Mathematics Exam Past Questions and Answers | JAMB, WAEC and NECO

Mathematics looks at measurement, relationships, and properties of numbers and groups using numbers and symbols. Important topics in math include arithmetic, algebra, geometry, and calculus.

• Question 391: The angle of elevation of the top T of a pole from a point X on the horizontal ground is 32°, if X is 68 m away from the foot F of the pole, calculate the height FT of the pole, correct to one decimal place. Options:
  A) 128.3m
  B) 108.8m
  C) 80.2m
  D) 57.7m
  E) 42.5m
  Show Answer
  The correct answer is E .
• Question 392:

  If sin $\theta$ = $\frac{x}{y}$ and 0^o < 90^o, then find $\frac{1}{tan\theta }$.

  Options:
  A) $\frac{x}{\sqrt{y^2-x^2}}$
  B) $\frac{y}{x}$
  C) $\frac{\sqrt{y^2+x^2}}{y^2-x^2}$
  D) $\frac{y^2-x^2}{x}$
  Show Answer
  The correct answer is D .
• Question 393:

  If $\left|\begin{array}{lll}2& -5& 3\\ x& 1& 4\\ 0& 3& 2\end{array}\right|=132$, find the value of x.

  Options:
  A) 5
  B) 8
  C) 6
  D) 3
  Show Answer
  The correct answer is B .
• Question 394: Find the mean deviation of 20, 25, 21, 27, 28, 29, to the nearest whole number Options:
  A) 2
  B) 3
  C) 4
  D) 5
  E) 6
  Show Answer
  The correct answer is B .
• Question 395: Simplify $\frac{3^n-3^{n-1}}{3^3\times 3^n-27\times 3^{n-1}}$ Options:
  A) 1
  B) 6
  C) $\frac{1}{27}$
  D) $\frac{4}{3}$
  Show Answer
  The correct answer is C .
• Question 396: Solve the quadratic inequalities x² - 5x + 6 ≥0 Options:
  A) x ≤ 2, x ≥ 3
  B) x ≤ 3, x ≥ 2
  C) x ≤ -2, x ≥ -3
  D) x ≤-3, x ≥ 2
  Show Answer
  The correct answer is A .
• Question 397:
  

  From the diagram above. Find the fraction of the shaded position?

  Options:
  A) $\frac{1}{3}$
  B) $\frac{1}{5}$
  C) $\frac{1}{4}$
  D) $\frac{1}{6}$
  Show Answer
  The correct answer is D .
• Question 398:

  Evaluate ${\int }_{-2}^1(x-1{)}^{2}dx$

  Options:
  A) $\frac{-10}{3}$
  B) 7
  C) 9
  D) 11
  Show Answer
  The correct answer is C .
• Question 399: Find the mean deviation of 20, 25, 21, 27, 28, 29, to the nearest whole number Options:
  A) 2
  B) 3
  C) 4
  D) 5
  E) 6
  Show Answer
  The correct answer is B .
• Question 400: After what length of time will N2400.00 yield an interest of N60.00 at 1$\frac{1}{2}$% per annum? Options:
  A) 2$\frac{4}{5}$ years
  B) 1$\frac{2}{3}$ years
  C) 1$\frac{1}{2}$ years
  D) 1 years
  E) $\frac{3}{5}$ year
  Show Answer
  The correct answer is B .