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 1141:

  

  In the diagram above, O is the centre of the circle ABC, < ABO = 26° and < BOC = 130°. Calculate < AOC.

  Options:
  A) 26°
  B) 13°
  C) 80°
  D) 102°
  Show Answer
  The correct answer is D .
• Question 1142:

  I. Rectangular bars of equal width

  II. The height of each rectangular bar is proportional to the frequency of the corresponding class interval.

  III. Rectangular bars have common sides with no gaps in between

  A histogram is described completely by

  Options:
  A) I, II and III
  B) I and II
  C) II and III
  D) I and III
  Show Answer
  The correct answer is A .
• Question 1143: If X $\ast$ Y = X + Y - XY, find x when (x $\ast$ 2) + (x $\ast$ 3) = 68 Options:
  A) 24
  B) 22
  C) -12
  D) -21
  Show Answer
  The correct answer is D .
• Question 1144:

  If $-2x^3+6x^2+17x$ - 21 is divided by $(x+1)$, then the remainder is

  Options:
  A) 32
  B) 30
  C) -30
  D) -32
  Show Answer
  The correct answer is C .
• Question 1145: At what real value of x do the curves whose equations are y = x³ + x and y = x² + 1 intersect? Options:
  A) -2
  B) 2
  C) -1
  D) 9
  E) 1
  Show Answer
  The correct answer is E .
• Question 1146:
  

  A trapezium has two parallel sides of lengths 5cm and 9cm. If the area is 91cm${}^2$, find the distance between the parallel sides

  Options:
  A) 13 cm
  B) 4 cm
  C) 6 cm
  D) 7 cm
  Show Answer
  The correct answer is A .
• Question 1147: The binary operation on the set of real numbers is defined by m*n = $\frac{mn}{2}$ for all m, n $\in$ R. If the identity element is 2, find the inverse of -5 Options:
  A) $-\frac{4}{5}$
  B) $-\frac{2}{5}$
  C) 4
  D) 5
  Show Answer
  The correct answer is A .
• Question 1148:

  Which of the following is in descending order?

  Options:
  A) $\frac{9}{10}\frac{4}{5}\frac{3}{4}\frac{17}{20}$
  B) $\frac{4}{5}\frac{9}{10}\frac{3}{4}\frac{17}{20}$
  C) $\frac{9}{10}\frac{17}{20}\frac{4}{5}\frac{3}{4}$
  D) $\frac{4}{5}\frac{9}{10}\frac{17}{20}\frac{3}{4}$
  Show Answer
  The correct answer is C .
• Question 1149: The solution of the quadratic equation bx² + cx + a = 0 is given by Options:
  A) x = b $\pm$ $\frac{\sqrt{b^2-4ac}}{2a}$
  B) x = c $\pm$ $\frac{\sqrt{b^2-4ab}}{2b}$
  C) x = -c $\pm$ $\frac{\sqrt{c^2-4ab}}{2b}$
  D) x = -b $\pm$ $\frac{\sqrt{b^2-4ac}}{2b}$
  Show Answer
  The correct answer is C .
• Question 1150:

  

  In the figure, GHIJKLMN is a cube of side a. Find the length of HN.

  Options:
  A) $\sqrt{3a}$
  B) 3a
  C) 3a²
  D) a$\sqrt{2}$
  E) a$\sqrt{3}$
  Show Answer
  The correct answer is E .