In how many different ways can 4 married couples seat themselves around a circular table if (i) Spouses sit opposite each other? (ii) Men and women alternate?
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Solution
4 Married couples That is 8 people
Second women can be placed in 6 ways and her husband in 1 way.
Third women can be placed in 4 ways and her husband in 1 way.
Fourth women can be placed in 2 ways and her husband in 1 way.