JEE Main Mathematics question

Mathematics Permutations and Combinations JEE Main

The number of ways in which four persons be seated at a round table, so that all shall not have the same neighbours in any two arrangements is

(A)
(B)
(C)Correct
(D)

Answer: (C)

Solution

Four persons can sit round a table in ways if only rotations are treated as the same. Two arrangements give everyone the same pair of

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Question ID VK-020840