Jamb Mathematics 1983 Past Questions and Answers

Question 41:

• JAMB 1983

Which of the following equations represents the graph?

A. Y = 1 + 2x + 3x²
B. Y = 1 - 2x + 3x²
C. Y = 1 + 2x - 3x²
D. Y = 1 - 2x - 3x²
E. Y = 3x² + 2x - 1

Question 42:

• JAMB 1983

The figure FGHK is a rhombus. What is the value of angle X?

A. 30^o
B. 90^o
C. 150^o
D. 120^o
E. 60^o

Question 43:

• JAMB 1983

PQRS is a desk of dimensions 2m x 0.8 which is inclined at 30^o to the horizontal. Find the inclination of the diagonal PR to the horizontal

A. 30^o 35'
B. 30^o 32'
C. 15^o 36'
D. 10^o
E. 10^o 42'

Question 44:

• JAMB 1983

If O is the centre of the circle in the figure, find the value of x

A. 50
B. 260
C. 100
D. 65
E. 130

Question 45:

• JAMB 1983

PQRS isa cyclic quadrilateral which PQ = PS. PT is a tangent to the circle and PQ makes an angle of 50^o with the tangent as shown in the figure. What is the size of QRS?

A. 50^o
B. 40^o
C. 110v
D. 80^o
E. 100^o