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WAEC Further Mathematics 2020 Question 14

Question 14

Sets and Logic

Given that P = {x : 1 ≤ x ≤ 6} and Q = {x : 2 < x < 10} where x are integers, find n(P ∩ Q)

  1. A.4
  2. B.6
  3. C.8
  4. D.10
Show the answer and explanation

Answer: A (4)

Explanation

P = {1, …, 6}, Q = {3, …, 9}. P ∩ Q = {3, 4, 5, 6}, so n = 4.