JAMB Mathematics 2008 Question 10

Question 10

Sets

If X = {n2 + 1 : n = 0, 2, 3} and Y = {n + 1 : n = 2, 3, 5}, find X∩Y.

  1. A.{1, 3}
  2. B.{5, 10}
  3. C.Φ
  4. D.{4, 6}
Show the answer and explanation

Answer: C (Φ)

Explanation

X = {1, 5, 10} and Y = {3, 4, 6}. They have no common element, so X ∩ Y is empty.