Question

Mathematics (11)

A family consists of a grandfather, m sons and daughters and 2n grand children. They are to be seated in a row for dinner. The grand children wish to occupy the n seats at each end and the grandfather refuses to have a grand children on either side of him. In how many ways can the family be made to sit.

(2n)! m! (m - 1)

(2n)! m! m

(2n)! (m –1)! (m - 1)

(2n – 1)! m! (m-1)

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Correct Answer: A ((2n)! m! (m - 1)) A

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