Mathematics, 12.07.2019 03:00, animexcartoons209

In how many ways can 8 people be seated in a row if: (a) there are no restrictions on the seating arrangement? (b) persons a and b don't want to seat together? (c) there are 4 men and 4 women and no 2 men or 2 women can sit next to each other? (d) there are 4 married couples and each couple must sit together?

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