Quantitative Reasoning

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  • PE2.19
  • April 9, 2015 at 1:36 pm #30097

    Ezra Halleck
    Participant

    19) Three coins are tossed. Find the probability that at least one coin lands heads up. You must use complement to get credit for this problem.

    April 15, 2015 at 8:29 pm #30172

    Meizhu Deng
    Participant

    p(at least one coin lands heads up)=1-p(all tails up)=1-1/8=7/8

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