Jamb Mathematics 1987 Past Questions and Answers

Question 26:

• JAMB 1987

The minimum value of y in the equation y = x\(^2\) - 6x + 8 is

A. 8
B. 3
C. 7
D. -1

Question 27:

• JAMB 1987

Find the eleventh term of the progression 4, 8, 16.....

A. 2¹³
B. 2¹²
C. 2¹¹
D. 2¹⁰

Question 28:

• JAMB 1987

Three angles of a nonagon are equal and the sum of six other angles is 1110o. Calculate the size of one of the equal angles

A. 210^o
B. 150^o
C. 105^o
D. 50^o

Question 29:

• JAMB 1987

Two chords QR and NP of a circle intersect inside the circle at x. If RQP = 37o, RQN = 49o and QPN = 35o, find PRQ

A. 35^o
B. 37^o
C. 49^o
D. 59^o

Question 30:

• JAMB 1987

The sine, cosine and tangent of 210o are respectively

A. \(\frac{1}{2}\), \(\frac{\sqrt{3}}{2}\), \(\frac{\sqrt{3}}{2}\)
B. \(\frac{1}{2}\), \(\frac{\sqrt{3}}{2}\), \(\frac{\sqrt{3}}{3}\)
C. \(\frac{1}{2}\), \(\frac{\sqrt{3}}{2}\), \(\frac{\sqrt{3}}{2}\)
D. \(\frac{-1}{2}\), \(\frac{\sqrt{-3}}{2}\), \(\frac{\sqrt{3}}{3}\)