If x and y are integers, is x < y? (1) xy > 0 (2) : DS Archive
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# If x and y are integers, is x < y? (1) xy > 0 (2)

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If x and y are integers, is x < y? (1) xy > 0 (2) [#permalink]

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27 Oct 2005, 08:31
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If x and y are integers, is x < y?

(1) xy > 0
(2) 0<x/y<1
Current Student
Joined: 28 Dec 2004
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Location: New York City
Schools: Wharton'11 HBS'12
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27 Oct 2005, 08:35
hmm lets see...E...

is X>Y?

(1) xy>0

well x=2, y=3 xy>0, y=2, x=3, x=-2, y=-3 xy>0 Insuff

(2)0<x/y<1

well lets see if x=2 y=3 x<y if x=-2, y=-3, x/y=2/3, x>y Insuff

together Insuff
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27 Oct 2005, 08:35
GMATT73 wrote:
If x and y are integers, is x < y?

(1) xy > 0
(2) 0<x/y<1

(1) say nothing, insuff
(2) it's correct if both x and y are positive
but not for negative x and y
Ex: 0<-1/-2<1 , but -1>-2
---> insuff

1 and 2
can't assure whether both x and y are negative or positive.
insuff
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27 Oct 2005, 11:17
(1) is asking whether xy is positive. For xy, (--) and (++) can work so we need more information - insufficient.

(2) as mentioned by others, (++) and (--) can work but we need more information too - insufficient.

TOGETHER: Still insufficent because (--) and (++) can both work - E.

If the question told us that both x & y were <b>positive integers</b>, then I'd go with D.
27 Oct 2005, 11:17
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