Mathematics 2018 Past Questions | WAEC

Study the following Mathematics past questions and answers for JAMBWAEC  NECO and Post-JAMB. Get prepared with official past questions and answers for upcoming examinations.

  1.  Simplify: \(\sqrt{108} + \sqrt{125} – \sqrt{75}\)
  • A. \(\sqrt{3} + 5\sqrt{5}\)
  • B. \(6 \sqrt{3} – 5 \sqrt{5}\)
  • C.\(6 \sqrt{3} + \sqrt{2}\)
  • D. \(6\sqrt{3} – \sqrt{2}\)

2.  Evaluate: \((64^{\frac{1}{2}} + 125^{\frac{1}{3}})^2\)

  • A. 121
  • B. 144
  • C. 169
  • D. 196

3.  Given that y varies inversely as the square of x. If x = 3 when y = 100, find the equation connecting x and y.

  • A.\(yx^2 = 300\)
  • B.\(yx^2 = 900\)
  • C.y = \(\frac{100x}{9}\)
  • D.\(y = 900x^2\)

4.  Find the value of x for which \(32_{four} = 22_x\)

  • A. three
  • B. five
  • C. six
  • D. seven

5.  Simplify; 2\(\frac{1}{4} \times 3\frac{1}{2} \div  4 \frac{3}{8}\)

 

  • A. \(\frac{5}{9}\)
  • B. 1\(\frac{1}{5}\)
  • C. 1\(\frac{1}{4}\)
  • D. 1\(\frac{4}{5}\)

6. There are 250 boys and 150 girls in a school, if 60% of the boys and 40% of the girls play football, what percentage of the school play football?

  • A. 40.0%
  • B. 42.2%
  • C. 50.0%
  • D. 52.5%

7.  If \(\log_{10}\)(6x – 4) – \(\log_{10}\)2 = 1, solve for x.

  • A. 2
  • B. 3
  • C. 4
  • D. 5
 

8.  If F = \(\frac{9}{5}\)C + 32, find C when F = 98.6

A. 30
B. 37
C. 39
D. 41

9. If y + 2x = 4 and y – 3x = -1, find the value of (x + y)

  • A. 3
  • B. 2
  • C. 1
  • D. -1

10.  If x : y : z = 3 : 3 : 4, evaluate \(\frac{9x + 3y}{6x – 2y}\)

  • A.1\(\frac{1}{2}\)
  • B.2
  • C. 2\(\frac{1}{2}\)
  • D. 3
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