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# GMAT Prep - DS Number Props

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GMAT Prep - DS Number Props [#permalink]  30 Jun 2008, 22:36
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0% (00:00) correct 0% (00:00) wrong based on 0 sessions
Why is A not sufficient to answer question?
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Prep 1 - DS Number Properties 1.JPG [ 58.97 KiB | Viewed 353 times ]

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My GMAT Preparation: http://albertrahul.blogspot.com/search/label/GMAT

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Re: GMAT Prep - DS Number Props [#permalink]  30 Jun 2008, 22:44
albertrahul wrote:
Why is A not sufficient to answer question?

Cause if you solve that one you get the equation y^2=1 hence y could be either -1 or 1 hence insufficient
But statement 2 is sufficient and hence the ans should be B
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Re: GMAT Prep - DS Number Props [#permalink]  30 Jun 2008, 22:48
I thought of same thing too, but needed confirmation
Thanks!
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Re: GMAT Prep - DS Number Props   [#permalink] 30 Jun 2008, 22:48
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