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 1451:

  How many sides has a regular polygon whose interior angles are 120° each?

  Options:
  A) 4
  B) 5
  C) 6
  D) 3
  Show Answer
  The correct answer is C .
• Question 1452: A bag contains 5 blacks balls and 3 red balls. Two balls are picked at random without replacement. What is the probability that a black and red balls are picked? Options:
  A) 15/28
  B) 13/28
  C) 5/14
  D) 3/14
  Show Answer
  The correct answer is A .
• Question 1453: 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 1454: Twenty girls and y boys sat on an examination. The mean marks obtained by the girls and boys were 52 and 57 respectively. if the total score for both girls and boys was 2950, find y. Options:
  A) 51
  B) 48
  C) 30
  D) 25
  E) 18
  Show Answer
  The correct answer is C .
• Question 1455: 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 1456: Simplify 4 - $\frac{1}{2-\sqrt{3}}$ Options:
  A) 2$\sqrt{3}$
  B) -2 - $\sqrt{3}$
  C) -2 + $\sqrt{3}$
  D) 2 - $\sqrt{3}$
  Show Answer
  The correct answer is D .
• Question 1457: If the quadratic function 3x² - 7x + R is a perfect square, find R Options:
  A) $\frac{49}{24}$
  B) $\frac{49}{12}$
  C) $\frac{49}{13}$
  D) $\frac{49}{3}$
  E) $\frac{49}{36}$
  Show Answer
  The correct answer is B .
• Question 1458: Simplify $\frac{1}{x^2+5x+6}$ + $\frac{1}{x^2+3x+2}$ Options:
  A) $\frac{x}{(x+2)(x-3)}$
  B) $\frac{2}{(x+5)(x-3)}$
  C) $\frac{2}{(x+1)(x+3)}$
  D) $\frac{2}{(x-1)(x-3)}$
  Show Answer
  The correct answer is C .
• Question 1459: At what value of x does the function y= -3 – 2x +x2 attain a minimum value? Options:
  A) 4
  B) 2
  C) -1
  D) -4
  E) 1
  Show Answer
  The correct answer is E .
• Question 1460: What is the number whose logarithm to base 10 is 2.3482? Options:
  A) 223
  B) 2228
  C) 2.235
  D) 22.37
  E) 0.2229
  Show Answer
  The correct answer is E .