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# GMATPrep1 - DS

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21 Apr 2008, 21:21
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Difficulty:

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Try this OA : C
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21 Apr 2008, 21:33
Maybe D?

xy is even only if x or y is even.

Let x and y are odd.

1) 5*odd-4*odd = odd - even = odd. Sufficient

2) 6*odd+7*odd = even + odd = odd. Sufficient
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Senior Manager
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21 Apr 2008, 21:42
yup. did it same way. thought it was good one.
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21 Apr 2008, 22:13
kyatin wrote:
Try this OA : C

1) tells that x is even. suff for xy to be even

2) tells that y is even. suff for xy to be even

D
Re: GMATPrep1 - DS   [#permalink] 21 Apr 2008, 22:13
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