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lionel messi
Jul 19, 2012, 12:21 AM
A jar contains 5 red and 8 blue marbles. If 3 marbles are selected at random, what is the probability that two are red and one is blue or that one is red and two are blue?
Unknown008
Jul 19, 2012, 02:54 AM
Post your attempt at the question please.
teacherjenn4
Jul 19, 2012, 08:03 AM
Tell me what work you have done on this so far.
lionel messi
Jul 19, 2012, 10:21 PM
P(A)= [(5C2x8C1)+(5C1x8C2)] / 13C3..
Unknown008
Jul 20, 2012, 05:31 AM
Yup! :)