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Posted by on Thursday, November 19, 2009 at 11:49am.

Three coins are tossed. Find the probability that no more than one coin lands heads up.

  • math - , Thursday, November 19, 2009 at 12:20pm

    so you want 0 heads or 1 head

    ttt ---> 1 way
    tth
    tht
    htt ---> 3 ways

    so prob(of stated event) = 4/8 = 1/2

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