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 1191:

  If n(P) = 20 and n(Q) = 30 and n(PuQ) = 40, find the value n(PnQ)

  Options:
  A) 10
  B) 30
  C) 15
  D) 40
  Show Answer
  The correct answer is A .
• Question 1192:

  

  In the circle above, with centre O and radius 7 cm. Find the length of the arc AB, when < AOB = 57°.

  Options:
  A) 5.32 cm
  B) 4.39 cm
  C) 7.33 cm
  D) 6.97 cm
  Show Answer
  The correct answer is D .
• Question 1193: If x is a positive real number, find the range of values for which $\frac{1}{3x}$ + $\frac{1}{2}$ > $\frac{1}{4x}$
  Options:
  A) 0 > -$\frac{1}{6}$
  B) x > 0
  C) 0 < x < 4
  D) 0 < x < $\frac{1}{6}$
  Show Answer
  The correct answer is D .
• Question 1194: Differentiate (cos θ - sin θ)² Options:
  A) -2 cos 2θ
  B) -2 sin2θ
  C) 1 - 2 cos 2θ
  D) 1 - 2 sin 2θ
  Show Answer
  The correct answer is A .
• Question 1195: Marks scored by some children in an arithmetic test are:5, 3, 6, 9, 4, 7, 8, 6, 2, 7, 8, 4, 5, 2, 1, 0, 6, 9, 0, 8.
  The arithmetic mean of the marks is Options:
  A) 6
  B) 5
  C) 8
  D) 7
  E) 10
  Show Answer
  The correct answer is B .
• Question 1196: A book seller sells Mathematics and English books. If 30 customers buy Mathematics books, 20 customers buy English books and 10 customers buy the two books, How many customers has he altogether. Options:
  A) 30
  B) 40
  C) 50
  D) 60
  Show Answer
  The correct answer is B .
• Question 1197: Simplify (25)^-1/₂ x (27)¹/₃ + (121)^-1/₂ x (625)^-1/₄ Options:
  A) ³⁴/₅₅
  B) ⁹/₁₁
  C) ¹⁴/₅
  D) ³/₂₇₅
  Show Answer
  The correct answer is A .
• Question 1198: The midpoint of P(x, y) and Q(8, 6). Find x and y. midpoint = (5, 8) Options:
  A) (2, 10)
  B) (2, 8)
  C) (2, 12)
  D) (2, 6)
  Show Answer
  The correct answer is A .
• Question 1199:

  

  In the diagram, XZ is the diameter of the circle XYZW, with centre O and radius $\frac{15}{2}$cm. If XY = 12cm, find the area of the triangle XYZ

  Options:
  A) 45cm³
  B) 27cm³
  C) 75cm³
  D) 54cm³
  Show Answer
  The correct answer is D .
• Question 1200: Which of the following is a factor of rs + tr - pt - ps? Options:
  A) (p - s)
  B) (s - p)
  C) r - p)
  D) r + p)
  Show Answer
  The correct answer is C .