SOLUTION: If an urn has 5 white balls and 6 red balls and 8 green balls, what is the probability that 4 randomly selected balls contain 2 white balls and 2 green balls? (Enter answer as a de

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Question 1204158: If an urn has 5 white balls and 6 red balls and 8 green balls, what is the probability that 4 randomly selected balls contain 2 white balls and 2 green balls? (Enter answer as a decimal with at least 4 correct decimal places)

Answer by ikleyn(52894) About Me  (Show Source):
You can put this solution on YOUR website!
.

The probability is  P = %28C%5B5%5D%5E2%2AC%5B8%5D%5E2%29%2FC%5B5%2B6%2B8%5D%5E4 = %2810%2A28%29%2F3876 = 0.07224  (rounded).   ANSWER

Solved.

The formula is self-explanatory.

If you needs explanations, look on it and listen it attentively: it will tell you a whole story.