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Mathematics 1991 JAMB Past Questions

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21
Find the range of values of x which satisfy the inequality \(\frac{x}{2}\) + \(\frac{x}{3}\) + \(\frac{x}{4}\) < 1
  • A. x < \(\frac{12}{13}\)
  • B. x < 13
  • C. x < 9
  • D. \(\frac{13}{12}\)
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22
Find the positive number n, such that thrice its square is equal to twelve times the number
  • A. 1
  • B. 2
  • C. 3
  • D. 4
View Answer & Discuss (1) JAMB 1991
23
What is the nth term of the progression 27, 9, 3,......?
  • A. 27\(\frac{1}{3}\) n - 1
  • B. 3n + 2
  • C. 27 + 18(n - 1)
  • D. 27 + 6(n - 1)
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24

Solve the equation (x - 2) (x - 3) = 12

  • A. 2, 3
  • B. 3, 6
  • C. -1, 6
  • D. 1, -6
View Answer & Discuss (5) JAMB 1991
25

Simplify \(\frac{\sqrt{1 + x} + \sqrt{x}}{\sqrt{1 + x} - \sqrt{x}}\)

  • A. -2x - 2\(\sqrt{x (1 + x)}\)
  • B. 1 + 2x + 2\(\sqrt{x (1 + x)}\)
  • C. \(\sqrt{x (1 + x)}\)
  • D. 1 + 2x - 2\(\sqrt{x (1 + x)}\)
View Answer & Discuss JAMB 1991
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