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Math Help - Hello: I need help on this question

  1. #1
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    Hello: I need help on this question

    Zane's favorite rock group is in town this coming weekend, and his parents
    have offered to take him and a friend to the concert. Zane knows that six
    of his friends would like to go. However, at this late date, he figures that
    the chance of anyone he invites being free to go is slim. What is the
    probability that one of Zane's friends will be able to accept his invitation?

    Please help me!!!
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  2. #2
    MHF Contributor
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    Re: Hello: I need help on this question

    Hint: Find the probability that all six can't go.

    Edit: The answer to the original question depends on whether it's "exactly one" or "at least one".
    Last edited by emakarov; April 13th 2013 at 11:59 AM.
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