1.

A family consists of a grandfather, m sons and daughters and 2n grandchildren. 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 grand-children on either side of him. In how many ways can the family be made to sit.

Answer»

`(2n!)(m-1)!`
`(2n!)(m!)(m-1)`
`(2m!)(N!)`
NONE of the above

Answer :B


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