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DS - problem.....

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Source: — Data Sufficiency |
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by iamseer » Sat Apr 24, 2010 7:32 am
It would always be helpful if you also mention the source. B'cos a lot of questions are ambiguous and one must therefore only rely on Official material of GMAT or material from very well renowned GMAT training companies.

From your question we need to find if X>Y?

From 2:
Y<X
i.e. X>Y
SUFFICIENT

From 1:
X+Y<0
therefore X<-Y
For Y=4, X=-5 --- X<-Y and X<Y
For Y=-4, X=2 --- X<-Y but X>Y
NOT SUFFICIENT

Answer is B
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by yossi » Sat Apr 24, 2010 9:53 pm
You are right... The question was taken from the Gmat Prep SoftWare.

So if I got you right - you do not use the information given in the question?
iamseer wrote:It would always be helpful if you also mention the source. B'cos a lot of questions are ambiguous and one must therefore only rely on Official material of GMAT or material from very well renowned GMAT training companies.

From your question we need to find if X>Y?

From 2:
Y<X
i.e. X>Y
SUFFICIENT

From 1:
X+Y<0
therefore X<-Y
For Y=4, X=-5 --- X<-Y and X<Y
For Y=-4, X=2 --- X<-Y but X>Y
NOT SUFFICIENT

Answer is B
Thank you very much
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by rockeyb » Sat Apr 24, 2010 10:24 pm
I agree with iamseer here , we need to check the source of this question .

Reason : the question is Yes / No question . That is we need to find if x > y if ant of the options give me answer either yes OR no we have a solution .

Question stem : w + x < 0 that means w and x both are negative OR w and x have opposite signs .


Statement (1) x + y < 0 .

again either x and y both are negative Or x and y have opposite signs . This statement dose not give us a definite answer .

Not sufficient .

Statement (2) y < x < w .

Now irrespective of what w is (positive OR negative) we can say clearly x > y .

So sufficient .

But the important point to note here is that the value of w has no use in answering the question . Had this been a value question where we need to find a specific value we can say that value of w would have played an important role .

So I guess this one of those tweaked GMAT questions .
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