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 1131:

  A circle has a radius of 13 cm with a chord 12 cm away from the centre of the circle. Calculate the length of the chord.

  Options:
  A) 16 cm
  B) 8 cm
  C) 5 cm
  D) 10 cm
  Show Answer
  The correct answer is D .
• Question 1132:
  

  In the diagram above, XY = 8cm and OX = 5cm. Find Oz

   

  Options:
  A) 9cm
  B) 3.4cm
  C) 9.1cm
  D) 3cm
  Show Answer
  The correct answer is D .
• Question 1133: The mean of seven numbers is 10. If six of the numbers are 2, 4, 8, 14, 16 and 18, find the mode. Options:
  A) 6
  B) 8
  C) 14
  D) 2
  Show Answer
  The correct answer is B .
• Question 1134: Two perfect dice are thrown together, Determine the probability of obtaining a total score of 8 Options:
  A) $\frac{1}{12}$
  B) $\frac{5}{36}$
  C) $\frac{1}{6}$
  D) $\frac{7}{36}$
  Show Answer
  The correct answer is B .
• Question 1135: If f(x - 4) = x² + 2x + 3, Find, f(2) Options:
  A) 6
  B) 11
  C) 27
  D) 51
  Show Answer
  The correct answer is D .
• Question 1136:

  Approximate 0.9875 to 1 decimal place.

  Options:
  A) 1.1
  B) 1.0
  C) 0.9
  D) 0.10
  Show Answer
  The correct answer is B .
• Question 1137: 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 1138: Express 0.03785 in standard form correct to 3 significant figures. Options:
  A) 3 × 10${}^{-2}$
  B) 3.78 × 10${}^{-2}$
  C) 3.79 × 10${}^{-2}$
  D) 3.79 × 10${}^{-1}$
  E) 3.78 × 10${}^{-2}$
  Show Answer
  The correct answer is C .
• Question 1139: y = is inversely proportional to x and y = 4 when x = 1/2. Find x when y = 10. Options:
  A) 2
  B) 10
  C) 1/5
  D) 1/10
  Show Answer
  The correct answer is C .
• Question 1140: $\left|\begin{array}{ccc}-2& 1& 1\\ 2& 1& k\\ 1& 3& -1\end{array}\right|$ = 23 Options:
  A) 1
  B) 2
  C) 3
  D) 4
  Show Answer
  The correct answer is B .