Mathematics JAMB, WAEC, NECO AND NABTEB Official Past Questions

1198

Solve: – \(\frac{1}{4}\) < \(\frac{3}{4}\) (3x – 2) < \(\frac{1}{2}\)

  • A. -\(\frac{5}{9}\) < x <\(\frac{8}{9}\)
  • B. -\(\frac{8}{9}\) < x <\(\frac{7}{9}\)
  • C. -\(\frac{8}{9}\) < x <\(\frac{5}{9}\)
  • D. -\(\frac{7}{9}\) < x <\(\frac{8}{9}\)
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1199

One factor of \(7x^2 + 33x – 10\) is

  • A. 7x + 5
  • B. x - 2
  • C. 7x - 2
  • D. x - 5
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1200

A sum of N18,100 was shared among 5 boys and 4 girls with each boy taking N20.00 more than each girl. Find a boy’s share.

  • A. N1,820.00
  • B. 2,000.00
  • C. N2,020.00
  • D. N2,040.00
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1201

Solve the equation: \(\frac{1}{5x} + \frac{1}{x}\)= 3

  • A. \(\frac{1}{5}\)
  • B. \(\frac{2}{5}\)
  • C. \(\frac{3}{5}\)
  • D. \(\frac{4}{5}\)
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1202

If x = \(\frac{2}{3}\) and y = – 6, evaluate xy – \(\frac{y}{x}\)

  • A. 0
  • B. 5
  • C. 8
  • D. 9
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1203

Given that a = log 7 and b = \(\log\) 2, express log 35 in terms of a and b.

  • A. a + b + 1
  • B. ab - 1
  • C. a - b + 1
  • D. b - a + 1
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1204

If M = {x : 3 \(\leq\)  x < 8} and N = {x : 8 <  x \(\leq\) 12}, which of the following is true?

i. 8 \(\in\) M \(\cap\) N

ii. 8 \(\in\) M \(\cup\) N

iii. M \(\cap\) N = \(\varnothing\)

  • A. iii only
  • B. i and ii
  • C. ii and iii only
  • D. i, ii and iii
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1205

The ages of Tunde and Ola are in the ratio 1:2. If the ratio of Ola’s age to Musa’s age is 4:5, what is the ratio of Tunde’s age to Musa’s age?

  • A. 1 : 4
  • B. 1 : 5
  • C. 2 : 5
  • D. 5 : 2
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1206

Evaluate \(\frac{3\frac{1}{4} \times 1\frac{3}{5}}{11\frac{1}{3} – 5 \frac{1}{3}}\)

  • A. \(\frac{14}{15}\)
  • B. \(\frac{13}{15}\)
  • C. \(\frac{4}{5}\)
  • D. \(\frac{11}{15}\)
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1207

If x varies inversely as y and y varies directly as z, what is the relationship between x and z?

  • A. x \(\alpha\) z
  • B. x \(\alpha\) \(\frac{1}{z}\)
  • C. a \(\alpha\) z\(^2\)
  • D. x \(\alpha\) \(\frac{1}{z^2}\)
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1208

Express 0.0000407, correct to 2 significant figures

  • A. 0.0
  • B. 0.00004
  • C. 0.000041
  • D. 0.0000407
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1209

The graph of y = x\(^2\) and y = x intersect at which of these points?

  • A. (0,0), (1,1)
  • B. (0,0), (0,1)
  • C. (1, 0), (0, 0)
  • D. (0, 0) (0, 0)
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1210

M and N are two subsets of the universal set (U). If n(U) = 48, n(M) = 20, n(N) = 30 and n(MUN) = 40, find n(M \(\cap\) N)

  • A. 18
  • B. 20
  • C. 30
  • D. 38
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1211

The diagonals of a rhombus WXYZ intersect at M. If |MW| = 5cm and |MX| = 12cm, calculate its perimeter

  • A. 42cm
  • B. 48cm
  • C. 52cm
  • D. 60cm
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1212

Given that Y is 20cm on a bearing of 300\(^o\) from x, how far south of y is x?

  • A. 10cm
  • B. 15cm
  • C. 25cm
  • D. 30cm
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1213

If tan x = \(\frac{4}{3}\), 0\(^o\) < x < 90\(^o\), find the value of sin x – cos x

  • A. \(\frac{1}{10}\)
  • B. \(\frac{1}{5}\)
  • C. \(\frac{5}{12}\)
  • D. 1\(\frac{2}{5}\)
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1214

A piece of thread of length 21.4cm is used to form a sector of a circle of radius 4.2cm on a piece of cloth. Calculate, correct to the nearest degree, the angle of the sector. [Take \(\pi = \frac{22}{7}\)]

  • A. 170\(^o\)
  • B. 177\(^o\)
  • C. 182\(^o\)
  • D. 192\(^o\)
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1215

Donations during the launching of a church project were sent in sealed envolopes. The table shows the distribution of the amount of money in the envelope. How much was the donation?

  • A. N26,792.00
  • B. N26,972.00
  • C. N62.792.00
  • D. N62,972.00
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1216

In the diagram, PQ is a straight line, (m + n) = 110\(^o\) and (n + r) = 130\(^o\) and (m + r) = 120\(^o\). Find the ratio of m : n : r

 

  • A. 2 : 3 : 4
  • B. 3 : 4 : 5
  • C. 4 : 5 : 6
  • D. 5 : 6 : 7
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1217

In the diagram, PQ//RS. Find x in terms of y and z

  • A. x = 240\(^o\) - y - z
  • B. x = 180\(^o\) - y - z
  • C. x = 360\(^o\) + y -z
  • D. x = 360\(^o\) - y - z
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1218

The diagram shows a trapezium inscribed in a semi-circle. If O is the mid-point of WZ and |WX| = |XY| = |YZ|, calculate the value of m

  • A. 90\(^o\)
  • B. 60\(^o\)
  • C. 45\(^o\)
  • D. 30\(^o\)
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