Question

Combination permutation

Ash and Bradley don't like each other so they don't like sitting with each other. There are two circular tables, one with 4 people and one with 8 people. How many combinations ate there?

can you explain the process step by step please?

Answer 1

Bradley sits in one seat, and Ash sits in one seat.

There are six seats left.

We can then seat Bradley in five places since the seats next to Ash are prohibited.

Now six seats are open.

The remaining people can be seated in 6! ways on the table relative to Ash.

Hence, there are 5 ∙ 6! = 5 ∙ 720 = 3600 permissible seating arrangements.