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Friday, 06 November 2026
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Mathematics Past Questions and Answers

Jamb 1984 Mathematics Questions

Question 21:
If f(x) = 2(x - 3)\(^2\) + 3(x - 3) + 4 and g(y) = \(\sqrt{5 + y}\), find g [f(3)] and f[g(4)].
  • A 3 and 4
  • B -3 and 4
  • C -3 and -4
  • D 3 and -4
  • E 0 and 5
View Answer & Explanation
Question 22:
The quadratic equation whose roots are 1 - \(\sqrt{13}\) and 1 + \(\sqrt{13}\) is
  • A X<sup style='font-size: smaller;'>2</sup> + (1 - \(\sqrt{13}\)x + 1 + \(\sqrt{13}\) = 0
  • B X<sup style='font-size: smaller;'>2</sup> - 2x - 12 = 0
  • C X<sup style='font-size: smaller;'>2</sup> - 2x + 12 = 0
  • D X<sup style='font-size: smaller;'>2</sup> + 12 + 2x<sup style='font-size: smaller;'>2</sup> = 0
View Answer & Explanation
Question 23:
Find a factor which is common to all three binomial expressions 4a2 - 9b2, 8a3 + 27b3, (4a + 6b)2
  • A 4a + 6b
  • B 4a - 6b
  • C 2a + 3b
  • D 2a - 3b
  • E None
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Question 24:
If (x - 2) and (x + 1) are factors of the expression x3 + px2 + qx + 1, what is the sum of p and q
  • A 9
  • B -3
  • C 3
  • D \(\frac{17}{3}\)
  • E \(\frac{2}{3}\)
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Question 25:
A cone is formed by bending a sector of a circle having an angle of 210o. Find the radius of the base of the cone if the diameter of the circle is 12cm.
  • A 12cm
  • B 7.00cm
  • C 1.75cm
  • D 21cm
  • E 3.50cm
View Answer & Explanation