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(8) persons are to be seated around a circle. Between two particular persons, there must be exactly (2) persons in one direction. How many arrangements are possible?

Answer and explanation

Correct answer: (1440)

Fix one particular person; then the other particular person has (2) valid positions. Arrange the remaining (6) persons in (6!) ways.

Related tags

Circular-SeatingPositionCountingFundamental Principle Of CountingPermutations And CombinationsMathematicsClass 11 Mcq

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