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 2491:

  Find a positive value of ã if the coordinate of the centre of a circle X²+y²-2ãx+4y-ã = 0 is (ã,-2) and the radius is 4 units.

  Options:
  A) 1
  B) 2
  C) 3
  D) 4
  Show Answer
  The correct answer is C .
• Question 2492:

  

  The table above shows the distribution of recharge cards of four major GSM operators. What is the probability that a recharge card selected at random will be GTN or Qtel?

  Options:
  A) 3/20
  B) 1/4
  C) 2/5
  D) 3/4
  Show Answer
  The correct answer is C .
• Question 2493: Factorize 2t² + t - 15 Options:
  A) (2t - 3)(t + 5)
  B) (t + 3)(2t - 5)
  C) (t + 3)(t - 5)
  D) (2t + 3)(t - 5)
  Show Answer
  The correct answer is B .
• Question 2494: A cone is formed by bending a sector of a circle having an angle of 210^o. Find the radius of the base of the cone if the diameter of the circle is 12cm. Options:
  A) 12cm
  B) 7.00cm
  C) 1.75cm
  D) 21cm
  E) 3.50cm
  Show Answer
  The correct answer is E .
• Question 2495: Factorize completely ac - 2bc - a + 4b² Options:
  A) (a - 2b)(c - a - 2b)
  B) (a - 2b)(c + a +2b)
  C) (a - 2b)(c - a + 2b)
  D) (a - 2b)(c + a - 2b)
  Show Answer
  The correct answer is A .
• Question 2496:

  Evaluate ${1011}_{two}$ + ${1101}_{two}$ + ${1001}_{two}$ - ${111}_{two}$

  Options:
  A) 10001${}_{two}$
  B) 11001${}_{two}$
  C) 110001${}_{two}$
  D) 11010${}_{two}$
  E) 10001${}_{two}$
  Show Answer
  The correct answer is D .
• Question 2497:

  

  Find the area of the figure given

  Options:
  A) 12.5cm²
  B) 75.0cm²
  C) 78.5cm²
  D) 84.8cm²
  Show Answer
  The correct answer is D .
• Question 2498: Simplify $\frac{\sqrt{1+x}+\sqrt{x}}{\sqrt{1+x}-\sqrt{x}}$ Options:
  A) -2x - 2$\sqrt{x(1+x)}$
  B) 1 + 2x + 2$\sqrt{x(1+x)}$
  C) $\sqrt{x(1+x)}$
  D) 1 + 2x - 2$\sqrt{x(1+x)}$
  Show Answer
  The correct answer is B .
• Question 2499: Solve the system of equations: $2^{x+y}=32,3^{3y-x}=27$ Options:
  A) (3, 2)
  B) (-3, 2)
  C) (3, -2)
  D) (-3, -2)
  E) (2, 2)
  Show Answer
  The correct answer is A .
• Question 2500: Calculate the area of a parallelogram whose diagonals are of length 8cm and 12cm and intersect at an angle of 135° Options:
  A) 271.5cm²
  B) 135.8cm²
  C) 96.0cm²
  D) 48.0cm²
  E) 33.9cm²
  Show Answer
  The correct answer is E .