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 2351: BY how much is the mean of 30, 56, 31, 55, 43 and 44 less than the median? Options:
  A) 0.75
  B) 0.50
  C) 0.33
  D) 0.17
  Show Answer
  The correct answer is C .
• Question 2352: If three angles of a quadrilateral are (3y - x - z)^o, 3x^o, (2z - 2y - x)^o find the fourth angle in terms of x, y and z Options:
  A) (360 - x- y - z)^o
  B) (360 + x + y - z)^o
  C) (180 - x + y + z)^o
  D) (180 - x + y + z)^o
  Show Answer
  The correct answer is A .
• Question 2353: A side of a rhombus is 2cm in length. An angle of the rhombus is 60^o. What is the length of the diagonal facing this angle? Options:
  A) 2cm
  B) 8cm
  C) 4cm
  D) 2$\sqrt{3}$cm
  E) 16cm
  Show Answer
  The correct answer is D .
• Question 2354:

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

  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 .
• Question 2355: 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 .
• Question 2356:

  If P $=\left[\begin{array}{cc}x+3& x+2\\ x+1& x-1\end{array}\right]$ evaluate x if |P| = -10

  Options:
  A) -5
  B) -2
  C) 2
  D) 5
  Show Answer
  The correct answer is D .
• Question 2357: If x is a positive real number, find the range of values for which $\frac{1}{3x}$ + $\frac{1}{2}$ > $\frac{1}{4x}$
  Options:
  A) 0 > -$\frac{1}{6}$
  B) x > 0
  C) 0 < x < 4
  D) 0 < x < $\frac{1}{6}$
  Show Answer
  The correct answer is D .
• Question 2358:
  

  How many students scored at least25%

  Options:
  A) 16
  B) 19
  C) 3
  D) 8
  Show Answer
  The correct answer is A .
• Question 2359: Factorize completely (4x + 3y)² - (3x - 2y)² Options:
  A) (x + 5y)(7x + y)
  B) (x + 5y)(7x - y)
  C) (x - 5y)(7x + y)
  D) (x - 5y)(7x -y)
  Show Answer
  The correct answer is A .
• Question 2360: What must be added to 3x² - 5x to make it a perfect square? Options:
  A) $\frac{36}{25}$
  B) $\frac{25}{36}$
  C) -$\frac{25}{36}$
  D) -$\frac{5}{6}$
  E) -$\frac{6}{5}$
  Show Answer
  The correct answer is B .