Search SchoolNGR

Monday, 09 November 2026
Register . Login

Mathematics Past Questions and Answers

Jamb 1985 Mathematics Questions

Question 31:
Without using table, calculate the value of 1 + sec2 30o
  • A 2\(\frac{1}{3}\)
  • B \(\frac{2}{15}\)
  • C \(\frac{5}{3}\)
  • D 3\(\frac{1}{2}\)
View Answer & Explanation
Question 32:
What is the probability that a number chosen at random from the intergers between 1 and 10 inclusive is either a prime or a multiple of 3?
  • A \(\frac{7}{10}\)
  • B \(\frac{3}{5}\)
  • C \(\frac{4}{5}\)
  • D \(\frac{3}{10}\)
View Answer & Explanation
Question 33:
Find the area of a regular hexagon inscribed in a circle of radius 8cm
  • A 16\(\sqrt{3}\) cm<sup style='font-size: smaller;'>3</sup>
  • B 96\(\sqrt{3}\) cm<sup style='font-size: smaller;'>3</sup>
  • C 192\(\sqrt{3}\) cm<sup style='font-size: smaller;'>3</sup>
  • D 16\(\sqrt{3}\) cm<sup style='font-size: smaller;'>2</sup>
  • E 33cm<sup style='font-size: smaller;'>2</sup>
View Answer & Explanation
Question 34:
If cos \(\theta\) = \(\frac{\sqrt{3}}{2}\) and \(\theta\) is less than 90o. Calculate \(\frac{\cot(90 - \theta)}{sin^2\theta}\)
  • A \(\frac{4}{\sqrt{3}}\)
  • B \(4 \sqrt{3}\)
  • C \(\sqrt{\frac{3}{2}}\)
  • D \(\frac{1}{\sqrt{3}}\)
  • E \(\frac{2}{\sqrt{3}}\)
View Answer & Explanation
Question 35:
A solid sphere of radius 4cm has a mass of 64kg. What will be the mass of a shell of the same metal whose internal and external radii are 2cm and 3cm respectively?
  • A 5kg
  • B 16kg
  • C 19kg
  • D 6kg
View Answer & Explanation