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 1251: If y = x² - $\frac{1}{x}$, find $\frac{\delta y}{\delta x}$ Options:
  A) 2x - $\frac{1}{x^2}$
  B) 2x + x²
  C) 2x - x²
  D) 2x + $\frac{1}{x^2}$
  Show Answer
  The correct answer is D .
• Question 1252:

  $\begin{array}{ccccc}Weight(s)& 0-10& 10-20& 20-30& 40-50\\ \text{Number of coconuts}& 10& 27& 19& 6& 2\end{array}$

  Estimate the mode of the frequency distribution above.

  Options:
  A) 13.2g
  B) 15.0g
  C) 16.8g
  D) 17.5g
  Show Answer
  The correct answer is C .
• Question 1253: Find ($\frac{1}{0.06}÷\frac{1}{0.042}$)^-1 Options:
  A) 1.43
  B) 1.53
  C) 3.14
  D) 4.42
  Show Answer
  The correct answer is A .
• Question 1254: Make y the subject of the formula Z = x² + $\frac{1}{y^3}$ Options:
  A) y = $\frac{1}{(z-x^2{)}^3}$
  B) y = $\frac{1}{(z+x^2)\frac{1}{3}}$
  C) y = $\frac{1}{(z{x}^2)\frac{1}{3}}$
  D) y = $3\sqrt{z-x^2}$
  Show Answer
  The correct answer is D .
• Question 1255: If sin 30° = 0.5, what is the cosine of its complement? Options:
  A) -0.866
  B) -0.5
  C) 0.0.5
  D) 0.866
  E) 1
  Show Answer
  The correct answer is C .
• Question 1256: Simplify 3$\frac{1}{3}$ - 1$\frac{1}{4}$ x $\frac{2}{3}$ + 1$\frac{2}{5}$ Options:
  A) 2
  B) 3
  C) 4
  D) 5
  Show Answer
  The correct answer is C .
• Question 1257: What is log₇(49^a) - log₁₀(0.01)? Options:
  A) $\frac{{49}^a}{100}$
  B) $\frac{a}{2}$ + 2
  C) 7^2a + 2
  D) 2a + 2
  E) $\frac{2a}{2}$
  Show Answer
  The correct answer is D .
• Question 1258:

  

  The figure is a solid with the trapezium PQRS as its uniform cross-section. Find its volume

  Options:
  A) 120m²
  B) 576m³
  C) 816m³
  D) 1056m³
  Show Answer
  The correct answer is C .
• Question 1259: 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 1260: 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 .