1.
(2) x is greater than -1.

A

The question is similar to x<0 and x>1 ?

1. x^2 >1 --> x<-1 and x>1, sufficient
2. x>-1, x can belong to (0,1),so x^2 is NOT greater than x.
and x can be >1, so x^2 IS GREATER than x
not suff
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Director
Joined: 05 Jan 2008
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21 May 2008, 05:30
A for me too.

X^2 >1 means -> x could be + or -ve but x^2 would always be +ve sufficient

stmt-2 ->x > -1, if x=0, x^2=0 this insuff.

A
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Re: Data sufficiency   [#permalink] 21 May 2008, 05:30
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