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M16#14-Moderators Pls

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Director
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M16#14-Moderators Pls [#permalink] New post 07 Jul 2009, 05:43
If a and b are integers, is \frac{a}{b} an even integer?

1. ab is odd
2. a + b is even

Posted it but then realized I understood it
OA
[Reveal] Spoiler:
A


BB/Moderators--Can we club all the explanations of Gmat Club Tests--M # wise
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Re: M16#14-Moderators Pls [#permalink] New post 07 Jul 2009, 06:11
I'm afraid I can't understand your question right.

Sorry.
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Re: M16#14-Moderators Pls [#permalink] New post 07 Jul 2009, 07:04
IMO A

1. ab is odd
Implies, both a and b are odd numbers. (In case even one of them is even, the product would also be even.)
when both numbers are odd, then a/b will also be either a odd integer or a decimal number, but can never be even integer.

Hence A is sufficient to determine.

2. a+b is even
Either both a and b are odd, or both even.
We cannot conclude that a/b would be odd or even
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Re: M16#14-Moderators Pls [#permalink] New post 07 Jul 2009, 07:53
I was proposing to create Master Thread for each Test
Its already there

pls ignore

dzyubam wrote:
I'm afraid I can't understand your question right.

Sorry.

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Re: M16#14-Moderators Pls   [#permalink] 07 Jul 2009, 07:53
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