Jamb Mathematics 1979 Past Questions and Answers

Question 41:

• JAMB 1979

12 men complete a job in 9 days. How many men working t the same rate would be required to complete the job in 6 days?

A. 24
B. 18
C. 12
D. 9
E. 8

Question 42:

• JAMB 1979

For the set of numbers 2, 3, 5, 6, 7, 7, 8

A. The median is greater than the mode
B. The mean is greater than the mode
C. The mean is greater than the median
D. The median is equal to the mean
E. The mean is less than the median

Question 43:

• JAMB 1979

Simplify $\frac{1-x^2}{x-x^2}$, where x $\ne$ 0

A. $\frac{1}{x}$
B. $\frac{1-x}{x}$
C. $\frac{1+x}{x}$
D. $\frac{1}{x-1}$
E. $\frac{-x-1}{1}$

Question 44:

• JAMB 1979

A cylinder of height h and radius r is open at one end. Its surface area is

A. 2$\pi$rh
B. $\pi$r²h
C. 2$\pi$rh + $\pi$r²
D. 2$\pi$rh + 2$\pi$r²

Question 45:

• JAMB 1979

An arc of circle of radius 2cm subtends an angle of 60^o at the centre. Find the area of the sector

A. $\frac{2\pi }{3}$cm²
B. $\frac{\pi }{2}$cm²
C. $\frac{\pi }{3}$cm²
D. $\pi$cm²