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 2401: simplify $\frac{6^{2n+1}\times 9^n\times 4^{2n}}{{18}^n\times 2^n\times {12}^{2n}}$ Options:
  A) 3²ⁿ
  B) 3 x 2^{3n - 1}
  C) 2ⁿ
  D) 6
  E) 1
  Show Answer
  The correct answer is D .
• Question 2402:

  

  The result of tossing a fair die 120 times is summarized above. Find the value of x

  Options:
  A) 19
  B) 20
  C) 21
  D) 22
  Show Answer
  The correct answer is B .
• Question 2403: If the mean of the numbers 0, (x+2), (3x+6), and (4x+8) is 4, find their mean deviation. Options:
  A) zero
  B) 2
  C) 3
  D) 4
  Show Answer
  The correct answer is C .
• Question 2404: What is the mean deviation of x, 2x, x+1 and 3x. If their mean is 2? Options:
  A) 0.5
  B) 1.0
  C) 1.5
  D) 2.0
  Show Answer
  The correct answer is A .
• Question 2405: Simplify $\frac{a-b}{a+b}$ - $\frac{a+b}{a-b}$ Options:
  A) $\frac{4ab}{a-b}$
  B) $\frac{-4ab}{a^2-b^2}$
  C) $\frac{-4ab}{a^{-2}-b}$
  D) $\frac{4ab}{a^{-2}-b^{-2}}$
  Show Answer
  The correct answer is B .
• Question 2406:

  If $\frac{3-\sqrt{3}}{2+\sqrt{3}}=a+b\sqrt{3}$, what are the values a and b?

  Options:
  A) a = 9, b = -5
  B) a = 5, b = 9
  C) a = 9, b = 5
  D) a = -5, b = 9
  Show Answer
  The correct answer is A .
• Question 2407: The slope of the tangent to the curve $y=2x^2-2x+5$ at the point $(1,6)$ is Options:
  A) 4
  B) 1
  C) 6
  D) 5
  E) 3
  Show Answer
  The correct answer is C .
• Question 2408: 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 2409:

  Evaluate $\frac{2{\log }_{3}9\times {\log }_3{81}^{-2}}{{\log }_{5}625}$

  Options:
  A) 4
  B) -32
  C) -8
  D) 16
  Show Answer
  The correct answer is C .
• Question 2410:

  Evaluate $\frac{12.02\times 20.06}{26.04\times 60.06}$, correct to three significant figures.

  Options:
  A) 0.157
  B) 0.154
  C) 0.155
  D) 0.158
  Show Answer
  The correct answer is B .