Re: logic problem (fixed wording cuz i suck)
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I fully agree that the answer seems wrong. My girlfriend gave me this question and I would not believe the answer, stupid account book...
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the problem as you stated it and the answer as you gave it do not match.
unless there is a priori info on the distributions then the choices int he pairs yeild exactly the same expectation given the assumptions i made.
also, i dont know what the "cancellation" principle is but i looked it up on my most trusted math site "mathworld" and it wasn't even there!! there was Anomalous Cancellation and Cancellation but the former involves looking at tables of factors and prime #s and the latter involves taking Mods of numbers to get an equivalent answer with different bases of the Modular arithmetic.
so if mathworld doesn't list this cancellation principle, i dont think its relavent or even exhists in the world of mathematics.
Barron
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