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15 Nov 2009, 10:30
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I think this is an error. If we plug in x < 1 and x >1 we get to different results if y =1. Stem does not state M is an interger. Am I off?
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16 Nov 2009, 01:12
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I'm sorry, I don't follow how you arrived to this conclusion. Where did you plug the values of \(X\) in?
If we take S1, we get this:
\(\sqrt{X} \gt \sqrt{Y}\)
or
\(X \gt Y\)
after we square both sides. Why would you plug in \(X \lt 1\) and \(Y =1\) in there if it says that \(X \gt Y\)? S1 is sufficient to answer the question.
Let's see what we have with S2:
\(X^2 \gt Y^2\)
I see no reason to plug \(X \lt 1\) and \(Y=1\) in here... S2 is not sufficient since plugging in X=4, Y=2 and X=-4, Y=2 produce different results while not violating S2.
I hope this helps.
If we take S1, we get this:
\(\sqrt{X} \gt \sqrt{Y}\)
or
\(X \gt Y\)
after we square both sides. Why would you plug in \(X \lt 1\) and \(Y =1\) in there if it says that \(X \gt Y\)? S1 is sufficient to answer the question.
Let's see what we have with S2:
\(X^2 \gt Y^2\)
I see no reason to plug \(X \lt 1\) and \(Y=1\) in here... S2 is not sufficient since plugging in X=4, Y=2 and X=-4, Y=2 produce different results while not violating S2.
I hope this helps.
ajonas
Archived Topic
Hi there,
Archived GMAT Club Tests question - no more replies possible.
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for the latest questions.
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Thank you for understanding, and happy exploring!
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