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 1411:

  Two binary operations $\ast$ and $\oplus$ are defines as m $\ast$ n = mn - n - 1 and m $\oplus$ n = mn + n - 2 for all real numbers m, n.

  Find the value of 3 $\oplus$ (4 $\ast$ 50)

  Options:
  A) 60
  B) 57
  C) 54
  D) 42
  Show Answer
  The correct answer is C .
• Question 1412:

  The locus of pointsequidistant from a fixed point.

  Options:
  A) circle
  B) perpendicular lines
  C) straight line
  D) bisector
  Show Answer
  The correct answer is A .
• Question 1413:

  Determine the mean monthly salary of 50 employees of a company from the following frequency distribution.

  $\begin{array}{cc}\text{Monthly salary}& \text{Frequency}\\ N200.00& 10\\ N325.00& 5\\ N100.00& 20\\ N120.00& 2\\ N60.00& 10\\ N80.00& 3\end{array}$

  Options:
  A) ₦215.30
  B) ₦134.10
  C) ₦143.10
  D) ₦80.00
  E) ₦50.30
  Show Answer
  The correct answer is B .
• Question 1414: Solve the given equation (log₃x)² - 6 log₃x + 9 = 0 Options:
  A) 27
  B) 9
  C) $\frac{1}{27}$
  D) 18
  E) 81
  Show Answer
  The correct answer is A .
• Question 1415:

  

  The pie chart shows the distribution of courses offered by students. What percentage of the students offer English?

  Options:
  A) 30%
  B) 25%
  C) 35%
  D) 20%
  Show Answer
  The correct answer is B .
• Question 1416: The volume of a hemispherical bowl is $718\frac{2}{3}$. Find its radius . Options:
  A) 4.0 cm
  B) 5.6 cm
  C) 7.0 cm
  D) 3.8 cm
  Show Answer
  The correct answer is C .
• Question 1417: The radius of a sphere is 21cm. If s and v represent the curved surface area and volume respectively, what is s : v? (take π = 3.142) Options:
  A) 1:03
  B) 1:07
  C) 3:01
  D) 3:07
  E) 7:01
  Show Answer
  The correct answer is B .
• Question 1418: If the variance of 3+x, 6, 4, x and 7-x is 4 and the mean is 5, find the standard deviation Options:
  A) $\sqrt{3}$
  B) 2
  C) 3
  D) $\sqrt{2}$
  Show Answer
  The correct answer is B .
• Question 1419: 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 1420: Evaluate$\left(\begin{array}{cc}3& -2\\ -7& 5\end{array}\right)$ + 2$\left(\begin{array}{cc}-2& 4\\ 3& -1\end{array}\right)$ Options:
  A) $\left(\begin{array}{cc}-1& 6\\ -1& 3\end{array}\right)$
  B) $\left(\begin{array}{cc}3& 4\\ -2& 6\end{array}\right)$
  C) $\left(\begin{array}{cc}-1& 6\\ 1& 3\end{array}\right)$
  D) $\left(\begin{array}{cc}3& 4\\ 2& 6\end{array}\right)$
  Show Answer
  The correct answer is A .