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 1151:

  An article when sold for ₦230.00 makes a 15% profit. Find the profit or loss % if it was sold for ₦180.00

  Options:
  A) 10% gain
  B) 10% loss
  C) 12% loss
  D) 12% gain
  Show Answer
  The correct answer is B .
• Question 1152: In how many ways can 2 students be selected from a group of 5 students in a debating competition? Options:
  A) 25 ways
  B) 10 ways
  C) 15 ways
  D) 20 ways
  E) 16 ways
  Show Answer
  The correct answer is D .
• Question 1153:

  If 2${}^{x+y}$ = 16 and 4${}^{x-y}=\frac{1}{32}$, find the values of x and y.

  Options:
  A) x = $\frac{3}{4}$, y = $\frac{11}{4}$
  B) x = $\frac{3}{4}$, y = $\frac{13}{4}$
  C) x = $\frac{2}{3}$, y = $\frac{4}{5}$
  D) x = $\frac{2}{3}$, y = $\frac{13}{4}$
  Show Answer
  The correct answer is B .
• Question 1154:

  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 1155: If m and n are the mean and median respectively of the set of numbers 2, 3, 9, 7, 6, 7, 8, 5, find m + 2n to the nearest whole number Options:
  A) 19
  B) 18
  C) 13
  D) 12
  Show Answer
  The correct answer is A .
• Question 1156: What is the total surface area of a cylinder with radius 2cm and height 1.5cm, correct to 2 significant figures? Options:
  A) 440cm${}^2$
  B) 220cm${}^2$
  C) 88cm${}^2$
  D) 44cm${}^2$
  E) 22cm${}^2$
  Show Answer
  The correct answer is D .
• Question 1157:

  Find the standard deviation of 2,3,8,10 and 12

  Options:
  A) 3.9
  B) 4.9
  C) 5.9
  D) 6.9
  Show Answer
  The correct answer is A .
• Question 1158: The sum of four consecutive integers is 34. Find the least of these numbers Options:
  A) 7
  B) 6
  C) 8
  D) 5
  Show Answer
  The correct answer is A .
• Question 1159: The mean and the range of the set of numbers 1.20, 1.00, 0.90, 1.40, 0.80, 1.20, and 1.10 are m and r respectively. Find m + r Options:
  A) 1.11
  B) 1.69
  C) 1.85
  D) 2.45
  Show Answer
  The correct answer is B .
• Question 1160: 2 bags of sugar at N_x per bag are mixed with 3 bags of sugar at N_y per bag. What is the cost in N of the mixture per bag? Options:
  A) $\frac{(2x+3y)}{5}$
  B) $\frac{(x+y)}{2}$
  C) $\frac{x}{2}+\frac{y}{3}$
  D) $\frac{(x+y)}{5}$
  E) $\frac{(3x+2y)}{5}$
  Show Answer
  The correct answer is A .