Jamb Mathematics 1980 Past Questions and Answers

Question 11:

• JAMB 1980

A solid cylinder of radius 3cm has a total surface area of 36\(\pi\)cm2. Find its height

A. 2cm
B. 3cm
C. 4cm
D. 5cm
E. 6cm

Question 12:

• JAMB 1980

The ratio of the areas of similar triangles is necessarily equal to

A. The ratio of the corresponding sides
B. The ratio of the squares of corresponding sides
C. The ratio of the corresponding heights of the triangles
D. Half the ratio of the corresponding heights of the triangles
E. The ratio of the corresponding bases to the heights of the triangles

Question 13:

• JAMB 1980

P and Q are fixed points and X is a variable point which moves so that angle PXQ = 45o. What is the locus of x?

A. A pair of straight lines parallel to PQ
B. The perpendicular bisector of PQ
C. An arc of a circle passing through P and Q
D. A circle with diameter PQ
E. The bisector of angle PXQ

Question 14:

• JAMB 1980

A man and his wife went to buy an article costing N400. The woman had 10% of the cost and the man 40% of the remainder. How much did they have altogether?

A. N216
B. N200
C. N184
D. N144
E. N100

Question 15:

• JAMB 1980

Simplify \(\frac{log_{10}8}{log_{10}4}\)

A. Log10²
B. Log10⁴
C. \(\frac{3}{2}\)
D. 2
E. None of the above