Mathematics JAMB, WAEC, NECO AND NABTEB Official Past Questions

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169

Simplify \(3\sqrt{12} + 10\sqrt{3} – \frac{6}{\sqrt{3}}\)

  • A. 10\(\sqrt{3}\)
  • B. 18\(\sqrt{3}\)
  • C. 14\(\sqrt{3}\)
  • D. 7\(\sqrt{3}\)
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170

In the diagram above, M, N, R are points on the circle centre O. ∠ORN = 48° and ∠RNM = 124°. Find ∠OMN.

  • A. \(58^0\)
  • B. \(64^0\)
  • C. \(48^0\)
  • D. \(76^0\)
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171

One-third of the sum of two numbers is 12, twice their difference is 12. Find the numbers.

  • A. 22 and 14
  • B. 20 and 16
  • C. 21 and 15
  • D. 23 and 13
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172

The angle of elevation of the top of a building from a point Z on the ground is 50°. If the height of the building is 124 m, find the distance from Z to the foot of the building.

  • A. 147.78m
  • B. 104.05m
  • C. 161.87m
  • D. 192.91m
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173

Mr Manu is 4 times as old as his son, Adu. 7 years ago the sum of their ages was 76. How old is Adu?

  • A. 22years
  • B. 12years
  • C. 18years
  • D. 15 years
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174

There are 30 students in a class. 15 study woodwork and 13 study metal work. 6 study neither of the 2 subjects. How many student study woodwork but not metal work?

  • A. 13
  • B. 11
  • C. 5
  • D. 9
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175

The angle of a sector of a circle of radius 3.4 cm is 115°. Find the area of the sector.

\((Take \pi = \frac{22}{7})\)

  • A. \(11.6cm^2\)
  • B. \(12.7cm^2\)
  • C. \(10.2cm^2\)
  • D. \(9.4cm^2\)
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176

Solve  \(1 + \sqrt[3]{ x – 3} = 4\)

  • A. 30
  • B. 6
  • C. 12
  • D. 66
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177

In the diagram, O is the center of the circle QRS and ∠SQR = 28°. Find ∠ORS.

  • A. \(56^0\)
  • B. \(28^0\)
  • C. \(76^0\)
  • D. \(62^0\)
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178

It takes 12 men 8 hours a day to finish a piece of work in 4 days. In how many days will it take 4 men working 16 hours a day to complete the same piece of work?

  • A. 6 days
  • B. 8 days
  • C. 10 days
  • D. 12 days
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179

200 tickets were sold for a show. VIP tickets costs ₦1,200 and ₦700 for regular. Total amount realised from the sale of the tickets was ₦180,000. Find the number of VIP tickets sold and the the number of regular ticket sold.

  • A. VIP = 80, Regular = 100
  • B. VIP = 60, Regular = 120
  • C. VIP = 60, Regular = 100
  • D. VIP = 80, Regular = 120
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180

Give the number of significant figures of the population of a town which has approximately 5,020,700 people

  • A. 7 significant figures
  • B. 3 significant figures
  • C. 4 significant figures
  • D. 5 significant figures
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181

A circle has a radius of 13 cm with a chord 12 cm away from the centre of the circle. Calculate the length of the chord.

  • A. 16 cm
  • B. 8 cm
  • C. 5 cm
  • D. 10 cm
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182

Use the graph of sin (θ) above to estimate the value of θ when sin (θ) = -0.6 for \(0^o ≤ θ ≤ 360^o\)

  • A. θ = 223\(^o\), 305\(^o\)
  • B. θ = 210\(^o\), 330\(^o\)
  • C. θ = 185\(^o\), 345\(^o\)
  • D. θ = 218\(^o\), 323\(^o\)
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183

A ship sets sail from port A (86\(^o\)N, 56\(^o\)W) for port B (86\(^o\)N, 64\(^o\)W), which is close by. Find the distance the ship covered from port A to port B, correct to the nearest km.

[Take \(\pi\) = 3.142 and R = 6370 km]

  • A. 62 km
  • B. 97 km
  • C. 389 km
  • D. 931 km
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184

The perimeter of an isosceles right-angled triangle is 2 meters. Find the length of its longer side.

  • A. 2 - \(\sqrt2\)
  • B. -4 + 3\(\sqrt2\)
  • C. It cannot be determined
  • D. -2 + 2\(\sqrt2\) m
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185

A student pilot was required to fly to an airport and then return as part of his flight training. The average speed to the airport was 120 km/h, and the average speed returning was 150 km/h. If the total flight time was 3 hours, calculate the distance between the two airports.

  • A. 270 km
  • B. 200 km
  • C. 360 km
  • D. 450 km
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186

PQRS is a cyclic quadrilateral. Find \(x\) + \(y\)

  • A. 50
  • B. 60
  • C. 15
  • D. 0
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187

The area of a trapezium is 200 cm\(^2\). Its parallel sides are in the ratio 2 : 3 and the perpendicular distance between them is 16 cm. Find the length of each of the parallel sides.

  • A. 10 cm and 15 cm
  • B. 8 cm and 12 cm
  • C. 6 cm and 9 cm
  • D. 12 cm and 18 cm
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188

Study the given histogram above and answer the question that follows.

What is the total number of students that scored at most 50 marks?

  • A. 380
  • B. 340
  • C. 360
  • D. 240
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189

Find the volume of a cone which has a base radius of 5 cm and slant height of 13 cm.

  • A. \(300\pi\) cm\(^3\)
  • B. \(325\pi\) cm\(^3\)
  • C. \(\frac{325}{3}\pi\) cm\(^3\)
  • D. \(100\pi\) cm\(^3\)
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