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 2121: Simplify (0.09)² and give your answer correct to 4 significant figures Options:
  A) 0.81
  B) 0.081
  C) 0.0081
  D) 8.0001
  Show Answer
  The correct answer is C .
• Question 2122: If x² + 4 = 0, then x ? Options:
  A) 4
  B) -4
  C) 2
  D) -2
  E) None of the above
  Show Answer
  The correct answer is E .
• Question 2123:

  

  Find the length XZ in the triangle

  Options:
  A) $\sqrt{7m}$
  B) $\sqrt{6m}$
  C) $\sqrt{5m}$
  D) $\sqrt{3m}$
  Show Answer
  The correct answer is A .
• Question 2124: A man 1.7m tall observes a bird on top of a tree at an angle of 30⁰. if the distance between the man's head and the bird is 25m, what is the height of the tree? Options:
  A) 26.7m
  B) 14.2m
  C) $1.7+(25\frac{\sqrt{3}}{3}m$
  D) $1.7+(25\frac{\sqrt{2}}{2}m$
  Show Answer
  The correct answer is C .
• Question 2125: Simplify ($\sqrt{2}+\frac{1}{\sqrt{3}})(\sqrt{2}-\frac{1}{\sqrt{3}}$) Options:
  A) $\frac{7}{3}$
  B) $\frac{5}{3}$
  C) $\frac{5}{2}$
  D) $\frac{3}{2}$
  Show Answer
  The correct answer is B .
• Question 2126:

  

  In the figure, PQ is a parallel to ST and QRS = 40${}^{\circ }$. Find the value of x.

  Options:
  A) 55${}^{\circ }$
  B) 60${}^{\circ }$
  C) 65${}^{\circ }$
  D) 75${}^{\circ }$
  Show Answer
  The correct answer is A .
• Question 2127: The ratio of the base area of a hollow cone to that of its curved surface is 1:4. If its base radius is 7cm, calculate the slant height of the cone Options:
  A) 7cm
  B) 22cm
  C) 28cm
  D) 49cm
  E) 154cm
  Show Answer
  The correct answer is C .
• Question 2128: A sector of angle 120° is cut out from a circle of radius 13.5cm. what area of the circle is remaining ? (π = $\frac{22}{7}$) Options:
  A) 14.1cm²
  B) 95.5cm²
  C) 190.9cm²
  D) 381.9cm²
  E) 763.7cm²
  Show Answer
  The correct answer is D .
• Question 2129: 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 2130: Find the distance between the point Q (4,3) and the point common to the lines 2x - y = 4 and x + y = 2 Options:
  A) 3√10
  B) 3√5
  C) √26
  D) √13
  Show Answer
  The correct answer is D .