Mathematics JAMB, WAEC, NECO AND NABTEB Official Past Questions

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22

Which of the following quadratic equations has \(-\frac{1}{2}\) and \(\frac{3}{4}\) as its roots?

  • A. 8x2 + 11x - 3 = 0
  • B. 8x2 -11x – 3 = 0
  • C. 8x2 + 2x -3 = 0
  • D. 8x2 - 2x – 3 = 0
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23

The values of x when y = 3 are approximately

  • A. -4.7 and 1.4
  • B. -4.6 and 1.5
  • C. -3.6 and 0.4
  • D. -3.6 and 1.5
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24

Use the graph to answer the Question below
What are the roots of the equation x2 + 3x – 4 = 0?

  • A. 1, 4
  • B. -1, -4
  • C. -1, 4
  • D. -4, 1
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25

The diagram is a circle centre O. Find the value of x

  • A. 30o
  • B. 50o
  • C. 61o
  • D. 78o
  • E. 65.5\(^{\circ}\)
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26

Simplify \(\frac{2}{a+b}-\frac{1}{a-b}\)

  • A. \(\frac{3}{a+b}\)
  • B. \(\frac{a-3b}{a^2-b^2}\)
  • C. \(\frac{3a-b}{a^2 – b^2}\)
  • D. \(\frac{a-3b}{a^2+b^2}\)
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27

A boy walks 800m in 20 minutes. Calculate his average speed in km per hour

  • A. 2.4
  • B. 4
  • C. 16
  • D. 24
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28

Find the range of values of x for which\(\frac{x+2}{4}-\frac{x+1}{3}>\frac{1}{2}\)

  • A. x > 4
  • B. x > -4
  • C. x < 4
  • D. x < -4
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29

The table above gives the marks scored by a group of students in a test Use the table to answer the Question below
What is the probability of selecting a student from the group that scored 2 or 3?

  • A. \(\frac{1}{11}\)
  • B. \(\frac{5}{22}\)
  • C. \(\frac{7}{22}\)
  • D. \(\frac{6}{11}\)
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30

The table above gives the marks scored by a group of students in a test Use the table to answer the Question below
What is the median mark?

  • A. 1
  • B. 2
  • C. 3
  • D. 4
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31

In the diagram, PQRW is a circle. Line P, V and QR are produced to meet at M, where ∠WMR = 30o and |WM| = |MR| Find the value of x

  • A. 10o
  • B. 25o
  • C. 35o
  • D. 60o
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32

Given that \(\sqrt{128}+\sqrt{18}-\sqrt{K} = 7\sqrt{2}\), find K,

  • A. 8
  • B. 16
  • C. 32
  • D. 48
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33

Find the average of the first four prime numbers greater than10

  • A. 20
  • B. 19
  • C. 17
  • D. 15
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34

In the diagram, O is the centre of the circle where OS//QR and ∠SOR = 35º. Find the value of  ∠QPR.

  • A. 35o
  • B. 45o
  • C. 55o
  • D. 70o
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35

A point X is on the bearing 342o from a point Y. What is the bearing of Y from X?

  • A. 342o
  • B. 252o
  • C. 198o
  • D. 162o
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36

Find the mean deviation of 6, 7, 8, 9, 10

  • A. 1.2
  • B. 1.5
  • C. 2
  • D. 8
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37

In the diagram, KS is a tangent to the circle centre O at R and ∠ROQ = 80º. Find ∠QRS.

  • A. 90o
  • B. 80o
  • C. 50o
  • D. 40o
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38

Given that ξ = {1, 2, 3, . . . . . . ,10}, P= (x : x is prime) and Q = {y : y is odd}, find Pl∩Q

  • A. {2}
  • B. {1,9}
  • C. {315.7}
  • D. {4, 6, 8, 10}
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39

Find the sum of the roots of the equation 2x2 + 3x – 9 = 0

  • A. -18
  • B. -6
  • C. \(-\frac{9}{2}\)
  • D. \(-\frac{3}{2}\)
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40

What is the volume of a solid cylinder of diameter 7cm and height 7cm? (Take \(\pi = \frac{22}{7}\))

  • A. 38.5cm3
  • B. 77cm3
  • C. 269.5cm3
  • D. 1078cm3
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41

Factorise 27p2x2 – 48y2.

  • A. 9(3px - 4y)2
  • B. 3(3px - 4y)(3px - 4y)
  • C. 9(px - 4y)(3p x + 4y)
  • D. 3(3px -4y)(3px +4y)
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42

In the diagram, ∆XYZ is similar to ∆PRQ, |XY| = 5cm, |XZ| =3.5cm and |PR| = 8cm. Find |PQ|

  • A. 5.6 cm
  • B. 11.2cm
  • C. 11.4cm
  • D. 28.0cm
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