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# If x y, is x+y=xy? (1) (1-x)(1-y)=1 (2) x^2-y^2=x^2y-xy^2

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Manager
Joined: 06 Nov 2008
Posts: 53
If x y, is x+y=xy? (1) (1-x)(1-y)=1 (2) x^2-y^2=x^2y-xy^2  [#permalink]

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17 Nov 2008, 08:24
If x≠y, is x+y=xy?
(1) (1-x)(1-y)=1
(2) x^2-y^2=x^2y-xy^2
________________________________________________________________
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.

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Current Student
Joined: 28 Dec 2004
Posts: 3280
Location: New York City
Schools: Wharton'11 HBS'12
Re: x and y --25  [#permalink]

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17 Nov 2008, 10:18
same ere D..

(x-y)(x+y)=(x-y)xy you get x+y=xy

stmnt 1 says x+y=+xy

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Re: x and y --25 &nbs [#permalink] 17 Nov 2008, 10:18
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# If x y, is x+y=xy? (1) (1-x)(1-y)=1 (2) x^2-y^2=x^2y-xy^2

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