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 1821: The ratio of the length of two similar rectangular blocks is 2 : 3. If the volume of the larger block is 351cm³, then the volume of the other block is Options:
  A) 234.00 cm³
  B) 526.50 cm³
  C) 166.00 cm³
  D) 687cm³
  Show Answer
  The correct answer is A .
• Question 1822:

  At what points does the straight line y = 2x + 1 intersect the curve y = 2x² + 5x - 1?

  Options:
  A) (-2, -3) and($\frac{1}{2}$, 2)
  B) (1, 0), (1, 3)
  C) (4, 0) and (0,1)
  D) 2, 0) and (0,1)
  Show Answer
  The correct answer is A .
• Question 1823: The sum of the first two terms of a geometric progression is x and sum of the last terms is y. If there are n terms in all, then the common ratio is Options:
  A) $\frac{x}{y}$
  B) $\frac{y}{x}$
  C) ($\frac{x}{y}$)^{$\frac{1}{n-2}$}
  D) ($\frac{y}{x}$)^{$\frac{1}{n-2}$}
  Show Answer
  The correct answer is D .
• Question 1824:

  Calculate the length of an arc of a circle diameter 14 cm, which subtends an angle of 90${}^{\circ }$ at the center of the circle

  Options:
  A) 7π/2 cm
  B) 7π cm
  C) 14π cm
  D) 7π/4 cm
  Show Answer
  The correct answer is A .
• Question 1825:

  

  In the diagram, XZ is the diameter of a circle's radius $\frac{5}{2}$. If XY is 4cm, then the area of the triangle XYZ is

  Options:
  A) 12cm²
  B) 28$\frac{1}{2}$cm²
  C) 16cm²
  D) 10cm²
  E) 6cm²
  Show Answer
  The correct answer is E .
• Question 1826: If x + 1 is a factor of x³ + 3x² + kx + 4, find the value of k Options:
  A) 6
  B) -6
  C) 8
  D) -8
  Show Answer
  The correct answer is A .
• Question 1827: The numbers 3, 2, 8, 5, 7, 12, 9 and 14 are the marks scored by a group of students in a class test. If P is scored by an group of students in a class test. If P is the mean and Q the median, the P + Q is Options:
  A) 18
  B) 17$\frac{1}{2}$
  C) 16
  D) 15
  Show Answer
  The correct answer is D .
• Question 1828:

  

  In the diagram above; O is the centre of the circle and |BD| = |DC|. If ∠DCB = 35^o, find ∠BAO.

  Options:
  A) 20^o
  B) 25^o
  C) 30^o
  D) 35^o
  E) 40^o
  Show Answer
  The correct answer is A .
• Question 1829: Evaluate (x + $\frac{1}{x}$ + 1)² - (x + $\frac{1}{x}$ + 1)² Options:
  A) 4x²
  B) ($\frac{2}{x}$ + 2)²
  C) 4
  D) 4(1 + x)
  Show Answer
  The correct answer is D .
• Question 1830:

  $\begin{array}{ccccc}\oplus mod10& 2& 4& 6& 8\\ 2& 4& 8& 2& 6\\ 4& 8& 6& 4& 2\\ 4& 8& 6& 4& 2\\ 6& 2& 4& 6& 8\\ 8& 6& 2& 8& 4\end{array}$

  The multiplication table above has modulo 10 on the set S = (2, 4, 6, 8). Find the inverse of 2

  Options:
  A) 2
  B) 4
  C) 6
  D) 8
  Show Answer
  The correct answer is A .