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 1791: Show that $\frac{\sin 2x}{1+\cos x}$ + $\frac{sin2}{1-cosx}$ is Options:
  A) sin x
  B) cos²x
  C) 2
  D) 3
  Show Answer
  The correct answer is C .
• Question 1792: Evaluate $\frac{0.00000231}{0.007}$ and leave the answer in standard form Options:
  A) 3.3 x 10⁴
  B) 3.3 x 10^-3
  C) 3.3 x 10^-4
  D) 3.3 x 10^-8
  Show Answer
  The correct answer is C .
• Question 1793: Solve for a positive number x such that 2(x³ - x² - 2x) = 1 Options:
  A) 4
  B) 3
  C) 2
  D) 1
  Show Answer
  The correct answer is C .
• Question 1794:

  

  In the figure, If PT is parallel to RS, PQ = PT, and angle SQT = 90${}^{\circ }$, find x.

  Options:
  A) 35${}^{\circ }$
  B) 50${}^{\circ }$
  C) 55${}^{\circ }$
  D) 70${}^{\circ }$
  E) 80${}^{\circ }$
  Show Answer
  The correct answer is D .
• Question 1795: What is the n-th term of the sequence 2, 6, 12, 20...? Options:
  A) 4n - 2
  B) 2(3^{n - 1})
  C) n² + n
  D) n² + 3n + 2
  Show Answer
  The correct answer is C .
• Question 1796:

  A surveyor walks 500m up a hill which slopes at an angle of 30${}^o$. Calculate the vertical height through which he rises

  Options:
  A) 252m
  B) 500m
  C) 250m
  D) 255m
  Show Answer
  The correct answer is C .
• Question 1797: Factorize $6x^2-14x-12$ Options:
  A) 2(x + 3)(3x - 2)
  B) 6(x - 2)(x + 1)
  C) 2(x - 3)(3x + 2)
  D) 6(x + 2)(x - 1)
  E) (3x - 4)(2x + 3)
  Show Answer
  The correct answer is C .
• Question 1798:

  

  In the figure, PQRS is a circle. If chords QR and RS are equal, calculate the value of x.

  Options:
  A) 80${}^{\circ }$
  B) 60${}^{\circ }$
  C) 45${}^{\circ }$
  D) 40${}^{\circ }$
  Show Answer
  The correct answer is D .
• Question 1799:

  

  In the figure, PQr is a semicircle while PQ and Qr are chords. QS is the perpendicular from Q to the diameter PR. What is the expression for QS?

  Options:
  A) QS = PS$\sqrt{SR}$
  B) QS = $\sqrt{(PSSR)}$
  C) QS = 2$\sqrt{(PSSR)}$
  D) QS = $\frac{1}{\sqrt{2}}$$\sqrt{(PSSR)}$
  Show Answer
  The correct answer is B .
• Question 1800: List the integral values of x which satisfy the inequality -1 < 5 - 2x $\ge$ 7. Options:
  A) -1, 0, 1, 2
  B) 0, 1, 2, 3
  C) -0, 1, 2, 3
  D) -1, 0, 2, 3
  Show Answer
  The correct answer is A .