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8 September, 14:20

There are seven books in the Harry Potter series. Suppose you want to determine how many ways you can arrange the books on your shelf. Would you use a combination or a permutation?

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  1. 8 September, 18:00
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    7! ways

    Step-by-step explanation:

    Given that there are seven books in the Harry Potter series. Suppose you want to determine how many ways you can arrange the books on your shelf.

    Here order matters since each series will be different. Hence permutation should be used.

    The no of ways of arranging seven books is 7P7 = 7! ways
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