### 20 marbles: 8 red, 7 white, 5 blue; draw 4 w/o replacement

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**Wed Jul 29, 2009 9:04 pm**I have twenty marbles in a bowl: eight are red, seven are white, and five are blue. Let's suppose I draw four marbles without replacement.

A. What is the probability that none of the four is red?

B. What is the probability that I draw at least one of each color?

A. What is the probability that none of the four is red?

B. What is the probability that I draw at least one of each color?