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WAEC Further Mathematics 2011 Question 26

Question 26

Permutations and Combinations

In how many ways can 3 perfects be chosen out of 8 perfects?

  1. A.6
  2. B.24
  3. C.56
  4. D.336
Show the answer and explanation

Answer: C (56)

Explanation

Order does not matter, so the number is 8C3 = (8 × 7 × 6)/(3 × 2 × 1) = 56.