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Old 10-24-2005, 02:19 AM
pzhon pzhon is offline
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Join Date: Mar 2004
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Default Re: question for MIT probability class

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What is the probability that no urn will contain both green and black balls?

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You can ignore the colors other than green and black.

I think the easiest approach is to determine the distribution of the number of urns containing green balls. Conditioned on these cases, you can compute the probability that the black balls are in the other urns.
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