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 641: The numbers 3, 2, 8, 5, 7, 12, 9 and 14 are the marks scored by a group of students in a class test. If P is scored by an group of students in a class test. If P is the mean and Q the median, the P + Q is Options:
  A) 18
  B) 17$\frac{1}{2}$
  C) 16
  D) 15
  Show Answer
  The correct answer is D .
• Question 642: Make $\frac{a}{x}$ the subject of formula $\frac{x+1}{x-a}$ Options:
  A) $\frac{m-1}{m+1}$
  B) $\frac{m+1}{1-m}$
  C) $\frac{m-1}{1+m}$
  D) $\frac{m+1}{m-1}$
  Show Answer
  The correct answer is A .
• Question 643:

  

  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 644: The locus of a point which moves so that it is equidistant from two intersecting straight lines is the Options:
  A) perpendicular bisector of the two lines
  B) angle bisector of the two lines
  C) bisector of the two lines
  D) line parallel to the two lines
  Show Answer
  The correct answer is B .
• Question 645: A set of data contains a total of 130 items which are divided into six groups for display on a pie chart. If one group contains 26 items, then the sector representing this group on the pie chart contains an angle x^o at the centre of the circle where x is Options:
  A) 36^o
  B) 60^o
  C) 70^o
  D) 72^o
  E) 75^o
  Show Answer
  The correct answer is D .
• Question 646: A bag contains 5 black, 4 white and x red marbles. If the probability of picking a red marble is ²/₃, find the value of x Options:
  A) 8
  B) 10
  C) 4
  D) 6
  Show Answer
  The correct answer is D .
• Question 647: Evaluate $\frac{1.25\times 0.025}{0.05}$, correct to 1 decimal place Options:
  A) 0.6
  B) 6.2
  C) 6.3
  D) 0.5
  Show Answer
  The correct answer is A .
• Question 648: A chord XY of a circle with centre O and radius 5.32cm has ∠XOY = 140°. What is the length of the chord to the nearest centimetre? Options:
  A) 10cm
  B) 6cm
  C) 5cm
  D) 3cm
  E) 1cm
  Show Answer
  The correct answer is A .
• Question 649: A flagpole is placed at the top of a tower. The angles of elevation of the bottom and top of the flagpole from a point on the ground 10m away are 40° and 50° respectively. Find the length of the flagpole. Options:
  A) 1.8m
  B) 3.5m
  C) 8.4m
  D) 11.9m
  E) 17.3m
  Show Answer
  The correct answer is B .
• Question 650:

  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 .