Jamb Mathematics Past Questions and Answers

Question 751:

• JAMB 1983

Simplify \(\sqrt[3]{\frac{27a^{-9}}{8}}\).

A. \(\frac{9a^2}{2a^3}\)
B. \(\frac{3}{2a^3}\)
C. \(\frac{2}{3a^2}\)
D. \(\frac{3a^2}{2}\)

Question 752:

• JAMB 1983

PQR is the diagram of a semicircle RSP with centre at Q and radius of length 3.5cm. If QPT = 60^o. Find the perimeter of the figure PTRS. \(\pi\) = \(\frac{22}{7}\)

A. 25cm
B. 18cm
C. 36cm
D. 29cm
E. 25.5cm

Question 753:

• JAMB 1983

In a triangle PQT, QR = \(\sqrt{3}cm\), PR = 3cm, PQ = \(2\sqrt{3}\)cm and PQR = 30o. Find angles P and R

A. P = 60^o and R = 90^o
B. P = 30^o and R = 120^o
C. P = 90^o and R = 60^o
D. P = 60^o and R 60^o
E. P = 45^o and R = 105^o

Question 754:

• JAMB 1983

Find the mean of the following 24.57, 25.63, 24.32, 26.01, 25.77

A. 25.12
B. 25.30
C. 25.26
D. 25.50
E. 25.75

Question 755:

• JAMB 1983

A man drove for 4 hours at a certain speed, he then doubled his speed and drove for another 3 hours. Although he covered 600 kilometers. At what speed did he drive for the last 3 hours?

A. 120km/hr
B. 60km/hr
C. 670km/hr
D. 40km/hr