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math

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Assume that a committee consists of 12 people including the chairperson and that the chairperson must select a committee of 3 people from the other 11 members of the committee.

In how many ways can this be done?

  • math -

    There are 12 ways to pick a chairman, and then we have to choose 3 of the remaining 11

    number of ways = 12*C(11,3)
    = 12(165) = 1980

  • math -

    i tried that already and its not the right answer :(..

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