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 1011: if P and Q are fixed points and X is a point which moves so that XP = XQ, the locus of X is Options:
  A) A straight line
  B) a circle
  C) the bisector of angle PXQ
  D) the perpendicular bisector of PQ
  Show Answer
  The correct answer is D .
• Question 1012: What is the size of an exterior angle of a regular pentagon? Options:
  A) 36^o
  B) 60^o
  C) 72^o
  D) 120^o
  E) 360^o
  Show Answer
  The correct answer is C .
• Question 1013: The operation * on the set R of real number is defined by x * y = 3x + 2y − 1, find 3* − 1 Options:
  A) 9
  B) - 9
  C) 6
  D) - 6
  Show Answer
  The correct answer is C .
• Question 1014: $\left(\begin{array}{cc}-2& 1\\ 2& 3\end{array}\right)$ + $\left(\begin{array}{cc}p& q\\ r& s\end{array}\right)$ = $\left(\begin{array}{cc}1& 0\\ 0& 1\end{array}\right)$. What is the value of r? Options:
  A) -$\frac{1}{8}$
  B) $\frac{3}{8}$
  C) $\frac{5}{8}$
  D) $\frac{1}{4}$
  Show Answer
  The correct answer is D .
• Question 1015: If y = 2x - sin2x, find dy/dx when x = π/4 Options:
  A) π
  B) -π
  C) π/2
  D) -π/2
  Show Answer
  The correct answer is D .
• Question 1016: A woman bought a grinder for ₦60,000. She sold it at a loss of 15%. How much did she sell it? Options:
  A) ₦53,000
  B) ₦52,000
  C) ₦51,000
  D) ₦50,000
  Show Answer
  The correct answer is C .
• Question 1017:

  

  In the figure, XYZ is a triangle with XY = 5cm, XZ = 2cm and XZ is produced to E making the angle < YZE = 150${}^{\circ }$. If the angle XYZ = $\theta$, calculate the value of sin$\theta$

  Options:
  A) $\frac{3}{5}$
  B) $\frac{1}{2}$
  C) $\frac{2}{5}$
  D) $\frac{1}{5}$
  Show Answer
  The correct answer is D .
• Question 1018: The following marks were obtained by twenty students in an examination: 53, 30, 70, 84, 59, 43, 90, 20, 78, 48, 44, 60, 81, 73, 50, 37, 67, 68, 64, 52. Find the numbers of students who scored at least 50 marks Options:
  A) 6
  B) 10
  C) 13
  D) 14
  Show Answer
  The correct answer is D .
• Question 1019: If $m\ast n=(\frac{m}{n}-\frac{n}{m}$) for m, n belong to R, evaluate -3*4 Options:
  A) $\frac{-25}{12}$
  B) $\frac{-7}{12}$
  C) $\frac{7}{12}$
  D) $\frac{25}{12}$
  Show Answer
  The correct answer is C .
• Question 1020: Simplify $\frac{3^{-5n}}{9^{1-n}}\times {27}^{n+1}$ Options:
  A) 3²
  B) 3³
  C) 3⁵
  D) 3
  Show Answer
  The correct answer is D .