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WAEC Mathematics 2024 Question 2

Question 2

Sets

Given that P = {p: 1 < p < 20}, where p is an integer and R = {r: 0 ≤ r ≤ 25, where r is a multiple of 4}. Find P ∩ R.

  1. A.{4, 8, 10, 16}
  2. B.{4, 8, 12, 16}
  3. C.{4, 8, 12, 16, 20}
  4. D.{4, 8, 12, 16, 20, 24}
Show the answer and explanation

Answer: B ({4, 8, 12, 16})

Explanation

R = {0, 4, 8, 12, 16, 20, 24}. The members that are also between 1 and 20 (not including 20) are 4, 8, 12 and 16.