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 1771: Find the slope of the curve y = 2x²n+ 5x - 3 at (1, 4). Options:
  A) 4
  B) 6
  C) 7
  D) 9
  Show Answer
  The correct answer is D .
• Question 1772: The first term of a G.P is 7. Find its 4th term, if its common ratio is 3. Options:
  A) 567
  B) 280
  C) 189
  D) 63
  E) 21
  Show Answer
  The correct answer is C .
• Question 1773:

  If (x - a) is a factor of bx - ax + x², find the other factor.

  Options:
  A) (x + b)
  B) (x - b)
  C) (a + b)
  D) (a - b)
  Show Answer
  The correct answer is A .
• Question 1774: Find the surface area of a sphere whose radius is 3.5cm, correct your answer to one decimal place (π = $\frac{22}{5}$) Options:
  A) 12.8cm²
  B) 25.7cm²
  C) 77.0cm²
  D) 154.0cm²
  E) 179.7cm²
  Show Answer
  The correct answer is D .
• Question 1775: When a dealer sells a bicycle for ₦81 he makes a profit of 80%. What did he pay for the bicycle? Options:
  A) ₦73
  B) ₦74.52
  C) ₦75
  D) ₦87.48
  E) ₦75.52
  Show Answer
  The correct answer is C .
• Question 1776:

  find the range of values of values of r which satisfies the following inequality, where a, b and c are positive $\frac{r}{a}$ + $\frac{r}{b}$ + $\frac{r}{c}$ > 1

  Options:
  A) r > $\frac{abc}{bc+ac+ab}$
  B) r < abc
  C) r > $\frac{1}{a}$ + $\frac{1}{b}$ + $\frac{1}{c}$
  D) r < $\frac{1}{abc}$
  Show Answer
  The correct answer is A .
• Question 1777: Solve for x in the quadratic equation. 2x² + 12x + 10 = 0 Options:
  A) x = -5, -1
  B) x = -5,1
  C) x = -3, -2
  D) x = 3, 2
  E) x = 6, 5
  Show Answer
  The correct answer is A .
• Question 1778:

  

  From the figure above, what is the value of p?

  Options:
  A) 135${}^{\circ }$
  B) 90${}^{\circ }$
  C) 60${}^{\circ }$
  D) 45${}^{\circ }$
  Show Answer
  The correct answer is B .
• Question 1779: A binary operation defines $\ast$ on the set of positive integers is such that x $\ast$ y = 2x - 3y + 2 for all positive integers x and y. The binary operation is Options:
  A) commutative and closed on the set of positive integers
  B) neither commutative nor closed on the set of positive integers
  C) commutative but not closed on the set of positive integers
  D) not commutative but closed on the set of positive integers
  Show Answer
  The correct answer is B .
• Question 1780: If M represents the median and D the mode of the measurements 5, 9, 3, 5, 8 then (M, D) is Options:
  A) (6, 5)
  B) (5, 8)
  C) (5, 7)
  D) (5, 5)
  E) (7, 5)
  Show Answer
  The correct answer is D .