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You know how to use the multivariate hypergeometric?
Thanks! This helps a lot.
Sorry, I know this post is old - but can you give me a hint as to how you figured this problem out, bobbym? I've got a similar problem and i want to know which direction i should be thinking in.
Sorry, that is what I got too, I meant 3 whites not 4!
Its okay, I got 21
A bag has marbles of 4 colors: red, white, blue, and green. Assume that if we take four marbles out at random (without replacement), each of the following is equally likely: