Jamb Mathematics 1988 Past Questions and Answers

Question 41:

• JAMB 1988

PQR is a triangle in which PQ = 10cm and QPR = 60^oS is a point equidistant from P and Q. Also S is a point equidistant from PQ and PR. If U is the foot of the perpendicular from S on PR, find the length SU in cm to one decimal place

A. 2.7
B. 4.33
C. 3.1
D. 3.3

Question 42:

• JAMB 1988

If x and y represent the mean and the median respectively of the following set of numbers 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, find the \(\frac{x}{y}\) correct to one decimal place

A. 18
B. 15
C. 1.0
D. 5

Question 43:

• JAMB 1988

If two dice are thrown together, what is the probability of obtaining at least a score of 10?

A. \(\frac{1}{6}\)
B. \(\frac{1}{12}\)
C. \(\frac{5}{6}\)
D. \(\frac{11}{12}\)

Question 44:

• JAMB 1988

In the figure, PQRS is a circle. If chords QR and RS are equal, calculate the value of x

A. 80^o
B. 60^o
C. 45^o
D. 40^o

Question 45:

• JAMB 1988

In the figure, PQ is a parallel to ST and QRS = 40^o. Find the value of x

A. 55^o
B. 60^o
C. 65^o
D. 75^o