Sets - Jamb Mathematics Past Questions and Answers

Question 1:

• JAMB 1978

A group of market women sell at least one of yam, plantain and maize. 12 of them sell maize, 10 sell yam and 14 sell plantain. 5 sell plantain and maize, 4 sell yam and maize, 2 sell yam and plantain only while 3 sell all the three items. How many women are in the group?

A. 25
B. 19
C. 18
D. 17

Question 2:

• JAMB 2019

In a class of 50 students, 40 students offered Physics and 30 offered Biology. How many offered both Physics and Biology?

A. 42
B. 20
C. 70
D. 54

Question 3:

• JAMB 2019

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}

Question 4:

• JAMB 2018

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}

Question 5:

• JAMB 2018

The figure below is a Venn diagram showing the elements arranged within sets A,B,C,ε.
Use the figure to answer this question
What is n(A U B)1 ?

A. 2
B. 3
C. 4
D. 7