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24 July, 02:07

in how many ways can 8 people be seated in a row if there are 4 men and 4 women and no 2 men or 2 women can sit next to each other?

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  1. 24 July, 04:41
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    There are 1152 ways to seat 8 people such that no two men or women are sitting together.

    Step-by-step explanation:

    In a group of 8 people there are 4 men and 4 women.

    These 8 people are to seated in a row such that no 2 men or 2 women can sit next to each other.

    That is, men and women are sitting alternatively.

    M, W, M, W, M, W, M, W

    This can happen in 2 ways because the first place can be occupied by a women.

    Compute the number of ways of seating 8 people as follows:

    The 4 men can sit in 4! ways.

    The 4 women can sit in 4! ways.

    The number of ways is: 4! * 4! * 2 = 1152

    Thus, there are 1152 ways to seat 8 people such that no two men or women are sitting together.
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