# 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.

**11. **\(\frac{2 – 18m^2}{1 + 3m}\)

**A.**\(2 (1 + 3m)\)**B.**\(2 (1 + 3m^2)\)**C.**\(2(1 – 3m)\)**D.**\(2(1 – 3m^2)\)

**12. **A curve is such that when y = 0, x = -2 or x = 3. Find the equation of the curve.

**A.**y = ${\mathrm{x\xb2}}^{}-5x-6$**B.**y = ${\mathrm{x\xb2}}^{}+5x-6$**C.**y = ${\mathrm{x\xb2}}^{}+x-6$**D.**y = ${\mathrm{x\xb2}}^{}-x-6$

**13. **The volume of a cylindrical tank, 10m high is 385 m2. Find the diameter of the tank. [Take π=22/7]

A. 14m

B. 10m

C. 7m

C. 5m

14. The surface area of a sphere is 792/7cm2. Find, correct to the nearest whole number, its volume. [Take π=22/7]

A. 113cm3

B. 131cm3

C. 311cm3

D. 414cm3

15. The angles of a polygon are x, 2x, 2x, (x + \(30^o\)), (x + \(20^o\)) and (x – \(10^o\)). Find the value of x

**A.**\(45^o\)**B.**\(95^o\)**C.**\(84^o\)**D.**\(85^o\)

**16. **If M and N are the points (-3, 8) and (5, -7) respectively, find |MN|

**A.**8 units**B.**11 units**C.**15 units**D.**17 units

**17. **The equation of the line through the points (4,2) and (-8, -2) is 3y = px + q, where p and q are constants. Find the value of p.

**A.**1**B.**2**C.**3**D.**9

**18. **The mean of 1, 3, 5, 7 and x is 4. Find the value of x

**A.**2**B.**4**C.**6**D.**8

**19. **

The table shows the distribution of goals scored by 25 teams in a football competition. Calculate the probability that a team selected at randon scored either 4 or 7 goals.

**A.**9/25**B.**1/5**C.**6/25**D.**$\frac{2}{}$/5

**20. **

The table shows the distribution of goals scored by 25 teams in a football competition. Calculate the probability that a team selected at random scored at most 3 goals.

**A.**3/25**B.**1/5**C.**6/25**D.**2/5