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 1761: Find the mean deviation of 20, 25, 21, 27, 28, 29, to the nearest whole number Options:
  A) 2
  B) 3
  C) 4
  D) 5
  E) 6
  Show Answer
  The correct answer is B .
• Question 1762: Two ladders of length 5m and 7m lean against a pole and make angles 45° and 60° with the ground respectively. What is their distance apart on the pole correct to two decimal places? Options:
  A) 9.60m
  B) 6.06m
  C) 2.54m
  D) 2.53m
  E) 2.00m
  Show Answer
  The correct answer is D .
• Question 1763:

  $\begin{array}{cccccccc}\text{Marks}& 2& 3& 4& 5& 6& 7& 8\\ \text{No. of students}& 3& 1& 5& 2& 4& 2& 3\end{array}$

  From the table above, if the pass mark is 5, how many students failed the test?

  Options:
  A) 6
  B) 2
  C) 9
  D) 7
  Show Answer
  The correct answer is C .
• Question 1764: change 71₁₀ to base 8 Options:
  A) 107₈
  B) 106₈
  C) 71₈
  D) 17₈
  Show Answer
  The correct answer is A .
• Question 1765: If sinθ = ³/₅. Find Tanθ Options:
  A) ³/₄
  B) ³/₅
  C) ²/₅
  D) ¹/₄
  Show Answer
  The correct answer is A .
• Question 1766: Find to infinity, the sum of the sequence $1,\frac{9}{10},{\left(\frac{9}{10}\right)}^2,{\left(\frac{9}{10}\right)}^3,.....$ Options:
  A) 10
  B) 9
  C) ¹⁰/₉
  D) ⁹/₁₀
  Show Answer
  The correct answer is A .
• Question 1767: Evaluate ${\int }_1^2(x^2-4x)dx$ Options:
  A) $\frac{11}{3}$
  B) $\frac{3}{11}$
  C) $-\frac{3}{11}$
  D) $-\frac{11}{3}$
  Show Answer
  The correct answer is D .
• Question 1768: In a restaurant, the cost of providing a particular type of food is partly constant and partially inversely proportional to the number of people. If cost per head for 100 people is 30k and the cost for 40 people is 60k, Find the cost for 50 people? Options:
  A) 15k
  B) 20k
  C) 50k
  D) 40k
  E) 45k
  Show Answer
  The correct answer is C .
• Question 1769: Factory P produces 20,000 bags of cement per day while factory Q produces 15,000 bags per day. If P reduces production by 5% and Q increases production by 5%, determine the effective loss in the number of bags produced per day by the two factories Options:
  A) 250
  B) 750
  C) 1000
  D) 1250
  Show Answer
  The correct answer is A .
• Question 1770:

  

  The angles marked in the figure are measured in degrees. Find x.

  Options:
  A) 45${}^{\circ }$
  B) 90${}^{\circ }$
  C) 60${}^{\circ }$
  D) 15${}^{\circ }$
  E) 30${}^{\circ }$
  Show Answer
  The correct answer is E .