Questions
20 persons are invited for a party. In how many different ways can they and the host be seated at circular table, if the two particular persona are to be seated on either side of the host?
detailed solution
Correct option is B
There are total 20 + 1=21 persons. The two particular persons and the host be taken as one unit so that theseremains 21 -3+1=19 persons be arranged in round table in 18! ways, But the two persons on either sides ofthe host can themselves be arranged in 2! ways.Required number of ways = 2! x 18! = 2.18!Similar Questions
Three boys and three girls are to be seated around a circular table. Among them the boy X does not want any girl as a neighbour and girl does not want any boy as a neighbour. The number of possible arrangement is:
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