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18 November, 16:17

If a group of distinct objects can be arranged in 120 different ways, how many objects are there?

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  1. 18 November, 18:17
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    N! = 120

    n * (n - 1) ... * 3 * 2 * 1 = 120

    5 * 4 * 3 * 2 * 1 = 120

    5! = 120

    n = 5

    Answer: There are 5 objects.
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