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 1681: If $\left|\begin{array}{cc}5& 3\\ x& 2\end{array}\right|$ = $\left|\begin{array}{cc}3& 5\\ 4& 5\end{array}\right|$, find the value of x Options:
  A) 3
  B) 4
  C) 5
  D) 7
  Show Answer
  The correct answer is C .
• Question 1682:

  If $\sin x=\frac{4}{5}$, find $\frac{1+{\cot }^{2}x}{{\csc }^{2}x-1}$.

  Options:
  A) $\frac{13}{2}$
  B) $\frac{25}{9}$
  C) $\frac{3}{13}$
  D) $\frac{4}{11}$
  Show Answer
  The correct answer is B .
• Question 1683: Simplify $\frac{x-y}{x^{\frac{1}{3}}-x^{\frac{1}{3}}}$ Options:
  A) x² + xy + y²
  B) x^{$\frac{2}{3}$} + x ^{$\frac{1}{3}$} + y^{$\frac{2}{3}$}
  C) x^{$\frac{2}{3}$} - x^{$\frac{1}{3}$}y^{$\frac{2}{3}$}
  D) y^{$\frac{2}{3}$}
  Show Answer
  The correct answer is B .
• Question 1684:

  The simple interest on ₦8550 for 3 years at x% per annum is ₦4890. Calculate the value of x to the nearest whole number.

  Options:
  A) 19%
  B) 20%
  C) 25%
  D) 16.3%
  Show Answer
  The correct answer is A .
• Question 1685: T varies directly as D and inversely as A. Given that T = 6, D = 3, and A = 2, find A when T = 3 and D = 6. Options:
  A) 4
  B) 6
  C) 8
  D) 12
  E) 24
  Show Answer
  The correct answer is C .
• Question 1686:

  If (x - a) is a factor of bx - ax + x², find the other factor.

  Options:
  A) (x + b)
  B) (x - b)
  C) (a + b)
  D) (a - b)
  Show Answer
  The correct answer is A .
• Question 1687: Calculate the area of a parallelogram whose diagonals are of length 8cm and 12cm and intersect at an angle of 135° Options:
  A) 271.5cm²
  B) 135.8cm²
  C) 96.0cm²
  D) 48.0cm²
  E) 33.9cm²
  Show Answer
  The correct answer is E .
• Question 1688: The ratio of the base area of a hollow cone to that of its curved surface is 1:4. If its base radius is 7cm, calculate the slant height of the cone Options:
  A) 7cm
  B) 22cm
  C) 28cm
  D) 49cm
  E) 154cm
  Show Answer
  The correct answer is C .
• Question 1689:

  

  In the figure, PQST is a parallelogram and TSR is a straight line. If the area of $△$QRS is 20cm², find the area of the trapezium PQRT.

  Options:
  A) 35cm²
  B) 65cm²
  C) 70cm²
  D) 140cm²
  Show Answer
  The correct answer is C .
• Question 1690:
  

  Study the given histogram above and answer the question that follows.

  What is the total number of students that scored at most 50 marks?

  Options:
  A) 380
  B) 340
  C) 360
  D) 240
  Show Answer
  The correct answer is C .