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# Is xy < 0? (1) -1 < x < 2 (2) 3 < y < 5

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Math Expert
Joined: 02 Sep 2009
Posts: 58470
Is xy < 0? (1) -1 < x < 2 (2) 3 < y < 5  [#permalink]

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03 Apr 2018, 21:43
00:00

Difficulty:

15% (low)

Question Stats:

91% (00:41) correct 9% (00:43) wrong based on 41 sessions

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Is xy < 0?

(1) -1 < x < 2
(2) 3 < y < 5

_________________
Manager
Joined: 05 Feb 2016
Posts: 167
Location: India
Concentration: General Management, Marketing
WE: Information Technology (Computer Software)
Re: Is xy < 0? (1) -1 < x < 2 (2) 3 < y < 5  [#permalink]

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04 Apr 2018, 00:27
Bunuel wrote:
Is xy < 0?

(1) -1 < x < 2
(2) 3 < y < 5

two variable x,y so two eq req
from:1
single equation . insufficient

from:2
single equation . insufficient

combining both

x=-.8,y=4 then xy<0
x=0,y=3then xy=0
insufficient
E
Current Student
Joined: 07 Jan 2016
Posts: 1083
Location: India
GMAT 1: 710 Q49 V36
Re: Is xy < 0? (1) -1 < x < 2 (2) 3 < y < 5  [#permalink]

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04 Apr 2018, 00:34
Bunuel wrote:
Is xy < 0?

(1) -1 < x < 2
(2) 3 < y < 5

1 gives value of x

if x is negative y is positive - answer yes
if x is negative y is negative - answer yes

2 gives value of y

hence both 1 and 2 are indivudially not sufficient a,b,d eliminated

c/e remain

(1) -1 < x < 2
(2) 3 < y < 5

as x and y are not mentioned as integers
y is positive
x can be either + or -

(E) imo
Re: Is xy < 0? (1) -1 < x < 2 (2) 3 < y < 5   [#permalink] 04 Apr 2018, 00:34
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