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If x<y, which of the following must be true? I. [#permalink]
 22 Jul 2008, 06:16
If x<y, which of the following must be true?
I. |x|<|y|
II. x-y<0
III. x2-y2<0
A. I only
B. II only
C. III only
D. I and II
E. II and III
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Current Student
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Re: INEQUALITY GMAT PREP [#permalink]
22 Jul 2008, 06:20
Answer is (B)
I. does not work since x=-2 and y=-1 verify x<y but not |x|<|y|
III. does not work since x=-2 and y=-1 verify x<y but not x^2-y^2<0
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SVP
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Re: INEQUALITY GMAT PREP [#permalink]
22 Jul 2008, 07:03
III. x2-y2<0 Is this supposed to be x^2 - y^2 < 0 ? or 2x - 2x < 0?
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Re: INEQUALITY GMAT PREP [#permalink]
22 Jul 2008, 08:51
I & III do not satisfy negative numbers.
B.
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Re: INEQUALITY GMAT PREP
[#permalink]
22 Jul 2008, 08:51
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