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Source: — Data Sufficiency |
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by Suyog » Wed Nov 28, 2007 11:55 am
1. xy > 0
if both x & y are negative then ans is greater than zero
if both x & y are positive then also the ans is greater than zero
INSUFF

2. Same as 1 INSUFF

both together INSUFF.

Ans E
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by ri2007 » Wed Nov 28, 2007 12:50 pm
ans should be C

both X&Y have the same sign, and X&Z have the same sign. If X is negative even Y and Z are negative. If all 3 are negative then XYZ<0>0

so all three have to be positive
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by lawalx » Wed Nov 28, 2007 3:46 pm
i agree with ri2k7 ans shou ld be C

OA pls
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