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 2171: 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 .
• Question 2172:

  

  The graph above shows the cumulative frequency curve of the distribution of marks in a class test. What percentage of the students scored more than 20 marks?

  Options:
  A) 68%
  B) 28%
  C) 17%
  D) 8%
  Show Answer
  The correct answer is B .
• Question 2173: Express the product of 0.21 and 0.34 in standard form Options:
  A) 7.14 x 10^-3
  B) 7.14 x 10^-2
  C) 7.14 x 10^-1
  D) 7.14 x 10^-4
  Show Answer
  The correct answer is B .
• Question 2174: An open rectangular box is made of wood 2cm thick. If the internal dimensions of the box are 50cm long, 36cm wide and 20cm deep, the box volume of wood in the box is Options:
  A) 11 520cm³
  B) 36 000cm³
  C) 38 200cm³
  D) 47 520cm³
  Show Answer
  The correct answer is A .
• Question 2175: Find the mean deviation of 20, 25, 21, 27, 28, 29, to the nearest whole number Options:
  A) 2
  B) 3
  C) 4
  D) 5
  E) 6
  Show Answer
  The correct answer is B .
• Question 2176:

  

  The shaded portion in the graph above is represented by

  Options:
  A) y + x - x³ ≥ 0, y - x ≤ 0
  B) y - x + x³ ≥ 0, y - x ≤ 0
  C) y + x - x³ ≤ 0, y + x ≥ 0
  D) y - x + x³ ≤ 0, y + x ≥ 0
  Show Answer
  The correct answer is A .
• Question 2177: x varies directly as y and inversely as z. when x = 5, y = 2 and z = 1. What is the value of x when y = 5 and z = 2? Options:
  A) 2.5
  B) 5
  C) 6.25
  D) 6.52
  E) 7.5
  Show Answer
  The correct answer is C .
• Question 2178:

  

  Which of the following equations represent the graph above?

  Options:
  A) y = 2+7x+4x²
  B) y = 2-7x+4x²
  C) y = 2+7x-4x²
  D) y = 2-7x-4x²
  Show Answer
  The correct answer is D .
• Question 2179: 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 2180: 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 .