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There are 10 persons among whom two are ...

There are 10 persons among whom two are brothers. The total number of ways in which these persons can be seated around a round table so that exactly one person sits between the btothers, is equal to:

A

a) `2! xx 7!`

B

b) `2! xx 8!`

C

c) `3! xx 7!`

D

d) `3! xx 8!`

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