Mathematics 1982 Jamb Past Questions and Answers

Question 26 :

• JAMB 1982

If \(\frac{3e + f}{3f - e}\) = \(\frac{2}{5}\), find the value of \(\frac{e + 3f}{f - 3e}\)

A. \(\frac{5}{2}\)
B. 1
C. \(\frac{26}{7}\)
D. \(\frac{1}{3}\)

Question 27 :

• JAMB 1982

A world congress of mathematicians were held in Nice in 1970 with 800 people participating. There were 300 from Europe, 200 from America, 150 from Asia, 45 from Africa and 105 from Australia. Representing the above on a pie chart, the angle of the sector representing the participants from Asia is?

A. 150^o
B. 67\(\frac{1}{2}\)^o
C. 67^o
D. 135^o
E. 68^o

Question 28 :

• JAMB 1982

The diameter of a metal rod is measured as 23.40 cm to four significant figures. What is the maximum error in the measurement?

A. 0.05cm
B. 0.5cm
C. 0.045cm
D. 0.005cm
E. 0.004cm

Question 29 :

• JAMB 1982

In a regular polygon of n sides, each interior angle is 144o. Find n

A. 12
B. 11
C. 10
D. 8
E. 6F

Question 30 :

• JAMB 1982

Simplify \(\frac{3}{2x - 1}\) + \(\frac{2 - x}{x - 2}\)

A. \(\frac{2 - x}{(2x - 1)(x - 2)}\)
B. \(\frac{5 - x}{(2x - 1)(x - 2)}\)
C. \(\frac{4 - 2x}{2x - 1}\)
D. \(\frac{6 - 3x}{(2x - 1)(x - 2)}\)