Jamb Mathematics 1978 Past Questions and Answers

Question 21:

• JAMB 1978

If \(3x - \frac{1}{4})^{\frac{1}{2}} > \frac{1}{4} - x \), then the interval of values of x is

A. X > \(\frac{1}{3}\)
B. X < \(\frac{1}{3}\)
C. X < \(\frac{1}{4}\)
D. X < \(\frac{9}{16}\)
E. X > \(\frac{9}{16}\)

Question 22:

• JAMB 1978

A canal has rectangular cross section of width10cm and breadth 1m. If water of uniform density 1 gm cm-3 flows through it at a constant speed of1000mm per minute, the adjacent sea is

A. 100000
B. 1000000
C. 120000
D. 30000
E. 350000

Question 23:

• JAMB 1978

A man runs a distance of 9km at a constant speed for the first 4 km and then 2 km\h faster for the rest of the distance. The whole run takes him one hour. His average speed for the first 4 km is

A. 6 km/h
B. 8 km/h
C. 9 km\h
D. 11 km\h
E. 13 km\h

Question 24:

• JAMB 1978

A pyramid is constructed on a cuboid. The figure has

A. Twelve faces
B. Thirteen vertices
C. Fourteen edges
D. Fifteen edges
E. Sixteen edges

Question 25:

• JAMB 1978

In a geometric progression, the first term is 153 and the sixth term is \(\frac{17}{27}\). The sum of the first four terms is

A. \(\frac{860}{3}\)
B. \(\frac{680}{3}\)
C. \(\frac{608}{3}\)
D. \(\frac{680}{3}\)