If a and b are integers and a is not equal to b, is ab > : GMAT Data Sufficiency (DS)
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# If a and b are integers and a is not equal to b, is ab >

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Director
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If a and b are integers and a is not equal to b, is ab > [#permalink]

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02 Aug 2010, 02:24
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74% (01:32) correct 26% (00:19) wrong based on 26 sessions

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If a and b are integers and a is not equal to b, is ab > 0?

(1) a^b > 0
(2) a^b is a non-zero integer

(A) Statement (1) ALONE is sufficient to answer the question, but statement (2) alone is not.
(B) Statement (2) ALONE is sufficient to answer the question, but statement (1) alone is not.
(C) Statements (1) and (2) TAKEN TOGETHER are sufficient to answer the question, but NEITHER statement ALONE is sufficient.
(D) EACH statement ALONE is sufficient to answer the question.
(E) Statements (1) and (2) TAKEN TOGETHER are NOT sufficient to answer the question.
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02 Aug 2010, 02:46
Hi,

Statement 1 is not sufficient:
Example
a=2, b=4 a^b>0 and ab>0
a=-2, b=4 a^b>0 and ab<0

Statement 2 again is not sufficient since no information is given (just that a^b is a non zero integer).

Taking both statements together, again is not sufficient.

regards,
Jack
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02 Aug 2010, 05:04
Its E for me as well...
Director
Status: Impossible is not a fact. It's an opinion. It's a dare. Impossible is nothing.
Affiliations: University of Chicago Booth School of Business
Joined: 26 Nov 2009
Posts: 997
Location: Singapore
Followers: 22

Kudos [?]: 747 [0], given: 36

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02 Aug 2010, 06:38
Awesome !

jakolik wrote:
Hi,

Statement 1 is not sufficient:
Example
a=2, b=4 a^b>0 and ab>0
a=-2, b=4 a^b>0 and ab<0

Statement 2 again is not sufficient since no information is given (just that a^b is a non zero integer).

Taking both statements together, again is not sufficient.

regards,
Jack

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Re: Absolutes   [#permalink] 02 Aug 2010, 06:38
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