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 1241: Four interior angles of a pentagon are 90^o - x^o, 90^o + x^o, 110^o - 2x^o, 110^o + 2x^o. Find the fifth interior angle Options:
  A) 110^o
  B) 120^o
  C) 130^o
  D) 140^o
  Show Answer
  The correct answer is D .
• Question 1242: Calculate the mean deviation of the set of numbers 7, 3, 14, 9, 7, and 8. Options:
  A) 13/6
  B) 5/2
  C) 7/6
  D) 7/3
  Show Answer
  The correct answer is D .
• Question 1243:

  

  The bar chart above shows the number of times the word a, and , in, it, the , to appear in a paragraph in a book. What is the ratio of the least frequent word?

  Options:
  A) ¹/₄
  B) ¹/₃
  C) ²/₃
  D) ³/₄
  Show Answer
  The correct answer is A .
• Question 1244: Find the exterior angle of a 12 sided regular polygon Options:
  A) 12${}^{\circ }$
  B) 24${}^{\circ }$
  C) 25${}^{\circ }$
  D) 30${}^{\circ }$
  Show Answer
  The correct answer is D .
• Question 1245:

  $\begin{array}{cccccc}\text{Marks}& 1& 2& 3& 4& 5\\ \text{Frequency}& 2& 2& 8& 4& 4\end{array}$

  The table above shows the marks obtained in a given test. Find the mean mark.

  Options:
  A) 3.1
  B) 3.0
  C) 3.3
  D) 3.2
  Show Answer
  The correct answer is C .
• Question 1246: Evaluate ${\int }_1^2(6x^2-2x)dx$ Options:
  A) 16
  B) 13
  C) 12
  D) 11
  Show Answer
  The correct answer is D .
• Question 1247:

  If a fair coin is tossed twice, what is the probability of obtaining at least one head?

  Options:
  A) 0.25
  B) 0.75
  C) 0.5
  D) 0.33
  Show Answer
  The correct answer is B .
• Question 1248: A particle p moves between points S and T such that angle SPT is always constant. Find the locus of P. Options:
  A) it is a straight line perpendicular to ST.
  B) it is a quadrant of a circle with ST as diameter
  C) it is a perpendicular bisector of ST
  D) it is a semi-circle with ST as diameter
  Show Answer
  The correct answer is D .
• Question 1249:

  A man invested a sum of ₦280.00 partly at 5% and partly at 4%. if the total interest is ₦12.90 per annum, find the amount invested at 5%.

  Options:
  A) 14.00
  B) 120.00
  C) 140.00
  D) 160.00
  Show Answer
  The correct answer is D .
• Question 1250: If P = $\left(\begin{array}{cc}2& -3\\ 1& 1\end{array}\right)$ Options:
  A) $\left(\begin{array}{cc}-\frac{1}{5}& -\frac{3}{5}\\ -\frac{1}{5}& -\frac{2}{5}\end{array}\right)$
  B) $\left(\begin{array}{cc}\frac{1}{5}& \frac{3}{5}\\ \frac{1}{5}& \frac{2}{5}\end{array}\right)$
  C) $\left(\begin{array}{cc}-\frac{1}{5}& \frac{3}{5}\\ -\frac{1}{5}& \frac{2}{5}\end{array}\right)$
  D) $\left(\begin{array}{cc}\frac{1}{5}& \frac{3}{5}\\ -\frac{1}{5}& \frac{2}{5}\end{array}\right)$
  Show Answer
  The correct answer is D .