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Mathematics JAMB Past Questions

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1281

If N560.70 is shared in the ratio 7 : 2 : 1, what is the smallest share?

  • A. N392.49
  • B. N56.70
  • C. N113.40
  • D. N112.14
  • E. N56.07
View Answer & Discuss (3) JAMB 1982
1282

Seven years ago, the age of a father was three times that of his son, but in six years time the age of the son will be half that of his father, representing the present ages of the father and son by x and y, respectively, the two equations relating x and y are

  • A. 3y - x = 0; 2y - x = 0
  • B. 3y - x = 14; x - 2y = 6
  • C. 3y - x =7; x - 2y = 6
  • D. 3y - x = 14; y - 2x = 6
  • E. x + 3y = 7; x = 2y = 12
View Answer & Discuss JAMB 1982
1283

The factors of 6x - 5 - x2 are

  • A. -(x + 3)(x + 2)
  • B. (x + 5)(x + 1)
  • C. (x - 5)(1 - x)
  • D. (x + 1)(x + 5)
View Answer & Discuss (2) JAMB 1982
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1284

The solution of the quadratic equation bx\(^2\) + cx + a = 0 is given by

  • A. x = b \(\pm\) \(\frac{\sqrt{b^2 - 4ac}}{2a}\)
  • B. x = c \(\pm\) \(\frac{\sqrt{b^2 - 4ab}}{2b}\)
  • C. x = -c \(\pm\) \(\frac{\sqrt{c^2 - 4ab}}{2b}\)
  • D. x = -b \(\pm\) \(\frac{\sqrt{b^2 - 4ac}}{2b}\)
View Answer & Discuss (7) JAMB 1982
1285

The graphical method of solving the equation x3 + 3x2 + 4x - 28 = 0 is by drawing the graphs of the curves

  • A. y = x3 and y = 3x2 + x - 28
  • B. y = x3 + 3x2 + 4x + 4 and the line y = \(\frac{28}{x}\)
  • C. y = x3 + 3x2 + 4x and y
  • D. y = x2 + 3x + 4 and y = \(\frac{28}{x}\)
  • E. y = x2 + 3x + 4 and line y = 28x
View Answer & Discuss (2) JAMB 1982
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