Mathematics 1992 Jamb Past Questions and Answers

Question 6 :

• JAMB 1992

Simplify \(\frac{(1.25 \times 10^{-4}) \times (2.0 \times 10^{-1})}{(6.25 \times 10^5)}\)

A. 4.0 x 10^-3
B. 5.0 x 10^-2
C. 2.0 x 10^-1
D. 5.0 x 10^-3

Question 7 :

• JAMB 1992

Simplify 5\(\sqrt{18}\) - 3\(\sqrt{72}\) + 4\(\sqrt{50}\)

A. 17\(\sqrt{4}\)
B. 4\(\sqrt{17}\)
C. 17\(\sqrt{2}\)
D. 12\(\sqrt{4}\)

Question 8 :

• JAMB 1992

If x = 3 - \(\sqrt{3}\), find x² + \(\frac{36}{x^2}\)

A. 9
B. 18
C. 24
D. 27

Question 9 :

• 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 10 :

• 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. \(\phi\)