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In how many ways can 15 members of a cou...

In how many ways can 15 members of a council sit along a circular table, when the secretary is to sit on one side of the chairman and the deputy secretary on the other side?

Text Solution

Verified by Experts

The correct Answer is:
`12!xx2`
Let the secretary A sit on one side of chairman B and deputy secretary C sit on other side of chairman. Then we have to arrange 12 persons and one grup ABC in a circle.
So, total number of arrangements `=2xx12!`
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