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Does 2m-3n=o? 1) m<>0 2) 6n=9n Tnx

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Manager
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Does 2m-3n=o? 1) m<>0 2) 6n=9n Tnx [#permalink] New post 25 Mar 2008, 12:26
Does 2m-3n=o?

1) m<>0
2) 6n=9n

Tnx
Director
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Re: GM prep [#permalink] New post 25 Mar 2008, 13:43
Statement 1:
Tells us m is not equal to 0 but nothing about n, so insufficient.

Statement 2:
To me it looks like statement should have been 6m=9n, which mean 2m=3n. That mean question is answered with the help of this statement alone answer B

However if it is really 6n=9n, then n=0, this statement does not tells us about m, so insufficient.

Combining both Sentence (after considering that second statement was indeed 6n=9n),
Then from 1 we know m is not zero and from 2 we have n is equal to zero. So 2m-3n will not be equal to zero.

Answer C.
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Re: GM prep [#permalink] New post 29 Mar 2008, 09:43
There is no typo in 2)

6n=9n

However, OA is B and I can't get why
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Re: GM prep [#permalink] New post 29 Mar 2008, 15:33
puma wrote:
There is no typo in 2)

6n=9n

However, OA is B and I can't get why


If OA is B, I can vouch for it that statement 2 is saying 6m=9n.
It may not be typo at your part, but may be it is printing mistake.
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Re: GM prep [#permalink] New post 29 Mar 2008, 17:38
Let's assume that it is not a typo and that statement (2) is actually 6n=9n. This would mean that n=0. If n = 0, then 2m-3(0)=0 implies that m = 0. However, in all the GMAT questions I've done, the two statement, although maybe not both necessary, at least agree with each other. In this case, statement 1 is contradicted. So I agree that it's a typo.
Re: GM prep   [#permalink] 29 Mar 2008, 17:38
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Does 2m-3n=o? 1) m<>0 2) 6n=9n Tnx

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