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March 24, 2017

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if there are 16 marbles in a bag and 8 are red red with 6 green and 2 blue what is the probability of getting matching marbles in 2 draws from the bag

  • math - ,

    could be RR GG or BB , assuming the 1st marble is not returned

    prob(RR) = (8/16)(7/15) = 7/30
    prob(GG) = (6/16)(5/15) = 1/8
    .....

    add them up.

    I am sure you can handle the rest

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