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WAEC Mathematics 1988 Question 45

Question 45

Sets

If Q = (all perfect squares less than 30) and P = (all odd numbers from 1 to 10). Find Q∩P.

  1. A.(1,4,9,16,25)
  2. B.(1,3,4,5,7,9,16,25)
  3. C.(1,3,5,7,9)
  4. D.(1,9)
  5. E.ϕ
Show the answer and explanation

Answer: D ((1,9))

Explanation

Q = {1, 4, 9, 16, 25} and P = {1, 3, 5, 7, 9}. The common elements are 1 and 9.