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# I took this from the Beginners forum, and I'm posting it

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GMAT Club Legend
Joined: 07 Jul 2004
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I took this from the Beginners forum, and I'm posting it [#permalink]  23 Jun 2005, 00:22
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I took this from the Beginners forum, and I'm posting it here to generate more discussion.

Is sqrt(n) > 100

1. sqrt(n+1) > 100
2. sqrt(n-1) > 100
Director
Joined: 13 Nov 2003
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Location: BULGARIA
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A) insufficient, n could be bigger or less than 10000.
B)sufficient
Director
Joined: 27 Dec 2004
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B.

A is insuff because it boils down to n > 9999 and since the stem doesnâ€™t say n is an integer, we canâ€™t assume n is at least 10000.
B is suff because n > 10001
Director
Joined: 03 Nov 2004
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One more for B

Question can be restated as is n > 10,000
From Statement 1: n > 9999 - so not sufficient
From statement 2: n > 10,001 - so sufficient
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