Mathematics JAMB, WAEC, NECO AND NABTEB Official Past Questions

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2227

The angle of a sector of a circle of diameter 8cm is 135°. Find the area of the sector [Take \(\pi\) = 22/7].

  • A. \(9\frac{3}{7}cm^2\)
  • B. \(12\frac{4}{7}cm^2\)
  • C. \(18\frac{6}{7}cm^2\)
  • D. \(25\frac{1}{7}cm^2\)
View Answer & Discuss WAEC 1989
2228

The table above gives the scores of a group of students in an English Language test

If a student is chosen at random from the group, what is the probability that the scored at least 6 marks?

  • A. 3/20
  • B. 1/5
  • C. 1/4
  • D. 3/10
  • E. 3/4
View Answer & Discuss WAEC 1989
2229

Find the volume of a cone of radius 3.5cm and vertical height 12cm [Take π = 22/7]

  • A. 3.4cm3
  • B. 15.5cm3
  • C. 21.0cm3
  • D. 42.0cm3
  • E. 154.0cm3
View Answer & Discuss WAEC 1989
2230

With reference to the graph above, which of the following solution sets is represented by ΔOPQ?

  • A. y ≥ x, y ≤ 0, y + x ≥ 7
  • B. y ≤ x, y ≥ 0, y + x ≤ 7
  • C. y ≥ x, y ≥ 0, y + x ≤ 7
  • D. y ≤ x, y ≤ 0, y + x ≤ 7
  • E. y ≤ x, y ≥ 0, y + x ≥ 7
View Answer & Discuss WAEC 1989
2231

In the diagram above, what is the size of angle ACB?

  • A. 40o
  • B. 50o
  • C. 60o
  • D. 80o
  • E. 100o
View Answer & Discuss WAEC 1989
2232

Simplify \(\frac{9^{-\frac{1}{2}}}{27^{\frac{2}{3}}}\)

  • A. 1
  • B. 1/3
  • C. 1/9
  • D. 1/18
  • E. 1/27
View Answer & Discuss WAEC 1989
2233

In the diagram above O is the center of the circle, if ∠PAQ = 75o, what is the value of ∠PBQ?

  • A. 15o
  • B. 75o
  • C. 105o
  • D. 150o
  • E. 210o
View Answer & Discuss WAEC 1989
2234

For a class of 30 students, the scores in a Mathematics test out of 10 marks were as follows;

4,5,7,2,3,6,5,5,8,9,5,4,2,3,7,9,8,7,7,7,3,4,5,5,2,3,6,7,7,2

What is the range of the distribution?

  • A. 2
  • B. 7
  • C. 8
  • D. 9
  • E. 10
View Answer & Discuss WAEC 1989
2235

For a class of 30 students, the scores in a Mathematics test out of 10 marks were as follows;

4,5,7,2,3,6,5,5,8,9,5,4,2,3,7,9,8,7,7,7,3,4,5,5,2,3,6,7,7,2

What is the median score?

  • A. 2
  • B. 7
  • C. 8
  • D. 9
  • E. 10
View Answer & Discuss WAEC 1989
2236

For a class of 30 students, the scores in a Mathematics test out of 10 marks were as follows;

4,5,7,2,3,6,5,5,8,9,5,4,2,3,7,9,8,7,7,7,3,4,5,5,2,3,6,7,7,2

What is the mode of the score

  • A. 3
  • B. 4
  • C. 5
  • D. 6
  • E. 7
View Answer & Discuss WAEC 1989
2237

If A = {a,b,c}, B = {a,b,c,d,e} and C = {a,b,c,d,e,f}. Find (A∪B)∩(A∪C)

  • A. {a,b,c,d}
  • B. {a,b,c,d,e}
  • C. {a,b,c,d,e,f}
  • D. {a,b,c}
  • E. Φ
View Answer & Discuss WAEC 1989
2238

What percentage of the population are married? correct to one decimal place

  • A. 14.8%
  • B. 20.4%
  • C. 30.5%
  • D. 35.2%
  • E. 36.5%
View Answer & Discuss WAEC 1989
2239

What angle represents grown up girls ? Correct to one decimal place

  • A. 37.5o
  • B. 26.7o
  • C. 25.7o
  • D. 20o
  • E. 3.75o
View Answer & Discuss WAEC 1989
2240

Solve the following equation: 6x\(^2\) – 7x – 5 = 0

  • A. x = 1/2 or x = -21/2
  • B. x = 1/3 or x = 21/2
  • C. x = 1 2/3 or x = -1/2
  • D. x = 12/3 or x = 1/2
  • E. x = 5/6 or x = -1
View Answer & Discuss WAEC 1989
2241

Calculate the surface area of a hallow cylinder which is closed at one end, if the base radius is 3.5cm and the height 8cm.[take π = 22/7]

  • A. 126.5cm2
  • B. 165cm2
  • C. 176cm2
  • D. 214.5cm2
  • E. 253.5cm2
View Answer & Discuss WAEC 1989
2242

In the diagram above, O is the center of the circle. Calculate the length of the chord AB if |OA| = 5cm, |OD| = 3cm and ∠AOD = ∠BOD

  • A. 3cm
  • B. 4cm
  • C. 5cm
  • D. 8cm
  • E. 15cm
View Answer & Discuss WAEC 1989
2243

Points X and Y are respectively 20km North and 9km East of a point O. What is the bearing of Y from X? Correct to the nearest degree

  • A. 024o
  • B. 114o
  • C. 156o
  • D. 204o
  • E. 336o
View Answer & Discuss WAEC 1989
2244

If 3\(^y\) = 243, find the value of y.

  • A. 2
  • B. 3
  • C. 4
  • D. 5
  • E. 6
View Answer & Discuss WAEC 1989
2245

If twice a certain integer is subtracted from 5 times the integer, the result is 63. Find the integer.

  • A. 21
  • B. 9
  • C. 7
  • D. 4
  • E. 3
View Answer & Discuss WAEC 1989
2246

An arc of a circle radius 7cm is 14cm long. What angle does the arc subtend at the center of circle?
[Take π = 22/7]

  • A. 25.7o
  • B. 44o
  • C. 51.43o
  • D. 98o
  • E. 114.55o
View Answer & Discuss WAEC 1989
2247

The venn diagram below shows the number of students who studied Physics, Chemistry, and Mathematics in a certain school. How many students took at least two of the three subjects?

  • A. 165
  • B. 160
  • C. 155
  • D. 135
  • E. 85
View Answer & Discuss WAEC 1989