Re: question for MIT probability class
this is along the lines of what i was trying to do. The red and white balls are meaningless.
But I dont really know how to come up with the distribution for the 6 balls. Where I started was counting up the chances that every urn has a green ball in it, which means that there must be at least one urn with both. COunting backwards in this way seems like it may take a long time.
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