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Source: — Data Sufficiency |
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by jimmiejaz » Tue Nov 25, 2008 8:47 am
From 1 we have
x-y=6
if we put x=6,y=0 we can answer No.
But if we put
x=3, y=-3 we get Yes.
Hence insuff.

From 2 we get x+y=0
or x=-y
which will always gives us a yes.
Hence IMO ans is B.
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by bacali » Wed Nov 26, 2008 7:54 am
I think set 6 which is where this came from, has too many errors...thanks
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by austin » Wed Nov 26, 2008 8:22 am
If we can definitely say that x = y or x = -y, we can answer the question.. statement 2 does this. Hence, B
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