There is meeting of 20 delegates that is to be held in a hotel. In how many ways these delegates can be seated along a round table, if three particular delegates always seat together?
Answer with explanationAnswer: Option A
Total 20 persons, 3 always seat together, 17 + 1 =18 delegates can be seated in (18 -1)! Ways = 17!
And now that three can be arranged in 3! Ways.
So, 17! 3! is the correct answer.