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    taderocher's Avatar
    taderocher Posts: 1, Reputation: 1
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    #1

    Sep 19, 2010, 11:21 AM
    conditional probability
    a box contains 2 red and 3 blue marbles. Find the probaility that if 2 marbles are drawn at random 1 is red and 1 is blue (without replacement)
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Sep 20, 2010, 05:50 AM



    What is the probability of picking any two balls?
    What is the probability of picking a red and a blue ball?

    Find those, use this in the formula and you'll be done. Post what you get! :)
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