GEOMETRY AND TRIGONOMETRY - Jamb Mathematics Past Questions and Answers

Question 261:

• JAMB 1987

Find the least length of a rod which can be cut into exactly equal strips, each of either 40cm or 48cm in length

A. 120cm
B. 240cm
C. 360cm
D. 480cm

Question 262:

• JAMB 1987

A rectangular lawn has an area of 1815 square yards. if its length is 50 meters, find its width in meters given that 1 metre equals 1.1 yards

A. 39.93
B. 35.00
C. 33.00
D. 30.00

Question 263:

• JAMB 1987

A train moves from P to Q at an average speed of 90km/h and immediately returns from Q to P through the same route at an average speed of 45km/h. Find the average speed for the entire journey

A. 55.00km/h
B. 60.00km/h
C. 67.50km\h
D. 75.00km\h

Question 264:

• JAMB 1987

If the length of a square is increased by 20% while while its width is decreased by 20% to form a rectangle, what is the ratio of the area of the rectangle to the area of the square?

A. 6 : 5
B. 25 : 24
C. 5 : 6
D. 24 : 25

Question 265:

• JAMB 1987

An (n - 2)² sided figure has n diagonals. Find the number n diagonals for 25-sided figure

A. 7
B. 8
C. 9
D. 10