DS

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DS

by f2001290 » Tue Jun 12, 2007 1:48 pm
if X>1 and Y>1, is X<Y?
(1) X^2/(XY+X)<1
(2) XY/Y^2-Y<1

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Re: DS

by Prasanna » Tue Jun 12, 2007 3:26 pm
f2001290 wrote:if X>1 and Y>1, is X<Y?
(1) X^2/(XY+X)<1
(2) XY/Y^2-Y<1
Is the answer B?

Statement (1) mentions that x/(y+1) < 1 which means x<y+1. From this there are two possibilities (given that x>1 and y>1) x=y or x<y. Hence not sufficient

Statement (2) mentions that x< y-1. This can be true only when x<y. hence sufficient.