Quantitative Reasoning

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  • #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.

    #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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