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by ratindasgupta » Thu Aug 30, 2007 1:18 pm
Answer is D.

I) 1/x - 1/z = (z-x)/xz. Dunno if its equal to 0

II) 1/z + (z-1)/z. Working out this expression ,we get 1. True

III) z/2 + z/2. Working out this epression, we get z. True.

Answer is D.
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by magical cook » Thu Aug 30, 2007 2:22 pm
Thank you but the answer seems to be E (I, II, III)

Hmm, can anyone explain why??
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by ratindasgupta » Fri Aug 31, 2007 3:05 am
magical cook wrote:Thank you but the answer seems to be E (I, II, III)

Hmm, can anyone explain why??
For I to be true, x and z have to be of equal value. That is not stated or implied in the question.

Does anyone else have an alternate explanation?
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by kajcha » Fri Aug 31, 2007 1:17 pm
I agree with ratin.. 1 cannot be true unless x=z
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