Mathematics JAMB, WAEC, NECO AND NABTEB Official Past Questions

1240

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. \(\frac{9}{25}\)
  • B. \(\frac{1}{5}\)
  • C. \(\frac{6}{25}\)
  • D. \(\frac{2}{5}\)
View Answer & Discuss WAEC 2018
1241

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

  • A. 2
  • B. 4
  • C. 6
  • D. 8
View Answer & Discuss WAEC 2018
1242

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
View Answer & Discuss WAEC 2018
1243

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
View Answer & Discuss WAEC 2018
1244

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. \(85^o\)
View Answer & Discuss WAEC 2018
1245

The surface area of a sphere is \(\frac{792}{7} cm^2\). Find, correct to the nearest whole number, its volume. [Take \(\pi = \frac{22}{7}\)]

  • A. 113\(cm^3\)
  • B. 131\(cm^3\)
  • C. 311\(cm^3\)
  • D. 414\(cm^3\)
View Answer & Discuss WAEC 2018
1246

The volume of a cylindrical tank, 10m high is 385 m\(^2\). Find the diameter of the tank. [Take \(\pi = \frac{22}{7}\)]

  • A. 14m
  • B. 10m
  • C. 7m
  • D. 5m
View Answer & Discuss WAEC 2018
1247

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

  • A. y = \(x^2 - 5x - 6\)
  • B. y = \(x^2 + 5x - 6\)
  • C. y = \(x^2 + x - 6\)
  • D. y = \(x^2 - x - 6\)
View Answer & Discuss WAEC 2018
1248

Simplify; \(\frac{2 – 18m^2}{1 + 3m}\)

  • A. \(2 (1 + 3m)\)
  • B. \(2 (1 + 3m^2)\)
  • C. \(2(1 - 3m)\)
  • D. \(2(1 - 3m^2)\)
View Answer & Discuss WAEC 2018
1249

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

 

  • A. 1\(\frac{1}{2}\)
  • B. 2
  • C. 2\(\frac{1}{2}\)
  • D. 3
View Answer & Discuss WAEC 2018
1250

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

 

  • A. 3
  • B. 2
  • C. 1
  • D. -1
View Answer & Discuss WAEC 2018
1251

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

  • A. 30
  • B. 37
  • C. 39
  • D. 41
View Answer & Discuss WAEC 2018
1252

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

  • A. 2
  • B. 3
  • C. 4
  • D. 5
View Answer & Discuss WAEC 2018
1253

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%
View Answer & Discuss WAEC 2018
1254

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\(\frac{4}{5}\)
View Answer & Discuss WAEC 2018
1255

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

 

  • A. three
  • B. five
  • C. six
  • D. seven
View Answer & Discuss WAEC 2018
1256

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. \(y = 900x^2\)
View Answer & Discuss WAEC 2018
1257

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

  • A. 121
  • B. 144
  • C. 169
  • D. 196
View Answer & Discuss WAEC 2018
1258

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. \(6\sqrt{3} - \sqrt{2}\)
View Answer & Discuss WAEC 2018
1259

Add 54 \(_{eight}\) and 67\(_{eight}\) giving your answers in base eight

  • A. 111
  • B. 121
  • C. 123
  • D. 143
View Answer & Discuss JAMB 2018
1260

From a point R, 300m north of P, a man walks eastwards to a place; Q which is 600m from P. Find the bearing of P from Q correct to the nearest degree

  • A. 026\(^o\)
  • B. 045\(^o\)
  • C. 210\(^o\)
  • D. 240\(^o\)
View Answer & Discuss JAMB 2018