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Friday, 06 November 2026
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Mathematics Past Questions and Answers

Jamb 1983 Mathematics Questions

Question 6:
In a figure, PQR = 60o, PRS = 90o, RPS = 45o, QR = 8cm. Determine PS
  • A 2\(\sqrt{3}\)cm
  • B 4\(\sqrt{6}\)cm
  • C 2\(\sqrt{6}\)cm
  • D 8\(\sqrt{6}\)cm
  • E 8cm
View Answer & Explanation
Question 7:
Given that cos z = L , whrere z is an acute angle, find an expression for \(\frac{\cot z - \csc z}{\sec z + \tan z}\)
  • A \(\frac{1 - L}{1 + L}\)
  • B \(\frac{L^2 \sqrt{3}}{1 + L}\)
  • C \(\frac{1 + L^3}{L^2}\)
  • D \(\frac{L(L - 1)}{1 - L + 1 \sqrt{1 - L^2}}\)
View Answer & Explanation
Question 8:
If 0.0000152 x 0.042 = A x 108, where 1 \(\leq\) A < 10, find A and B
  • A A = 9, B = 6.38
  • B A = 6.38, B = -9
  • C A = -6.38, B = -9
  • D A = -9, B = -6.38
View Answer & Explanation
Question 9:
If (x + 2) and (x - 1) are factors of the expression \(Lx^{3} + 2kx^{2} + 24\), find the values of L and k.
  • A 1 = -6, k = -9
  • B 1 = -2, k = 1
  • C K = -1, 1 = -2
  • D 1 = 0, k = 1
  • E K = 0,1 = 6
View Answer & Explanation
Question 10:
Make T the subject of the equation \(\frac{av}{1 - v}\) = \(\sqrt{\frac{2v + T}{a + 2T}}\)
  • A T = \(\frac{3av}{1 - v}\)
  • B T = \(\frac{1 + v}{2a^2v^3}\)
  • C T = \(\frac{2v(1 - v)^3 - a^4v^3}{2a^3v^3 + (1 - v)^2}\)
  • D \(\frac{2v(1 - v)^3 - a^4 v^3}{2a^3v^ 3 - (1 - v)^3}\)
View Answer & Explanation