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A store sells clothes for men. It has 3 kinds of jackets, 7 kinds of shirts, and 5 kinds of pants. Find the number ofways a person can buy: (a) one of the items; (b) one of each of the three kinds of clothes.

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  1. number(one of the items):
    since there are 15 items , wouldn't that just be 15 ??

    number of 3 kinds of clothing =3*7*5 = 105
    or
    C(3,1)*C(7,1)*C(5,1) = 3*7*5 = 105

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