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1 December, 15:56

From a set of seven math books, nine science books, and five literature books, in how many ways can a student select two from each set?

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  1. 1 December, 19:22
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    There are 7 math books, 9 science books and 5 literature books. Student has to select 2 books from each set.

    This is a combination problem.

    Number of ways to select 2 math books from 7 books = 7C2 = 21

    Number of ways to select 2 science books from 9 books = 9C2 = 36

    Number of ways to select 2 literature books from 5 books = 5C2 = 10

    Total number of ways to select 2 books from each set = 21 x 36 x 10 = 7560 ways.

    So there are 7560 ways to select 2 books from each set of seven math books, nine science books, and five literature books
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