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Friday, 14 August 2026
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Mathematics Past Questions and Answers

Topic: Types of sets

Jamb Mathematics Questions - Types of sets

Question 1:
If the universal set μ = {x : 1 ≤ x ≤ 20} and
A = {y : multiple of 3}
B = |z : odd numbers}
Find A ∩ B
  • A {1, 3, 6}
  • B {3, 5, 9, 12}
  • C {3, 9, 15}
  • D {2, 3, 9}
View Answer & Explanation
Question 2:
Which one of the following gives the members of the set A1 n B n C?
  • A Φ
  • B {s}
  • C {t, u}
  • D {y, z}
View Answer & Explanation
Question 3:
If the universal set μ = {x : 1 ≤ x ≤ 20} and
A = {y : multiple of 3}
B = |z : odd numbers}
Find A ∩ B
  • A {1, 3, 6}
  • B {3, 5, 9, 12}
  • C {3, 9, 15}
  • D {2, 3, 9}
View Answer & Explanation
Question 4:
X and Y are two sets such that n(X) = 15, n(Y) = 12 and n{X ∩ Y} = 7. Find ∩{X ∪ Y}
  • A 21
  • B 225
  • C 15
  • D 20
View Answer & Explanation
Question 5:
Given that S and T are sets of real numbers such that S = {x : 0 \(\leq\) x \(\leq\) 5} and T = {x : − 2 < x < 3} Find S \(\cup\) T
  • A −3 < x < \(\leq\)3
  • B −2 < x < \(\leq\)5
  • C 2 < x < \(\geq\) −5
  • D −1 < x \(\geq\) \(\leq\)2
View Answer & Explanation