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11 May 2005, 20:37
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If Z is a positive integer, x*z=0?
1) x*z=-3x
2) x*z=3x
1) x*z=-3x
2) x*z=3x
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11 May 2005, 21:44
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a good one, i am not so sure
I would answer A
in statement 1 we know that Z is a positive integer so there is no way Z=-3, the only solution is that Z is equal to any positive number but that X=0 so XZ=0 -> suff
in statement 2, Z could be for example 3 and X could also be 3. Not suff
I would answer A
in statement 1 we know that Z is a positive integer so there is no way Z=-3, the only solution is that Z is equal to any positive number but that X=0 so XZ=0 -> suff
in statement 2, Z could be for example 3 and X could also be 3. Not suff
11 May 2005, 22:31
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Antmavel
If Z is a positive integer, x*z=0?
1) x*z=-3x
2) x*z=3x
Answer should be A, but this is one of the poorly worded question because it is not possible to have x*z=-3x = 3x without combining i and ii. to satisfy booth statement x must be o and ETS doesnot ask such question. only after combining both, we know that x = o. therefore no wonder if OA is C.
