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 41: The radius of a circle is given as 5cm subject to an error of 0.1cm. What is the percentage error in the area of the circle? Options:
  A) $\frac{1}{25}$
  B) $\frac{1}{4}$
  C) 4
  D) 25
  Show Answer
  The correct answer is A .
• Question 42: Evaluate log 18 + log⁶ - log16${}^{\frac{1}{2}}$ Options:
  A) log 3
  B) log 9
  C) log 20
  D) 3 log 2
  E) 3 log 3
  Show Answer
  The correct answer is E .
• Question 43: Without using table, calculate the value of 1 + sec² 30^o Options:
  A) 2$\frac{1}{3}$
  B) $\frac{2}{15}$
  C) $\frac{5}{3}$
  D) 3$\frac{1}{2}$
  Show Answer
  The correct answer is A .
• Question 44: Solve the equation for the positive values of $\theta$ less than 360^o. 3 tan $\theta$ + 2 = -1 Options:
  A) 135^o or 315^o
  B) 45^o or 135^o
  C) 315^o or 180^o
  D) 315v + 45^o
  E) 360^o or 315^o
  Show Answer
  The correct answer is A .
• Question 45:

  $\begin{array}{cccccc}x& 1& 2& 3& 4& 5\\ f& 2& 1& 2& 1& 2\end{array}$

  Find the variance of the frequency distribution above

  Options:
  A) $\frac{3}{2}$
  B) $\frac{9}{4}$
  C) $\frac{5}{2}$
  D) 3
  Show Answer
  The correct answer is B .
• Question 46: Find the range of values of x which satisfy the inequalities 4x - 7 $\le$ 3x and 3x - 4 $\le$ 4x Options:
  A) -4 $\le$ x $\le$ 7
  B) -7 $\le$ x $\le$ 4
  C) x $\ge$ -7
  D) -7 $\le$ x $\le$ 6
  Show Answer
  The correct answer is A .
• Question 47: Simplify the expression: log₄16 + log₃27 + log₈4096 Options:
  A) -9
  B) $\frac{1}{3}$
  C) $\frac{1}{9}$
  D) 3
  E) 9
  Show Answer
  The correct answer is E .
• Question 48: The fifth term of an A.P is 24 and the eleventh term is 96. Find the first term. Options:
  A) 12
  B) 4
  C) -12
  D) -24
  Show Answer
  The correct answer is D .
• Question 49: Twenty girls and y boys sat on an examination. The mean marks obtained by the girls and boys were 52 and 57 respectively. if the total score for both girls and boys was 2950, find y. Options:
  A) 51
  B) 48
  C) 30
  D) 25
  E) 18
  Show Answer
  The correct answer is C .
• Question 50:

  The kinetic element with respect to the multiplication shown in the diagram below is

  $\begin{array}{ccccc}\oplus & p& p& r& s\\ p& r& p& r& p\\ q& p& q& r& s\\ r& r& r& r& r\\ s& q& s& r& q\end{array}$

  Options:
  A) p
  B) q
  C) r
  D) s
  Show Answer
  The correct answer is D .