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 2721: 2 bags of sugar at N_x per bag are mixed with 3 bags of sugar at N_y per bag. What is the cost in N of the mixture per bag? Options:
  A) $\frac{(2x+3y)}{5}$
  B) $\frac{(x+y)}{2}$
  C) $\frac{x}{2}+\frac{y}{3}$
  D) $\frac{(x+y)}{5}$
  E) $\frac{(3x+2y)}{5}$
  Show Answer
  The correct answer is A .
• Question 2722: What is the positive difference between the squares of 2.5 and 2.1 to 1 significant figures? Options:
  A) – 2.0
  B) – 184
  C) -1.84
  D) 2
  E) 18.4
  Show Answer
  The correct answer is D .
• Question 2723: If $x–1$ and $x+1$ are both factors of the equation $x^3+p{x}^2+qx+6=0$, evaluate $p$ and $q$ Options:
  A) 6, -1
  B) 6, 1
  C) 1, -1
  D) 6, -6
  E) -6, -1
  Show Answer
  The correct answer is E .
• Question 2724:

  

  Find the value of l in the frustrum above

  Options:
  A) 5cm
  B) 6cm
  C) 7cm
  D) 8cm
  Show Answer
  The correct answer is A .
• Question 2725: Factorize complete;y (4x+3y)² - (3x-2y)² Options:
  A) (x+5y)(7x+y)
  B) (x+5y)(7x-y)
  C) (x-5y)(7x+y)
  D) (x-5y)(7x-y)
  Show Answer
  The correct answer is A .
• Question 2726: A school boy lying on the ground 30m away from the foot of a water tank tower observes that the angle of elevation of the top of the tank 60^o. Calculate the height of the water tank. Options:
  A) 60m
  B) 30 $\sqrt{3}$m
  C) 20 $\sqrt{3}$m
  D) 10 $\sqrt{3}$m
  Show Answer
  The correct answer is B .
• Question 2727: p varies directly as the square of q and inversely as r. If p = 36, when q = 36, when q = 3 and r = 4, find p when q = 5 and r = 2 Options:
  A) 72
  B) 100
  C) 90
  D) 200
  E) 125
  Show Answer
  The correct answer is D .
• Question 2728:

  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 2729:

  

  If O is the centre of the circle in the figure, find the value of x

  Options:
  A) 50
  B) 260
  C) 100
  D) 65
  E) 130
  Show Answer
  The correct answer is C .
• Question 2730: Find the value of α² + β² if α + β = 2 and the distance between points (1, α) and (β, 1)is 3 units Options:
  A) 14
  B) 3
  C) 5
  D) 11
  Show Answer
  The correct answer is D .