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20 persons we invited to a party. In how many ways can they be seated in a round table such that two particular persons sit on either side of the host?
Pack the host and the 2 particular persons in a bundle. This leaves us 18 items to arrange around the table. In the bundle the persons can arranged in 2 ways. Hence total no. of ways equals (18-1)! x 2! Solve and get the answer PS: the value is big. maybe u skipped how many seats are there around the table in the question
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