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GMAT Prep DS Integer n between 2 and 100

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GMAT Prep DS Integer n between 2 and 100 [#permalink]

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I am pretty sure this question has been asked before but here it goes...

Q) If n is an integer between 2 and 100 and if n is also the square of an integer, what is the value of n?

a) n is even

b) The cube root if n is an integer
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Re: GMAT Prep DS Integer n between 2 and 100 [#permalink]

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New post 30 Sep 2009, 18:19
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A) n could be any even square between 2 and 100 - 4, 16, 36, 64, 100
Insufficient

B) The only number between 2 and 100 which is both a square and a cube root is 64. n=64. Sufficient.

Answer is B.
Re: GMAT Prep DS Integer n between 2 and 100   [#permalink] 30 Sep 2009, 18:19
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GMAT Prep DS Integer n between 2 and 100

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