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 1691: x varies directly as y and inversely as z. when x = 5, y = 2 and z = 1. What is the value of x when y = 5 and z = 2? Options:
  A) 2.5
  B) 5
  C) 6.25
  D) 6.52
  E) 7.5
  Show Answer
  The correct answer is C .
• Question 1692: The 4th term of an A.P. is 13 while the 10th term is 31. Find the 21st term. Options:
  A) 175
  B) 85
  C) 64
  D) 45
  Show Answer
  The correct answer is C .
• Question 1693:

  If N = $\frac{p}{2}$$(\frac{T_1-T_2}{T_1})$. Find P when N = 12, T₁ = 27 and T₂ = 24.

  Options:
  A) 48
  B) 108
  C) 54
  D) 216
  Show Answer
  The correct answer is D .
• Question 1694: x varies directly as y and inversely as z. when x = 5, y = 2 and z = 1. What is the value of x when y = 5 and z = 2? Options:
  A) 2.5
  B) 5
  C) 6.25
  D) 6.52
  E) 7.5
  Show Answer
  The correct answer is C .
• Question 1695:

  

  In the diagram, the tangent MN makes an angle of 55^o with the chord PS. IF O is the centre of the circle, find <RPS.

  Options:
  A) 55^o
  B) 45^o
  C) 35^o
  D) 25^o
  Show Answer
  The correct answer is C .
• Question 1696: Divide 4x³-3x+1 by 2x-1 Options:
  A) 2x²-x+1
  B) 2x²-x-1
  C) 2x²+x+1
  D) 2x²+x-1
  Show Answer
  The correct answer is B .
• Question 1697:

  Given matrix M = $\left|\begin{array}{ccc}-2& 0& 4\\ 0& -1& 6\\ 5& 6& 3\end{array}\right|$, find $M^T+2M$

  Options:
  A) $\left|\begin{array}{ccc}-4& 2& 1\\ 6& 0& 5\\ 0& 6& 2\end{array}\right|$
  B) $\left|\begin{array}{ccc}-6& 0& 13\\ 0& -3& 18\\ 14& 18& 9\end{array}\right|$
  C) $\left|\begin{array}{ccc}5& 2& 6\\ 0& 1& 1\\ 3& 4& -7\end{array}\right|$
  D) $\left|\begin{array}{ccc}-4& 0& 8\\ 0& -2& -16\\ 10& 12& 6\end{array}\right|$
  Show Answer
  The correct answer is B .
• Question 1698: What is the derivative of t² sin (3t - 5) with respect to t? Options:
  A) 6t cos (3t - 5)
  B) 2t sin (3t - 5) - 3t² cos (3t - 5)
  C) 2t sin (3t - 5) + 3t² cos (3t - 5)
  D) 2t sin (3t - 5) + t² cos 3t
  Show Answer
  The correct answer is C .
• Question 1699: If S = (x : x² = 9, x > 4), then S is equal to Options:
  A) 4
  B) {0}
  C) $\oplus$
  D) {$\oplus$}
  Show Answer
  The correct answer is C .
• Question 1700: Find the roots of the equation 10x² - 13x - 3 = 0 Options:
  A) x = $\frac{3}{5}$ or -$\frac{1}{2}$
  B) x = $\frac{3}{10}$ or -1
  C) x = $\frac{3}{10}$ or 1
  D) x = $\frac{1}{5}$ or $\frac{-3}{2}$
  E) x = -$\frac{1}{5}$ or $\frac{3}{2}$
  Show Answer
  The correct answer is E .