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# ds og 10 TH 264

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Manager
Joined: 05 Oct 2005
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ds og 10 TH 264 [#permalink]  05 Dec 2005, 10:40
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Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
Is 2x-3y<x^3?

ST 1 2x-3y=-2

ST x>2 and y>0

THANKS
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VP
Joined: 06 Jun 2004
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Re: ds og 10 TH 264 [#permalink]  05 Dec 2005, 20:03
mand-y wrote:
:) Is 2x-3y<x^3?

ST 1 2x-3y=-2

ST x>2 and y>0

THANKS

Is 2x-3y<x^3?

(1) 2x - 3y = -2 ==> -2 < x^3 ==> no info about x. Insufficient
(2) x > 2 and y > 0 ==> Sufficient
Senior Manager
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Re: ds og 10 TH 264 [#permalink]  05 Dec 2005, 22:19
Stmt 1 not suff. Since we do not know the value of x.
Stmt 2. True for any values of x and y. Hence B
VP
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