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JAMB Mathematics 2005 Question 48

Question 48

Permutation and Combination

How many possible ways are there of seating seven people P, Q, R, S, T, U and V at a circular table?

  1. A.360
  2. B.720
  3. C.2520
  4. D.5040
Show the answer and explanation

Answer: B (720)

Explanation

Around a circle, n people can be seated in (n − 1)! ways: 6! = 720.