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 1471: Simplify 5$\sqrt{18}$ - 3$\sqrt{72}$ + 4$\sqrt{50}$ Options:
  A) 17$\sqrt{4}$
  B) 4$\sqrt{17}$
  C) 17$\sqrt{2}$
  D) 12$\sqrt{4}$
  Show Answer
  The correct answer is C .
• Question 1472: Resolve $\frac{3}{x^2+x-2}$ into partial fractions Options:
  A) $\frac{1}{x-1}+\frac{1}{x+2}$
  B) $\frac{1}{x+1}+\frac{1}{x-2}$
  C) $\frac{1}{x+1}-\frac{1}{x-2}$
  D) $\frac{1}{x-2}+\frac{1}{x+2}$
  Show Answer
  The correct answer is A .
• Question 1473: The radius of a circle is increasing at the rate of 0.02cms^-1. Find the rate at which the area is increasing when the radius of the circle is 7cm. Options:
  A) 0.75cm²S^-1
  B) 0.53cm²S^-1
  C) 0.35cm²S^-1
  D) 0.88cm²S^-1
  Show Answer
  The correct answer is D .
• Question 1474:

  

  If PN is perpendicular to QR, find the value of tan x.

  Options:
  A) $\frac{5}{9}$
  B) $\frac{3}{5}$
  C) $\frac{3}{4}$
  D) $\frac{4}{3}$
  E) $\frac{5}{3}$
  Show Answer
  The correct answer is B .
• Question 1475: Given that cos z = L , whrere z is an acute angle, find an expression for $\frac{\text{cot z - cosec z}}{\text{sec z + tan z}}$ Options:
  A) $\frac{1-L}{1+L}$
  B) $\frac{L^2\sqrt{3}}{1+L}$
  C) $\frac{1+L^3}{L^2}$
  D) $\frac{L(L-1)}{1-L+1\sqrt{1-L^2}}$
  Show Answer
  The correct answer is D .
• Question 1476: Find the mid point of S(-5, 4) and T(-3, -2) Options:
  A) -4, 2
  B) 4, -2
  C) -4, 1
  D) 4, -1
  Show Answer
  The correct answer is C .
• Question 1477: Given log 2 = 0.69, log3 = 1, 10 and log7 = 1.90, all to a fixed base, find log 10.5 to the same base without using tables. Options:
  A) 1.03
  B) 2.31
  C) 3.69
  D) 10.5
  E) 25
  Show Answer
  The correct answer is B .
• Question 1478: What is the circumference of latitude 0^oS if R is the radius of the earth? Options:
  A) R cos$\theta$
  B) 2$\pi$ R cos $\theta$
  C) R sin $\theta$
  D) 2$\pi$ R sin $\theta$
  Show Answer
  The correct answer is B .
• Question 1479:

  Each of the interior angles of a regular polygon is 140°. How many sides has the polygon?

  Options:
  A) 9
  B) 8
  C) 7
  D) 5
  Show Answer
  The correct answer is A .
• Question 1480:

  Evaluate $\frac{0.8\times 0.43\times 0.031}{0.05\times 0.72\times 0.021}$ correct to four significant figures.

  Options:
  A) 14.09
  B) 14.1
  C) 14.12
  D) 14.11
  Show Answer
  The correct answer is D .