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WAEC Further Mathematics 2021 Question 8

Question 8

Permutations and Combinations

In how many ways can 8 persons be seated on a bench if only three seats are available?

  1. A.100
  2. B.125
  3. C.336
  4. D.427
Show the answer and explanation

Answer: C (336)

Explanation

Seating order matters and a person can't sit twice: ⁸P₃ = 8 × 7 × 6 = 336.