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 921: A rectangular polygon has 150^o as the size of each interior angle. How many sides has the polygon? Options:
  A) 12
  B) 10
  C) 9
  D) 8
  Show Answer
  The correct answer is A .
• Question 922: Twenty girls and y boys sat on an examination. The mean marks obtained by the girls and boys were 52 and 57 respectively. if the total score for both girls and boys was 2950, find y. Options:
  A) 51
  B) 48
  C) 30
  D) 25
  E) 18
  Show Answer
  The correct answer is C .
• Question 923:

  The locus of a point which moves so that it is equidistant from two intersecting straight lines is the

  Options:
  A) bisector of the two lines
  B) line parallel to the two lines
  C) angle bisector of the two lines
  D) perpendicular bisector of the two lines
  Show Answer
  The correct answer is A .
• Question 924:

  Find x if log${}_9$x = 1.5

  Options:
  A) 27
  B) 15
  C) 3.5
  D) 32
  Show Answer
  The correct answer is A .
• Question 925: One bag contain 3 blue and 5 red balls, another bag contain 2 blue and 4 red balls respectively. One ball is drawn for each bag. What is the probability both balls are blue Options:
  A) $\frac{2}{15}$
  B) $\frac{3}{24}$
  C) $\frac{3}{21}$
  D) $\frac{3}{28}$
  Show Answer
  The correct answer is D .
• Question 926: If the locus of the points which are equidistant from points P and Q meets line PQ at point N, then PN equals Options:
  A) 2NQ
  B) NQ
  C) $\frac{1}{4}$NQ
  D) $\frac{1}{2}$NQ
  Show Answer
  The correct answer is B .
• Question 927:

  Find the probability that a number selected at random from 40 to 50 is a prime.

  Options:
  A) $\frac{3}{11}$
  B) $\frac{5}{11}$
  C) $\frac{3}{11}$
  D) $\frac{4}{11}$
  Show Answer
  The correct answer is C .
• Question 928:

  If the universal set μ = {x : 1 ≤ x ≤ 20} and

  A = {y : multiple of 3}

  B = |z : odd numbers}

  Find A ∩ B

  Options:
  A) {1, 3, 6}
  B) {3, 5, 9, 12}
  C) {3, 9, 15}
  D) {2, 3, 9}
  Show Answer
  The correct answer is C .
• Question 929:

  Evaluate ∫${}_1^2$ $\frac{5}{x}$ dx

  Options:
  A) 1.47
  B) 2.67
  C) 3.23
  D) 3.47
  Show Answer
  The correct answer is D .
• Question 930:

  

  In the diagram MN is a chord of a circle KMN centre O and radius 10cm. If < MON = 140^o, find, correct to the nearest cm, the length of the chord MN.

  Options:
  A) 19cm
  B) 18cm
  C) 17cm
  D) 12cm
  Show Answer
  The correct answer is A .