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Is m NOT EQUAL TO n? 1) m+n<0 2) mn<0 My approach was

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Intern
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Joined: 27 Mar 2008
Posts: 25
Is m NOT EQUAL TO n? 1) m+n<0 2) mn<0 My approach was  [#permalink]

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New post 14 Jun 2008, 10:27
1
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

100% (00:44) correct 0% (00:00) wrong based on 51 sessions

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Is m NOT EQUAL TO n?


1) m+n<0
2) mn<0


My approach was

From Statement 1 : m<-n therefore yes sufficient

From Statement 2 : one of the numbers should be negative.Therefore sufficient

My answer was D

But OG says the answer is B.Please explain where i went wrong

Thanks
Peer

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Director
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Joined: 23 Sep 2007
Posts: 621
Re: OG11 DS 99  [#permalink]

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New post 14 Jun 2008, 11:19
1
statement 1: m = -1 and n = -1 OR m = -1 and n = -2, both conditions satisfy the statement, so you can't answer question.
Intern
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Re: OG11 DS 99  [#permalink]

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New post 14 Jun 2008, 11:35
For statement 2

if m=n then either both m and n are positive or both m and n are negative

in either case mn will not be less than zero ... so yes m is not equal to n

B is the right answer
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Re: Is m NOT EQUAL TO n? 1) m+n<0 2) mn<0 My approach was  [#permalink]

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New post 30 Dec 2018, 04:06
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: Is m NOT EQUAL TO n? 1) m+n<0 2) mn<0 My approach was   [#permalink] 30 Dec 2018, 04:06
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