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JEE Main Mathematics question

MathematicsPermutations and CombinationsJEE Main

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 persons are to be seated on either side of the host?

Answer: (B)

Solution

Treat the host together with the two particular persons on either side as one block, which can be ordered internally in ways. The block

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Question ID VK-020518