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 1121: The cost of production of an article is made up as follows: Labour ₦70, Power ₦15, Materials ₦30, Miscellaneous ₦5. Find the angle of the sector representing Labour in a pie chart Options:
  A) 210^o
  B) 105^o
  C) 105^o
  D) 175^o
  E) 90^o
  Show Answer
  The correct answer is A .
• Question 1122:

  A chord of a circle radius $\sqrt{3cm}$ subtends an angle of 60${}^{\circ }$ on the circumference of he circle. Find the length of the chord

  Options:
  A) $\frac{\sqrt{3}}{2}$
  B) $\frac{3}{2}$
  C) 3
  D) $\sqrt{3}$cm
  Show Answer
  The correct answer is D .
• Question 1123: Find the size of each exterior angle of a regular octagon Options:
  A) 51${}^{\circ }$
  B) 45${}^{\circ }$
  C) 40${}^{\circ }$
  D) 36${}^{\circ }$
  Show Answer
  The correct answer is B .
• Question 1124: Find the probability of selecting a figure which is a parallelogram from a square, a rectangle, a rhombus, a kite and a trapezium Options:
  A) $\frac{3}{5}$
  B) $\frac{2}{5}$
  C) $\frac{4}{5}$
  D) $\frac{1}{5}$
  Show Answer
  The correct answer is A .
• Question 1125:

  $\begin{array}{ccccc}\oplus mod10& 2& 4& 6& 8\\ 2& 4& 8& 2& 6\\ 4& 8& 6& 4& 2\\ 4& 8& 6& 4& 2\\ 6& 2& 4& 6& 8\\ 8& 6& 2& 8& 4\end{array}$

  The multiplication table above has modulo 10 on the set S = (2, 4, 6, 8). Find the inverse of 2

  Options:
  A) 2
  B) 4
  C) 6
  D) 8
  Show Answer
  The correct answer is A .
• Question 1126: If the sum of the 8th and 9th terms of an arithmetic progression is 72 and the 4th term is -6, find the common difference Options:
  A) 4
  B) 8
  C) 6$\frac{2}{3}$
  D) 9$\frac{1}{3}$
  Show Answer
  The correct answer is D .
• Question 1127: A pentagon has four of its angles equal. If the size of the fifth angle is 60^o, Find the size of each of the four equal angles. Options:
  A) 60^o
  B) 108^o
  C) 120^o
  D) 150^o
  E) None of the above
  Show Answer
  The correct answer is C .
• Question 1128:

  The line $3y+6x$ = 48 passes through the points A(-2, k) and B(4, 8). Find the value of k.

  Options:
  A) 16
  B) 20
  C) 8
  D) -2
  Show Answer
  The correct answer is B .
• Question 1129:

  A student pilot was required to fly to an airport and then return as part of his flight training. The average speed to the airport was 120 km/h, and the average speed returning was 150 km/h. If the total flight time was 3 hours, calculate the distance between the two airports.

  Options:
  A) 270 km
  B) 200 km
  C) 360 km
  D) 450 km
  Show Answer
  The correct answer is B .
• Question 1130: If 2x + 3y = 1 and x - 2y = 11, find (x + y) Options:
  A) 5
  B) -3
  C) 8
  D) 2
  E) -2
  Show Answer
  The correct answer is D .