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Is X and Y negative ? 1.) X is negative 2.) Y is positive

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Is X and Y negative ? 1.) X is negative 2.) Y is positive [#permalink] New post 31 Jan 2008, 19:15
Is X and Y negative ?

1.) X is negative
2.) Y is positive
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Re: x and y [#permalink] New post 31 Jan 2008, 19:54
blog wrote:
Is X and Y negative ?

1.) X is negative
2.) Y is positive


odd question


1: insuff we dont know whether Y is negative

2: suff we know Y is not negative so X and Y are not both negative
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Re: x and y [#permalink] New post 31 Jan 2008, 20:35
GMATBLACKBELT wrote:
blog wrote:
Is X and Y negative ?

1.) X is negative
2.) Y is positive


odd question


1: insuff we dont know whether Y is negative

2: suff we know Y is not negative so X and Y are not both negative


so what do u think is the answer should be ?
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Re: x and y [#permalink] New post 02 Feb 2008, 13:55
I am not sure if this is a trick question or something.

How can answer be B ? Just with the information that Y is +ve how do we know if x is -ve or not. The question is asking about X "and" Y not X*Y...
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Re: x and y [#permalink] New post 02 Feb 2008, 16:57
GMATBLACKBELT wrote:
blog wrote:
Is X and Y negative ?

1.) X is negative
2.) Y is positive


odd question


1: insuff we dont know whether Y is negative

2: suff we know Y is not negative so X and Y are not both negative


here answer is E .
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Re: x and y [#permalink] New post 02 Feb 2008, 17:05
I guess I really just dont understand what the question is asking. To me B seems suff. From what I gather here is that the questions is asking "Are X and Y negative" are they both negative?

Well S2 says that Y is positive so no they aren't both negative.


What is this question really asking here?
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Re: x and y [#permalink] New post 02 Feb 2008, 17:08
GMATBLACKBELT wrote:
I guess I really just dont understand what the question is asking. To me B seems suff. From what I gather here is that the questions is asking "Are X and Y negative" are they both negative?

Well S2 says that Y is positive so no they aren't both negative.


What is this question really asking here?


i dont know what the question is asking here because m on the road as u are. i think the question is asking simultaneously for X and Y. are they both negative then the answer comes as E.
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Re: x and y [#permalink] New post 02 Feb 2008, 17:40
blog wrote:
GMATBLACKBELT wrote:
I guess I really just dont understand what the question is asking. To me B seems suff. From what I gather here is that the questions is asking "Are X and Y negative" are they both negative?

Well S2 says that Y is positive so no they aren't both negative.


What is this question really asking here?


i dont know what the question is asking here because m on the road as u are. i think the question is asking simultaneously for X and Y. are they both negative then the answer comes as E.


No I dont think the answer would be B if its asking if X and Y are negative.

Since we know one variable is positive, then we know BOTH are not negative.


But I think the question is asking if X and if Y are negative. So its essentially 2 questions in one.

What is the source of this question?
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Re: x and y [#permalink] New post 02 Feb 2008, 21:07
I don't like this question one bit ... I interpreted it as aking if both x and y were negative. Stat one just saying x is negative don't know anything about y.

Stat 2 says y is positive, so really, both can't be negative. I went with b
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Re: x and y [#permalink] New post 02 Feb 2008, 21:26
ok here is teh question is x and y negative

u can have definative answers choices
"YES"
"NO"

or u can have non definative ( insufficient) choices
"Maybe"
"One is + and one is -ve"

the idea is to find if with choices we can give the definative answer yes/no if we cannnot the choices are not correct..

With choice A we dont knwo about Y so ans are "YES"( if y is -ve) or "One is + and one is -ve" (if y is +ve) insuffi...
With choice B we dont knwo X so again the ans is "NO" ( If x is +VE) or "One is + and one is -ve" ( if X is -ve) insuffi...
Together A and B we still cant say because again the answer is "One is + and one is -ve" insuffi...

so answer is E
Re: x and y   [#permalink] 02 Feb 2008, 21:26
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