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 811: The diameter of a metal rod is measured as 23.40 cm to four significant figures. What is the maximum error in the measurement? Options:
  A) 0.05cm
  B) 0.5cm
  C) 0.045cm
  D) 0.005cm
  E) 0.004cm
  Show Answer
  The correct answer is D .
• Question 812:

  Find the value of t, if the distance between the points P(3, 14) and Q(t, 5) is 9 units.

  Options:
  A) 3
  B) 2
  C) - 3
  D) - 2
  Show Answer
  The correct answer is C .
• Question 813: The locus of a point which is equidistant from the line PQ forms a Options:
  A) circle centre P
  B) pair of parallel lines each opposite to PQ
  C) circle centre Q
  D) perpendicular line to PQ
  Show Answer
  The correct answer is D .
• Question 814: The variance of the scores 1, 2, 3, 4, 5 is Options:
  A) 1, 2
  B) 1, 4
  C) 2.0
  D) 3.0
  Show Answer
  The correct answer is C .
• Question 815:

  A binary operation on the set of real numbers excluding -1 is such that sor all m, n $\epsilon$ R, m $\mathrm{\Delta }$ n = m + n + mn. Find the identity element of the operation.

  Options:
  A) 1
  B) -$\frac{1}{2}$
  C) -1
  D) 0
  Show Answer
  The correct answer is D .
• Question 816: If a function is defined by $f(x+1)=3x^2-x+4$, find $f(0)$ Options:
  A) 4
  B) 6
  C) 8
  D) 2
  Show Answer
  The correct answer is D .
• Question 817: I how many was can the letters of the word ELATION be arranged? Options:
  A) 6!
  B) 7!
  C) 5!
  D) 8!
  Show Answer
  The correct answer is B .
• Question 818:

  

  The mean score is

  Options:
  A) 7.0
  B) 8.7
  C) 9.5
  D) 11.0
  Show Answer
  The correct answer is B .
• Question 819: If f(x - 2) = 4x² + x + 7, find f(1) Options:
  A) 12
  B) 27
  C) 7
  D) 46
  E) 17
  Show Answer
  The correct answer is D .
• Question 820: If (159.75)₁₀ = (y)₆. Find x Options:
  A) x₆ = 123.34₆
  B) x₆ = 424.5₆
  C) x₆ = 122.43₆
  D) x₆ = 124.45₆
  Show Answer
  The correct answer is B .