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Question

In how many ways can a party of 4 men and 4 women be seated at a circular table so that no two women are adjacent?

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Solution

The 4 men can be seated at the circular table such that there is a vacant seat between every pair of men.

The number of ways in which these 4 men can be seated at the circular table = 3 !=6.

Now, the 4 vacant seats may be occupied by 4 women in 4P4=4 !=24 ways.

the required number of ways = (6×24)=144.


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