On a circular table having 16 chairs?
Explanation:
Number of ways of seating n people around a circular table is (n – 1)!.
Since initially all the chairs are similar, the first person can be seated in only 1 way.
Once the first person is seated, all other 15 chairs are different, hence 15 people can be seated in 15! ways.
Hence the required answer = (16 – 1)! = 15!
Hence, option (b).
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