SOLUTION: A jar contains 13 marbles: 5 green and 8 black. If three marbles are picked at random one by one, what is the probability that
a First is green?
b all three is green?
c they a
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Question 1120767: A jar contains 13 marbles: 5 green and 8 black. If three marbles are picked at random one by one, what is the probability that
a First is green?
b all three is green?
c they are the same color?
Answer by rothauserc(4718) (Show Source): You can put this solution on YOUR website!
(a) Probability (P) (first selected marble is green) = 5/13
:
(b) P (all three selected marbles are green) = (5/13) * (4/12) * (3/11) = 0.035
:
(c) P (all three selected marbles are black) = (8/13) * (7/12) * (6/11) = 0.1958
:
P ( all three selected marbles are of one color) = 0.035 + 0.1958 = 0.2308
:
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