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# IF XY NOT EQUAL TO ZERO WHAT DOES IT MEAN : XY COULB BE

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Manager
Joined: 25 Mar 2008
Posts: 105
IF XY NOT EQUAL TO ZERO WHAT DOES IT MEAN : XY COULB BE [#permalink]

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08 Apr 2008, 11:47
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

IF XY NOT EQUAL TO ZERO

WHAT DOES IT MEAN :

XY COULB BE NEGATIVE OR POSITIVE

OR XY MUST BE POSITIVE

PLS DESCRIBE IT ?
CEO
Joined: 17 Nov 2007
Posts: 3584
Concentration: Entrepreneurship, Other
Schools: Chicago (Booth) - Class of 2011
GMAT 1: 750 Q50 V40
Re: IF XY NOT EQUAL TO ZERO ? [#permalink]

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08 Apr 2008, 11:52
"XY COULB BE NEGATIVE OR POSITIVE"
Why do you ask this question? What is the GMAT problem?
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Manager
Joined: 28 Sep 2007
Posts: 210
Re: IF XY NOT EQUAL TO ZERO ? [#permalink]

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08 Apr 2008, 11:54
Agree, it means what it means, that it is not 0 but anything else, meaning positive and negative values.
Director
Joined: 20 Feb 2008
Posts: 797
Location: Texas
Schools: Kellogg Class of 2011
Re: IF XY NOT EQUAL TO ZERO ? [#permalink]

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08 Apr 2008, 19:44
It also means neither X nor Y = 0
SVP
Joined: 04 May 2006
Posts: 1892
Schools: CBS, Kellogg
Re: IF XY NOT EQUAL TO ZERO ? [#permalink]

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08 Apr 2008, 19:54
shobuj wrote:
IF XY NOT EQUAL TO ZERO

WHAT DOES IT MEAN :

XY COULB BE NEGATIVE OR POSITIVE

OR XY MUST BE POSITIVE

PLS DESCRIBE IT ?

If you have any confusal like this, just ask!

"IF XY NOT EQUAL TO ZERO", it means that X and Y separately (you can think like that) must be anything except for ZERO. Because Either X or Y equals 0 will make XY equals ZERO.

So:
shobuj wrote:
XY COULB BE NEGATIVE OR POSITIVE

But It is not neccessary that

shobuj wrote:
OR XY MUST BE POSITIVE

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Re: IF XY NOT EQUAL TO ZERO ?   [#permalink] 08 Apr 2008, 19:54
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