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Is xy < 0?

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Joined: 02 Sep 2009
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Is xy < 0?  [#permalink]

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New post 14 Jan 2017, 09:00
3
2
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

49% (00:50) correct 51% (00:48) wrong based on 112 sessions

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Posts: 6967
Re: Is xy < 0?  [#permalink]

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New post 14 Jan 2017, 10:03
Bunuel wrote:
Is xy < 0?

(1) xy is not a positive integer.
(2) xy is not a negative integer.


Hi..
Few points to remember while dealing with numbers and variable..
1) a variable can be any of the three - positive, negative and ZERO..
2) a variable can be integer or non integer unless specified


Now let's see the statements..

(1) xy is not a positive integer.
xy can be positive non integer OR negative number OR 0..
So answer can be YES if negative number otherwise NO..
Insufficient

(2) xy is not a negative integer
xy can be negative non integer OR positive number OR 0..
So answer can be YES if negative non integer otherwise NO..
Insufficient

Combined..
It can be positive noninteger or negative noninteger or 0..
Insufficient

E
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Re: Is xy < 0?  [#permalink]

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New post 14 Jan 2017, 11:01
E

1.) XY is not positive integer.
Possible values are -ve integer, 0 , +ve/-ve decimal .
Insufficient

2.) XY is not negative integer.
Possible values are +ve integer, 0 , +ve/-ve decimal .
Insufficient

Comsidering both 1+2
Possible values are 0 , +ve/-ve decimal .
Insufficient

Hence E

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Re: Is xy < 0?  [#permalink]

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New post 14 Jan 2017, 23:23
stmt-1 : xy can be either -ve Number or +ve fraction or zero. insuff.

stmt-2 : xy can be either +ve Number or -ve fraction or zero. insuff.

If we combine the two - xy can be either zero or +ve/-ve fraction. hence xy cab be <0 or >0 or =0. Insuff.

Answer should be E.
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Re: Is xy < 0?  [#permalink]

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New post 02 Mar 2018, 01:18
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: Is xy < 0? &nbs [#permalink] 02 Mar 2018, 01:18
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