Mathematics 2018 Past Questions | WAEC
Study the following Mathematics past questions and answers for JAMB, WAEC NECO and Post-JAMB. Get prepared with official past questions and answers for upcoming examinations.
- 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
