Is x>3? : GMAT Data Sufficiency (DS)
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# Is x>3?

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Intern
Joined: 04 Apr 2012
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07 Jul 2012, 17:44
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35% (medium)

Question Stats:

73% (02:01) correct 27% (00:54) wrong based on 37 sessions

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Is x >3

(1) (x-1)^2 > 4

(2) (x-1)^2 > 9
[Reveal] Spoiler: OA

Last edited by Bunuel on 08 Jul 2012, 02:27, edited 1 time in total.
Edited the question and added the OA.
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08 Jul 2012, 02:30
Is x >3

(1) (x-1)^2 > 4 --> $$x-1<-2$$ or $$x-1>2$$ --> $$x<-1$$ or $$x>3$$. Not sufficient.

(2) (x-1)^2 > 9 --> $$x-1<-3$$ or $$x-1>3$$ --> $$x<-2$$ or $$x>4$$. Not sufficient.

(1)+(2) Intersection of the ranges from (1) and (2) gives: $$x<-2$$ or $$x>4$$, so $$x$$ may or may not be greater than 3. Not sufficient.

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Re: Is x>3?   [#permalink] 08 Jul 2012, 02:30
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