Sets - Jamb Mathematics Past Questions and Answers

Question 26:

• JAMB 1992

If x = (all prime factors of 44) and y = (all prime factors of 60), the elements of X ∪ Y and X ∩ Y respectively are

A. (2, 4, 3, 5, 11) and (4)
B. (4, 3, 5, 11) and (3, 4)
C. (2, 5, 11) and (2)
D. (2, 3, 5, 11) and (2)

Question 27:

• JAMB 1992

If U = (1, 2, 3, 6, 7, 8, 9, 10) is the universal set. E = (10, 4, 6, 8, 10) and F = {x: 1x\(^{2}\) = 2\(^{6}, x is odd}. Find (E ∩ F)', where ' means the complement of a set.

A. (0)
B. U
C. (8)
D. \(\phi\)

Question 28:

• JAMB 1992

A student has 5 courses to take from Mathematics and physics. There are 4 courses in Mathematics and 3 in Physics which he can choose his courses so that he takes exactly two courses in Physics?

A. 48
B. 12
C. 10
D. 7

Question 29:

• JAMB 1993

The shaded portion in the venn diagram is

A. X \(\cap\) z
B. X^o \(\cap\) y \(\cap\) z
C. X \(\cap\) y^o \(\cap\) z
D. X \(\cap\) y \(\cap\) z^o

Question 30:

• JAMB 1994

Given that for sets A and B, in a universal set E, A \(\subseteq\) B then A \(\cap\)(A \(\cap\) B)' is

A. A
B. \(\phi\)
C. B
D. E