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9 September, 00:44

A circular, rotating, serving tray has 7 different desserts around its circumference. In how many different ways can all the desserts be arranged on the circular tray?

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  1. 9 September, 00:49
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    If there are n different things in a circular arrangement, the number of ways of arranging them is (n - 1) !

    The number of ways the desserts can be arranged on the circular tray is:

    (7 - 1) ! = 6 * 5 * 4 * 3 * 2 * 1 = 720 ways
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