Jamb Mathematics 1990 Past Questions and Answers

Question 1:

• JAMB 1990

Simplify \(\frac{4\frac{3}{4} - 6\frac{1}{4}}{4\frac{1}{5} \text{ of } 1\frac{1}{4}}\)

A. -7\(\frac{7}{8}\)
B. \(\frac{-2}{7}\)
C. \(\frac{-10}{21}\)
D. \(\frac{10}{21}\)

Question 2:

• JAMB 1990

Simplify \(\frac{4\frac{3}{4} - 6\frac{1}{4}}{4\frac{1}{5} \text{ of } 1\frac{1}{4}}\)

A. -7\(\frac{7}{8}\)
B. \(\frac{-2}{7}\)
C. \(\frac{-10}{21}\)
D. \(\frac{10}{21}\)

Question 3:

• JAMB 1990

The H.C.F. of a²bx + ab²x and a²b - b² is

A. B
B. A + b
C. B(a \(\div\) b)
D. Abx(a² - b²)

Question 4:

• JAMB 1990

Correct 241.34(3 x 10^-3)² to 4 significant figures

A. 0.0014
B. 0.001448
C. 0.0022
D. 0.002172

Question 5:

• JAMB 1990

At what rate would a sum of N100.00 deposited for 5 years raise an interest of N7.50?

A. \(\frac{1}{2}\)%
B. 2\(\frac{1}{2}\)%
C. 1.5%
D. 25%