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by lauyeung » Tue Apr 15, 2008 5:02 pm
Hi,

I screenshotted this while I was reviewing my problems. Can anyone help thoroughly explain the answer!?

Thanks!
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Source: — Data Sufficiency |
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by Stuart@KaplanGMAT » Tue Apr 15, 2008 7:17 pm
We know that n is a perfect square between 3 and 99. Let's start by quickly jotting down the possibilities:

4, 9, 16, 25, 36, 49, 64, 81

(1) n is even: could be 4, 16, 36 or 64... insufficient.

(2) the cube root of n is an integer: on our list, only 64 is also a perfect cube... sufficient.

(2) is suff, (1) is insuff.. choose (b).
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by lauyeung » Wed Apr 16, 2008 8:36 pm
Wow. THANK YOU!
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by hillzheng » Wed Apr 16, 2008 11:05 pm
I will choose B
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