SOLUTION: A bag contains 8 red, 6 white, and 7 blue marbles. Find the probability of picking 3 blue marbles if each marble is returned to the bag before the next marble is picked.

Algebra ->  Probability-and-statistics -> SOLUTION: A bag contains 8 red, 6 white, and 7 blue marbles. Find the probability of picking 3 blue marbles if each marble is returned to the bag before the next marble is picked.       Log On


   

Question 1152617: A bag contains 8 red, 6 white, and 7 blue marbles. Find the probability of picking 3 blue marbles if each marble is returned to the bag before the next marble is picked.
Answer by ikleyn(52847) About Me  (Show Source):
You can put this solution on YOUR website!
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At each picking, the probability to get a blue marble is  3%2F%288%2B6%2B7%29 = 3%2F21 = 1%2F7.


Therefore, the answer to the problem's question is  %281%2F7%29%5E3 = 1%2F7%5E3 = 0.002915.