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?
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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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