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30 May 2016, 13:55
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B
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Difficulty:
25%
(medium)
Question Stats:
79% (00:58) correct
21%
(00:57)
wrong
based on 50
sessions
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Not Attempted Yet
Is r not equal to s?
(1) The sum of r and s is negative
(2) The product of r and s is negative.
(1) The sum of r and s is negative
(2) The product of r and s is negative.
30 May 2016, 19:12
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St1: r + s = -ve --> Not Sufficient as r and s may be same in value or different
St2: r * s = -ve --> r and s will have opposite signs. Sufficient
Answer: B
St2: r * s = -ve --> r and s will have opposite signs. Sufficient
Answer: B
tslaxz
Joined: 03 Aug 2015
Last visit: 16 Sep 2016
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Given Kudos: 5
Schools: INSEAD Jan '17 (II)
30 May 2016, 19:25
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(1) The sum of r and s is negative
r+s<0 => r and s could be (2, -3) or (-2, -2) -> Insufficient
(2) The product of r and s is negative.
r*s<0
If r=s, then r*s = r^2<0; So r can not be equal to s -> Sufficient
B
r+s<0 => r and s could be (2, -3) or (-2, -2) -> Insufficient
(2) The product of r and s is negative.
r*s<0
If r=s, then r*s = r^2<0; So r can not be equal to s -> Sufficient
B
