Mathematics JAMB, WAEC, NECO AND NABTEB Official Past Questions

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43

the area shaded with vertical lines is the solution set of the inequalities;

  • A. y ≤ x, y + 2x ≤ -3
  • B. y ≥ x, y + 2x ≥ - 3
  • C. y ≤ x, y ≤ 2x - 3, x ≤ 3
  • D. y ≤ -x, y ≤ 2x - 3, x ≤ 3
  • E. y ≥ x, y + 2x ≥ 3, x ≤ 3
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44

The area shaded with horizontal lines is the solution set of the inequalities;

  • A. y ≥ x, y + 3 ≥ 2x, x ≤ 3
  • B. y ≤ x, y + 2x ≥ -3, x ≤ 3
  • C. y ≤ -x, y + 2x ≤ 3, x ≥ -3
  • D. y ≥ -x, y + 3 ≤ 2x, x ≥ -3
  • E. y ≤ x, y ≤ 2x - 3, x ≥ 3
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45

In a class of 80 students, every students had to study economics or geography, or both economics and geography, if 65 students studied economics and 50 studied geography, how many studied both subjects?

  • A. 15
  • B. 30
  • C. 35
  • D. 45
  • E. 50
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46

Let J be the set of positive integers, If H = {x: x∈J, x\(^2\) < 3 and x ≠ 0}, then

  • A. H = {1}
  • B. H is an infinite set
  • C. H = {0, 1, 2}
  • D. H = {}
  • E. J ≤ H
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47

Find the sum of the first five terms of the G.P 2,6, 18 ….

  • A. 484
  • B. 243
  • C. 242
  • D. 130
  • E. 121
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48

An arc of length 22cm subtends an angle of θ at the center of the circle. What is the value of θ if the radius of the circle is 15cm?[Take π = 22/7]

  • A. 70o
  • B. 84o
  • C. 96o
  • D. 156o
  • E. 168o
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49

Find the values of x for which y = 5

  • A. -2.5, 2.0
  • B. -2.6, 2.1
  • C. -2.0, 1.5
  • D. -2.0, 2.0
  • E. 0, 0
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50

From the graph determine the roots of the equation y = 2x\(^2\) + x – 6

  • A. -3, 4
  • B. -2, -6
  • C. -2, 1.5
  • D. -1, 1
  • E. 2, 1.5
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51

Find the 4th term of an A.P, whose first term is 2 and the common difference is 0.5

  • A. 0.5
  • B. 2.5
  • C. 3.5
  • D. 4
  • E. 4.5
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52

While doing his physics practical, Idowu recorded a reading as 1.12cm instead of 1.21cm. Calculate his percentage error

  • A. 1.17%
  • B. 6.38%
  • C. 7.44%
  • D. 8.035%
  • E. 9.00%
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53

If log x = \(\bar{2}.3675\) and log y = 0.9750, what is the value of x + y? Correct to three significant figures

  • A. 1.18
  • B. 1.31
  • C. 9.03
  • D. 9.44
  • E. 9.46
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54

Evaluate using the logarithm table, log(0.65)2

  • A. 1.6258
  • B. 0.6272
  • C. 0.6258
  • D. 3.6258
  • E. 1.6272
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55

Simplify \(\frac{\log \sqrt{8}}{\log 8}\)

  • A. 1/3
  • B. 1/2
  • C. 1/3log√2
  • D. 1/3log√8
  • E. 1/2log√2
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56

Given that 1/3log10 P = 1, find the value of P

  • A. 1/10
  • B. 3
  • C. 10
  • D. 100
  • E. 1000
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57

Express 0.00562 in standard form

  • A. 5.62 x 10-3
  • B. 5.62 x 10-2
  • C. 562 x 10-2
  • D. 5.62 x 102
  • E. 5.62 x 103
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58

If 3\(^{2x}\) = 27, what is x?

  • A. 1
  • B. 1.5
  • C. 4.5
  • D. 18
  • E. 40.5
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59

Simplify 125\(^{\frac{-1}{3}}\) x 49\(^{\frac{-1}{2}}\) x 10\(^0\)

  • A. 350
  • B. 35
  • C. 1/35
  • D. 1/350
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