Mathematics JAMB, WAEC, NECO AND NABTEB Official Past Questions

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43

In the diagram above, \(\overline{MN} || \overline{KL}\), \(\overline{ML}\) and \(\overline{KN}\) intersect at X. |\(\overline{MN}\)| = 12cm, |\(\overline{MX}\)| = 10cm and |\(\overline{MN}\)| = 9cm. If the area of \(\triangle\) MXN is 16cm\(^2\), calculate the area of \(\triangle\) LXK

  • A. 9cm\(^2\)
  • B. 8cm\(^2\)
  • C. 10cm\(^2\)
  • D. 12cm\(^2\)
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44

A piece of rod of length 44 m is cut to form a rectangular shape such that the ratio of the length to the breadth is 7: 4. Find the breath.

  • A. 8m
  • B. 14m
  • C. 16m
  • D. 24m
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45

Find the quadratic equation whose roots are \(\frac{2}{3}\) and – 1

  • A. 3x\(^2\) - x - 2 = 0
  • B. 3x\(^2\) + x + 2 = 0
  • C. 3x\(^2\) + x - 2 = 0
  • D. 3x\(^2\) + x - 1 = 0
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46

Gifty, Justina, and Frank shared 60 oranges in the ratio 5: 3: 7 respectively. How many oranges did Justina receive?

  • A. 16
  • B. 12
  • C. 20
  • D. 28
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47

A number is added to both the numerator and the denominator of the fraction \(\frac{1}{8}\) if the result is \(\frac{1}{2}\), find the number.

  • A. 3
  • B. 4
  • C. 5
  • D. 6
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48

Consider the following statements:

m = Edna is respectful

n = Edna is brilliant,

If m ⇒ n, which of the following is valid? 

  • A. ¬n ⇒ ¬m.
  • B. ¬m ⇒ ¬n.
  • C. n ⇒ ¬m.
  • D. m ⇒ n.
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49

Make R the subject of the relation V = πl(R\(^2\) – r\(^2\))

  • A. R = \(\sqrt{\frac{V}{πl} + r^2}\)
  • B. R = \(\sqrt{\frac{V}{πl} - r^2}\)
  • C. R = \(\sqrt{V - πlr^2}\)
  • D. R = \(\sqrt{V + πlr^2}\)
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50

A cylindrical metallic barrel of height 2.5m and radius 0.245 is closed at one end. Find, correct to one decimal place, the total surface area of the barrel (Take π = \(\frac{22}{7}\))

  • A. 2.1 m\(^2\)
  • B. 3.5 m\(^2\)
  • C. 4.0 m\(^2\)
  • D. 9.4 m\(^2\)
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51

A variable W varies partly as M and Partly inversely as P. Which of the following correctly represents the relation with k\(_1\) and k\(_2\) constants?

  • A. W = \(\frac{k_1M}{k_2P}\)
  • B. W = (\(k_1 + k_2\))\(\frac{\text{M}}{\text{P}}\)
  • C. W = k\(_1\)M +  \(\frac{k_2}{P}\)
  • D. W = (k\(_1 + k_2\))M + P
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52

If 3x – 2y = – 5 and x + 2y = 9, find the value of \(\frac{x – y}{x + y}\)

  • A. \(\frac{5}{3}\)
  • B. \(\frac{3}{5}\)
  • C. \(\frac{-3}{5}\)
  • D. \(\frac{-5}{3}\)
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53

The interior angle of a regular polygon is 168º. Find the number of sides of the polygon.

  • A. 24
  • B. 30
  • C. 15
  • D. 12
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54

A  trader gave a change of # 540.00 instead of # 570.00 to a customer. Caculate the percentage error.

  • A. 5\(\frac{5}{19}\)%
  • B. 5\(\frac{5}{9}\)%
  • C. 5\(\frac{7}{19}\)%
  • D. 5\(\frac{7}{9}\)%
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55

The population of a town increases by 3% every year. In the year 2000, the population was 3000. Find the population in the year 2003.

  • A. 3,182
  • B. 3,278
  • C. 6,591
  • D. 7,515
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56

If log\(_3^{2x – 1}\) = 5, find the value of x

  • A. 8
  • B. 16
  • C. 64
  • D. 122
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57

Find the sum for which $ 1,250.00 will amount to $ 2,031.25 at 12.5% per annum simple interest.

  • A. 2 years
  • B. 3 years
  • C. 4 years
  • D. 5 years
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58

If (3 – 4\(\sqrt{2}\))(1 + 3\(\sqrt{2}\)) = a + b\(\sqrt{2}\),  find the value of b

  • A. -5
  • B. 5
  • C. -21
  • D. 21
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59

Simplify: (2p – q)\(^2\) – (p + q)\(^2\)

  • A. 3p(p - 2q)
  • B. 2p(p - 3q)
  • C. 3p(2p - q)
  • D. 2p(3p - q)
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60

Express in index form: log\(_a^x\) + log\(_a^y\) = 3 

  • A. x + y = 3
  • B. xy = 3
  • C. xy = a\(^3\)
  • D. x + y = a\(^3\)
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61

The first term of an Arithmetic Progression (A.P) is 2 and the last term is 29. If the common difference is 3, how many terms are in the A.P.?

  • A. 8
  • B. 9
  • C. 10
  • D. 11
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62

Given that P = {p: 1< p < 20}, where p is an integer and R = {r : 0 \(\leq\) r \(\leq\) 25, where r is a multiple of 4}. Find P ∩ R

  • A. {4, 8, 10, 16}
  • B. {4, 8, 12, 16}
  • C. {4, 8, 12, 16, 20}
  • D. {4, 8, 12, 16, 20, 24}
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63

Multiply 3.4 x 10\(^{-5}\) by 7.1 x 10\(^8\) and leave the answer in standard form. 

  • A. 2.414 x 10\(^2\)
  • B. 2.414 x 10\(^3\)
  • C. 2.414 x 10\(^4\)
  • D. 2.414 x 10\(^5\)
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