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m ath

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Use the formula nCr to solve

Of the 100 people in the U.S. senate, 18 served on the Foreign relations Committee. How many ways are there to select Senate members for this committee (assuming party affiliation is not a factor in the selection)

  • m ath - ,

    aren't you just choosing 18 from 100 ?
    so C(100,18) = huge!!

    (appr 3.066 x 10^19)

  • m ath - ,

    nCr
    100C18
    =3.06645108E19
    From a T1-83 calculator
    Type
    100, then MATH,CHOOSE PRB,then scroll
    down to number 3.
    Enter.

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