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Discussion :: Permutation and Combination

  1.  

    In how many ways can a group of 5 men and 2 women be made out of a total of 7 men and 3 women?
    2. A.

    63
    B.

    90
    C.

    126
    D.

    45
    E.

    135

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    Answer : Option A

    Explanation :

        Required   number of ways  =   (7C5 x 3C2) = (7C2 x 3C1) =[\( \frac { 7*6 } { 2*1 }\)x3]=63

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