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 2701: A sector of a circle of radius 7.2cm which subtends an angle of 300${}^{\circ }$ at the centre is used to form a cone. What is the radius of the base of the cone? Options:
  A) 6cm
  B) 7cm
  C) 8cm
  D) 9cm
  E) 5cm
  Show Answer
  The correct answer is A .
• Question 2702:

  In a committee of 5, which must be selected from 4 males and 3 females. In how many ways can the members be chosen if it were to include 2 females?

  Options:
  A) 144 ways
  B) 15 ways
  C) 185 ways
  D) 12 ways
  Show Answer
  The correct answer is D .
• Question 2703: Find the standard deviation of 2, 3, 5 and 6 Options:
  A) √6
  B) √10
  C) √$\frac{2}{5}$
  D) √$\frac{5}{2}$
  Show Answer
  The correct answer is D .
• Question 2704: If f(x) = 2x² - 5x + 3, find f(x + 1) Options:
  A) 2x² - x
  B) 2x² - x + 10
  C) 4x² + 3x + 2
  D) 4x² + 3x + 12
  Show Answer
  The correct answer is A .
• Question 2705:

  A group of market women sell at least one of yam, plantain and maize. 12 of them sell maize, 10 sell yam and 14 sell plantain. 5 sell plantain and maize, 4 sell yam and maize, 2 sell yam and plantain only while 3 sell all the three items. How many women are in the group?

  Options:
  A) 25
  B) 19
  C) 18
  D) 17
  Show Answer
  The correct answer is A .
• Question 2706: Calculate the area of a parallelogram whose diagonals are of length 8cm and 12cm and intersect at an angle of 135° Options:
  A) 271.5cm²
  B) 135.8cm²
  C) 96.0cm²
  D) 48.0cm²
  E) 33.9cm²
  Show Answer
  The correct answer is E .
• Question 2707: Find the area of the sector of a circle with radius 3m, if the angle of the sector is 60^o Options:
  A) 4.0m²
  B) 1m²
  C) 4.7m²
  D) 5.0m²
  Show Answer
  The correct answer is C .
• Question 2708: Two ladders of length 5m and 7m lean against a pole and make angles 45° and 60° with the ground respectively. What is their distance apart on the pole correct to two decimal places? Options:
  A) 9.60m
  B) 6.06m
  C) 2.54m
  D) 2.53m
  E) 2.00m
  Show Answer
  The correct answer is D .
• Question 2709:

  Find the determinant of the matrix A =$\left(\begin{array}{cc}2& 3\\ 1& 3\end{array}\right)$

  Options:
  A) 4
  B) 2
  C) 5
  D) 3
  Show Answer
  The correct answer is D .
• Question 2710: If y = (2x + 1)³ find dy/dx Options:
  A) 3(2x+1)²
  B) 6(2x+1)
  C) 3(2x+1)
  D) 6(2x+1)²
  Show Answer
  The correct answer is D .