Mathematics JAMB, WAEC, NECO AND NABTEB Official Past Questions

22

In the figure shown, PQs is a straight line. What is the value of < PRQ?

  • A. 128o
  • B. 108o
  • C. 98o
  • D. 78o
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23

In the diagram above, PQRS is a rhombus. /PR/ = 10cm and /QS/ = 24cm. Calculate the perimeter of the rhombus.

  • A. 34cm
  • B. 52cm
  • C. 56cm
  • D. 96cm
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24

In the diagram, /PQ/ = /QR/ and /PR/ = /RS/ = /SP/, calculate the side of < QRS

  • A. 150o
  • B. 120o
  • C. 90o
  • D. 60o
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25

In the diagram, < QPR = 90o. If q2 = 25 – r2. Find the value of p

  • A. 3
  • B. 4
  • C. 5
  • D. 6
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26

Find the mean deviation of these numbers 10, 12, 14, 15, 17, 19.

  • A. 2.5
  • B. 2.6
  • C. 2.7
  • D. 2.8
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27

Given the sets A = [2, 4, 6, 8] and B = [2, 3, 5, 9]. If a number is picked at random from each of the two sets, what is the probability that their difference is 6 or 7?

  • A. \(\frac{1}{256}\)
  • B. \(\frac{1}{16}\)
  • C. \(\frac{1}{8}\)
  • D. \(\frac{1}{2}\)
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28

Given the sets A = [2, 4, 6, 8] and B = [2, 3, 5, 9]. If a number is picked at random from each of the two sets, what is the probability that their product is odd?

  • A. 1
  • B. \(\frac{3}{4}\)
  • C. \(\frac{1}{4}\)
  • D. zero
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29

Given the sets A = [2, 4, 6, 8] and B = [2, 3, 5, 9]. If a number is selected at random from set B, what is the probability that the number is prime?

  • A. 1
  • B. \(\frac{3}{4}\)
  • C. \(\frac{1}{2}\)
  • D. \(\frac{1}{4}\)
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30

Solve the inequality 1 – 2x < – \(\frac{1}{3}\)

  • A. x < \(\frac{2}{3}\)
  • B. x < -\(\frac{2}{3}\)
  • C. x > \(\frac{2}{3}\)
  • D. x > -\(\frac{2}{3}\)
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31

Find the quadratic equation whose roots are c and -c

  • A. x2 - c2 = 0
  • B. x2 + 2cx = 0
  • C. x2 + 2cx + c2 = 0
  • D. x2 - 2cx + c2 = 0
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32

If p = \(\frac{1}{2}\) and \(\frac{1}{p – 1} = \frac{2}{p + x}\), find the value of x

  • A. -2\(\frac{1}{2}\)
  • B. -1\(\frac{1}{2}\)
  • C. 1\(\frac{1}{2}\)
  • D. 2\(\frac{1}{2}\)
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33

XY is a chord of circle centre O and radius 7cm. The chord XY which is 8cm long subtends an angle of 120o at the centre of the circle. Calculate the perimeter of the minor segment. [Take \(\pi = \frac{22}{7}\)]

  • A. 14.67cm
  • B. 22.67cm
  • C. 29.33cm
  • D. 37.33cm
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34

What is the length of an edge of a cube whose total surface area is X cm2 and whose total surface area is \(\frac{X}{2}\)cm3?

  • A. 3
  • B. 6
  • C. 9
  • D. 12
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35

An arc of a circle, radius 14cm, is 18.33cm long. Calculate to the nearest degree, the angle which the arc subtends at the centre of the circle. [T = \(\frac{22}{7}\)]

  • A. 11o
  • B. 20o
  • C. 22o
  • D. 75o
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36

A train travels 60km in M minutes. If its average speed is 400km per hour, find the value of M

  • A. 15
  • B. 12
  • C. 10
  • D. 9
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37

Simplify \(\frac{\log \sqrt{8}}{\log 4 – \log 2}\)

  • A. \(\frac{2}{3}\)
  • B. \(\frac{1}{2} \log 2\)
  • C. \(\frac{3}{2}\)
  • D. \(\log 2\)
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38

If x \(\alpha\) (45 + \(\frac{1}{2}y\)), which of the following is true>?

  • A. x varies directly as y
  • B. x varies inversely as y
  • C. x is partly constant and partly varies as y
  • D. x vries jointly as 45 and directly as y
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39

If \(2^n = 128\), find the value of \(2^{n – 1})(5^{n – 2})\)

  • A. 5(106)
  • B. 2(106)
  • C. 5(105)
  • D. 2(105)
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40

If cos (x + 25)o = sin 45o, find the value of x

  • A. 20
  • B. 30
  • C. 45
  • D. 60
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41

If tan x = 1, evaluate sin x + cos x, leaving your answer in the surd form

  • A. 2\(\sqrt{2}\)
  • B. \(\frac{1}{2} \sqrt{2}\)
  • C. \(\sqrt{2}\)
  • D. 2
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42

If xo is obtuse, which of the following is true?

  • A. x . 90
  • B. 180 < x < 270
  • C. x < 90
  • D. 90 < x < 180
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