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 1601: Which of the following is a factor of 15 + 7x - 2x² Options:
  A) x + 3
  B) x - 3
  C) x - 5
  D) x + 5
  Show Answer
  The correct answer is C .
• Question 1602: Integrate $\frac{2x^3+2x}{x}$ with respect to x Options:
  A) $\frac{2x^3}{3}$ - 2x + k
  B) x³ + 2x + k
  C) $\frac{2x^3}{3}$ + 2x + k
  D) x³ - 2x + k
  Show Answer
  The correct answer is C .
• Question 1603: If y = $(x^2+3x-1)÷(3x+4).$ Find dy/dx Options:
  A) $(3x^2+8x+7)÷(3x+4{)}^2$
  B) $x^2+2x+(1÷(x+1{)}^2)$
  C) $2x^2+4x+(1÷(2x+4{)}^2)$
  D) $x^2+3x+(2÷(x+3{)}^2)$
  Show Answer
  The correct answer is A .
• Question 1604: Two perpendicular lines PQ and QR intersect at (1, -1). If the equation of PQ is x - 2y + 4 = 0, find the equation of QR Options:
  A) x + 2y - 1= -0
  B) 2x + y - 3 = 0
  C) x - 2y - 3 = 0
  D) 2x + y - 1
  Show Answer
  The correct answer is D .
• Question 1605: A binary operation Δ is defined by aΔb = a + b + 1 for any numbers a and b. Find the inverse of the real number 7 under the operation Δ, if the identity element is -1 Options:
  A) -7
  B) -9
  C) 5
  D) 9
  Show Answer
  The correct answer is B .
• Question 1606:

  What is the rate of change of the volume Vof a hemisphere with respect to its radius r when r = 2?

  Options:
  A) 8π
  B) 16π
  C) 2π
  D) 4π
  Show Answer
  The correct answer is A .
• Question 1607: If a² + b² = 16 and 2ab = 7.Find all the possible values of (a - b) Options:
  A) 3, -3
  B) 2, -2
  C) 1, -1
  D) 3, -1
  Show Answer
  The correct answer is A .
• Question 1608: Multiply (3x + 5y + 4z) by (2x - 3y + z) Options:
  A) 6x² + xy - 15y² + 4z² + 11xz - 7yz
  B) 6x² + 3xy - 15y² + 4z²
  C) 6x² + 3xy - y² + 4z²
  D) 6x² + 3xy - 15y + z²
  Show Answer
  The correct answer is A .
• Question 1609: If f(x - 2) = 3x² + 4x + 1. Find the area of the sector Options:
  A) 8
  B) 40
  C) 7
  D) 24
  E) 32
  Show Answer
  The correct answer is B .
• Question 1610: Find $\frac{dy}{dx}$, if y = $\frac{2}{3}$ X³ - $\frac{4}{x}$ Options:
  A) 3x² - $\frac{4}{x}$
  B) 2x² +$\frac{4}{x^2}$
  C) 3x² + $\frac{4}{x^2}$
  D) 2x² - $\frac{4}{x}$
  Show Answer
  The correct answer is B .