Jamb Mathematics 1986 Past Questions and Answers

Question 41:

• JAMB 1986

A man kept 6 black, 5 brown and 7 purple shirts in a drawer. What is the probability of his picking a purple shirt with his eyes closed?

A. \(\frac{1}{7}\)
B. \(\frac{11}{18}\)
C. \(\frac{7}{18}\)
D. \(\frac{7}{11}\)

Question 42:

• JAMB 1986

The table below gives the scores of a group of students in a Mathematical test.
\(\begin{array}{c|c} Scores & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 \\ \hline Frequency & 2 & 4 & 7 & 14 & 12 & 6 & 4 & 1\end{array}\)
If the mode in m and the number of students who scored 4 or less is s. What is (s, m)?

A. (27, 4)
B. (14,4)
C. (13,4)
D. (4,4)

Question 43:

• JAMB 1986

In the diagram, PQ and RS are chords of a circle centre O which meet at T outside the circle. If TP = 24cm. TQ = 8cm and TS = 12cm, find TR.

A. 16cm
B. 14cm
C. 12cm
D. 8cm

Question 44:

• JAMB 1986

The figure is a solid with the trapezium PQRS as its uniform cross-section. Find its volume

A. 120m²
B. 576m³
C. 816m³
D. 1056m³

Question 45:

• JAMB 1986

PQ and PR are tangents from P to a circle centre O as shown in the figure. If QRP = 34^o, find the angle marked x

A. 34^o
B. 56^o
C. 68^o
D. 112^o