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 1811: If the minimum value of y = 1 + hx - 3x² is 13, find h. Options:
  A) 13
  B) 12
  C) 11
  D) 10
  Show Answer
  The correct answer is B .
• Question 1812: 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 1813: 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 1814: If x + $\frac{1}{x}$ = 4, find x² + $\frac{1}{x^2}$ Options:
  A) 16
  B) 14
  C) 12
  D) 9
  Show Answer
  The correct answer is B .
• Question 1815: A tax player is allowed $\frac{1}{8}$th of his income tax-free, and pays 20% on the remainder. If he pays ₦490.00 tax, what is his income? Options:
  A) ₦560.00
  B) ₦2,450.00
  C) ₦2,800.00
  D) ₦3,920.00
  Show Answer
  The correct answer is C .
• Question 1816:

  The chord ST of a circle is equal to the radius r of the circle. Find the length of arc ST

  Options:
  A) $\frac{\pi r}{3}$
  B) $\frac{\pi r}{2}$
  C) $\frac{\pi r}{12}$
  D) $\frac{\pi r}{6}$
  Show Answer
  The correct answer is A .
• Question 1817: Divide the LCM of 15abc and 20a²bc by their HCF Options:
  A) 10a
  B) 12a
  C) 5abc
  D) 12a²bc
  E) 60a²bc
  Show Answer
  The correct answer is B .
• Question 1818:

  A sector of a circle of radius 7.2cm which subtends an angle of 300° at the centre is used to form a cone. What is the radius of the base of the cone?

  Options:
  A) 8cm
  B) 6cm
  C) 9cm
  D) 7cm
  Show Answer
  The correct answer is B .
• Question 1819:

  

  The bar chart above shows the distribution of SS2 students in a school.

  Find the total number of students

  Options:
  A) 180
  B) 135
  C) 210
  D) 105
  Show Answer
  The correct answer is A .
• Question 1820: Show that $\frac{\sin 2x}{1+\cos x}$ + $\frac{sin2}{1-cosx}$ is Options:
  A) sin x
  B) cos²x
  C) 2
  D) 3
  Show Answer
  The correct answer is C .