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 2671: If cos $\theta$ = $\frac{x}{y}$, find cosec$\theta$ Options:
  A) $\frac{1}{y}$(x² + y²)
  B) $\frac{x}{y}$
  C) $\frac{1}{y}$$\sqrt{x^2+y^2}$
  D) $\frac{x-y}{y}$
  Show Answer
  The correct answer is C .
• Question 2672: Simplify 3 ${}^{n-1}$ × 27 $\frac{n+1}{{81}^n}$ Options:
  A) 3${}^{2n}$
  B) 9
  C) 3ⁿ
  D) 3 ${}^{n+1}$
  Show Answer
  The correct answer is B .
• Question 2673: Factorize completely 4abx - 2axy -12b²x + 6bxy Options:
  A) 2x(a - 3b)(2b - y)
  B) 2x(3b - a)(2b - y)
  C) 2x(a - 3b)(y - 2b)
  D) 2x(2b - a)(3b - y)
  Show Answer
  The correct answer is A .
• Question 2674:

  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 2675: If x₁₀ = 1214₅ find x Options:
  A) 124
  B) 121
  C) 184
  D) 180
  Show Answer
  The correct answer is C .
• Question 2676: x varies directly as y and inversely as z. when x = 5, y = 2 and z = 1. What is the value of x when y = 5 and z = 2? Options:
  A) 2.5
  B) 5
  C) 6.25
  D) 6.52
  E) 7.5
  Show Answer
  The correct answer is C .
• Question 2677: Find the value of k if y - 1 is a factor of y³ + 4y² + ky - 6 Options:
  A) -6
  B) -4
  C) O
  D) 1
  Show Answer
  The correct answer is D .
• Question 2678: ($\sqrt{2}+4\sqrt{2}$) ($\sqrt{3}+\sqrt{2}$) ($\sqrt{3}+\sqrt{2}$) is equal to Options:
  A) 1
  B) ($\sqrt{2}+4\sqrt{2}$)
  C) (6$\sqrt{2}$
  D) 8
  Show Answer
  The correct answer is A .
• Question 2679: A market woman sells oil in cylindrical tins 10cm deep and 6cm in diameter at ₦15.00 each. If she bought a full cylindrical jug 18cm deep and 10cm in diameter for ₦50.00, how much did she make by selling all the oil? Options:
  A) ₦62.50
  B) ₦35.00
  C) ₦31.00
  D) ₦25.00
  Show Answer
  The correct answer is D .
• Question 2680:

  

  The pie chart above shows the expenditure of a family whose income is N30.000. If the expenditure on food is twice that on housing and that on school fees is twice that on transport, how much does the family spend on food?

  Options:
  A) N28,000
  B) N12,500
  C) N15,000
  D) N25,000
  Show Answer
  The correct answer is B .