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 181:

  

  From the diagram above, find x

  Options:
  A) 65${}^{\circ }$
  B) 50${}^{\circ }$
  C) 75${}^{\circ }$
  D) 55${}^{\circ }$
  Show Answer
  The correct answer is A .
• Question 182:

  If a = $\frac{2x}{1-x}$ and b = $\frac{1+x}{1-x}$, then a² - b² in the simplest form is

  Options:
  A) $\frac{3x+1}{1-x}$
  B) $\frac{3x^2-1}{(x-1{)}^2}$
  C) $\frac{3x-2}{1-x}$
  D) $\frac{3x^2-1}{(x-1)}$
  Show Answer
  The correct answer is A .
• Question 183:

  $\begin{array}{cc}Class& Frequency\\ 1-5& 2\\ 6-10& 4\\ 11-15& 5\\ 16-20& 2\\ 21-25& 3\\ 26-30& 2\\ 31-35& 1\\ 36-40& 1\end{array}$

  Find the median of the observation in the table given.

  Options:
  A) 11.5
  B) 12.5
  C) 14.0
  D) 14.5
  Show Answer
  The correct answer is D .
• Question 184:

  

  In the diagram, EFGH is a circle centre O. FH is a diameter and GE is a chord which meets FH at right angle at the point N. If NH = 8cm and EG = 24cm, calculate FH

  Options:
  A) 32cm
  B) 26cm
  C) 20cm
  D) 16cm
  Show Answer
  The correct answer is B .
• Question 185:

  

  FG is a given straight line and H is a fixed point. The construction marks shown in the diagram indicate the

  Options:
  A) perpendicular bisector of the line
  B) perpendicular bisector of th eline JK
  C) perpendicular bisector of the line HI
  D) perpendicular from H to the line FG
  Show Answer
  The correct answer is D .
• Question 186: The sum to infinity of the series: 1 + (1/3) + (1/9) + (1/27) + ... is Options:
  A) 11/3
  B) 10/3
  C) 5/2
  D) 3/2
  Show Answer
  The correct answer is D .
• Question 187: On a square paper of length 2.524375cm is inscribed square diagram of length 0.524375cm. Find the area of the paper not covered by the diagram. correct to 3 significant figures. Options:
  A) 6.00cm²
  B) 6.10cm²
  C) 6cmv
  D) 6.09cm²
  E) 4.00cm²
  Show Answer
  The correct answer is B .
• Question 188: Simplify 4 √[(390695T− 8)½)] Options:
  A) 1/T
  B) 2T
  C) 5/T
  D) T/5
  Show Answer
  The correct answer is C .
• Question 189: The lengths of the sides of a right angled triangle are (3x + 1)cm, (3x - 1)cm and xcm. Find x Options:
  A) 2
  B) 6
  C) 18
  D) 12
  E) 5
  Show Answer
  The correct answer is D .
• Question 190: Given distribution of color beads: blue, black, yellow, white and brown with frequencies 1, 2, 3, 4, and 5 respectively. Find the probability that a bead picked at random will be blue or white. Options:
  A) 7/15
  B) 2/5
  C) 1/3
  D) 1/15
  Show Answer
  The correct answer is C .