JEE MATHEMATICS MCQ: PERMUTATIONS

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

View answer and explanation

Correct option: B

2! \times 18!

Option B (

2! \times 18!

) is correct because the host and the two persons can be considered as a single unit, and the two persons can be arranged in 2! ways.

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