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 581: 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 582: Find the area bounded by the curve y = 3x${}^2$ - 2x + 1, the coordinates x = 1 and x = 3 and the x-axis Options:
  A) 24
  B) 22
  C) 21
  D) 20
  Show Answer
  The correct answer is D .
• Question 583: Five people are to be arranged in a row for a group photograph. How many arrangements are the if a married couple in the group insist on sitting next to each other? Options:
  A) 48
  B) 24
  C) 20
  D) 10
  Show Answer
  The correct answer is C .
• Question 584: The binary operation $\oplus$ defined on the set of real numbers is such that x $\oplus$ y = $\frac{xy}{6}$ for all x, y $ϵ$ R. Find the inverse of 20 under this operation when the identity element is 6 Options:
  A) $\frac{9}{5}$
  B) $\frac{1}{20}$
  C) $\frac{10}{3}$
  D) $\frac{1}{12}$
  Show Answer
  The correct answer is B .
• Question 585: A rectangular polygon of (2k + 1) sides has 140^o as the size of each interior angle. Find k Options:
  A) 4
  B) 4$\frac{1}{2}$
  C) 8
  D) 8$\frac{1}{2}$
  Show Answer
  The correct answer is A .
• Question 586: The radii of two similar cylindrical jugs are in the ratio 3:7. Calculate the ratio of their volumes Options:
  A) 1 : 04
  B) 3 : 07
  C) 9 : 49
  D) 0.086111111
  E) 27 : 343
  Show Answer
  The correct answer is E .
• Question 587: The ratio of the base area of a hollow cone to that of its curved surface is 1:4. If its base radius is 7cm, calculate the slant height of the cone Options:
  A) 7cm
  B) 22cm
  C) 28cm
  D) 49cm
  E) 154cm
  Show Answer
  The correct answer is C .
• Question 588:

  If P varies inversely as V and V varies directly as R², find the relationship between P and R given that R = 7 when P = 2.

  Options:
  A) P = 98R²
  B) PR² = 98
  C) P = $\frac{1}{98R^2}$
  D) P = $\frac{P{R}^2}{98}$
  Show Answer
  The correct answer is B .
• Question 589:

  

  From the cyclic quadrilateral above, find < TVS

  Options:
  A) 60^o
  B) 80^o
  C) 70^o
  D) 50^o
  Show Answer
  The correct answer is B .
• Question 590:

  

  Use the cumulative frequency curve to answer the question.
  What is the 80th percentile?

  Options:
  A) 45.5
  B) 46.5
  C) 47.5
  D) 48.5
  Show Answer
  The correct answer is C .