Mathematics 1989 Jamb Past Questions and Answers

Question 11 :

• JAMB 1989

Simplify \(4 - \frac{1}{2 - \sqrt{3}}\)

A. 2\(\sqrt{3}\)
B. -2 - \(\sqrt{3}\)
C. -2 + \(\sqrt{3}\)
D. 2 - \(\sqrt{3}\)

Question 12 :

• JAMB 1989

Find p in terms of q if \(\log_{3} p + 3\log_{3} q = 3\)

A. (\(\frac{3}{q}\))³
B. (\(\frac{q}{3}\))^{\(\frac{1}{3}\)}
C. (\(\frac{q}{3}\))³
D. (\(\frac{3}{q}\))^{\(\frac{1}{3}\)}

Question 13 :

• JAMB 1989

What are the values of y which satisfy the equation \(9^{y} - 4 \times 3^{y} + 3 = 0\) ?

A. -1 and 0
B. -1 and 1
C. 1 and 3
D. 0 and 1

Question 14 :

• JAMB 1989

Make R the subject of the fomula S = \(\sqrt{\frac{2R + T}{2RT}}\)

A. R = \(\frac{T}{(TS^2 + 1)}\)
B. R = \(\frac{T}{2(TS^2 - 2)}\)
C. R = \(\frac{T}{2(TS^2 + 1)}\)
D. R = \(\frac{R}{2(TS^2 + 1)}\)

Question 15 :

• JAMB 1989

The cost of dinner for a group of students is partly constant and partly varies directly as the number of students. If the cost is N74.00 when the number of is 20 and N96.00 when the number is 30, find the cost when there are 15 students

A. N68.50
B. N63.00
C. N60.00
D. N52.00