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# If x and y are positive, is (x)Power3 > y? (1) Sqrt(x

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Senior Manager
Joined: 05 Jun 2008
Posts: 294
If x and y are positive, is (x)Power3 > y? (1) Sqrt(x [#permalink]

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15 Sep 2008, 08:35
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If x and y are positive, is (x)Power3 > y?
(1) Sqrt(x )> y
(2) x > y
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
Senior Manager
Joined: 09 Oct 2007
Posts: 460
Re: DS - GMAT Prep [#permalink]

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15 Sep 2008, 08:49
E for me:

1) If x^2 = 4 and y = 1, answer is yes, but if x^2 = .25 and y = .24 answer is no. INSUFF.
SVP
Joined: 17 Jun 2008
Posts: 1507
Re: DS - GMAT Prep [#permalink]

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17 Sep 2008, 23:32
E.

Use of fraction, +ve and -ve numbers will clearly show this.
Re: DS - GMAT Prep   [#permalink] 17 Sep 2008, 23:32
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