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 871:

  Solve the logarithmic equation: $lo{g}_2(6-x)=3-lo{g}_{2}x$

  Options:
  A) $x$ = 4 or 2
  B) $x$ = -4 or -2
  C) $x$ = -4 or 2
  D) $x$ = 4 or -2
  Show Answer
  The correct answer is A .
• Question 872: The angles of a polygon are given by x, 2x, 3x, 4x and 5x respectively. Find the value of x. Options:
  A) 24^o
  B) 30^o
  C) 33^o
  D) 36^o
  Show Answer
  The correct answer is D .
• Question 873: A number of pencils were shared out among Bisi, Sola and Tunde in the ratio of 2 : 3 : 5 respectively. If Bisi got 5, how many were share out? Options:
  A) 15
  B) 25
  C) 30
  D) 50
  Show Answer
  The correct answer is B .
• Question 874:

  Simplify $\frac{0.026\times 0.36}{0.69}$. Leave your answer in standard form.

  Options:
  A) 1.36 x 10^-4
  B) 1.36 x 10^-3
  C) 1.36 x 10^-1
  D) 1.36 x 10^-2
  Show Answer
  The correct answer is D .
• Question 875: If x - 3 is directly proportional to the square of y and x = 5 when y =2, find x when y = 6. Options:
  A) 30
  B) 21
  C) 16
  D) 12
  Show Answer
  The correct answer is B .
• Question 876: Find the derivative of y = sin(2x³ + 3x - 4) Options:
  A) cos (2x³ + 3x - 4)
  B) -cos (2x³ + 3x - 4)
  C) (6x² + 3) cos (2x³ + 3x - 4)
  D) -(6x² + 3) cos (2x³ + 3x - 4)
  Show Answer
  The correct answer is C .
• Question 877:

  A man sells different brands of an items. ${}^1{/}_9$ of the items he has in his shop are from Brand A, ${}^5{/}_8$ of the remainder are from Brand B and the rest are from Brand C. If the total number of Brand C items in the man's shop is 81, how many more Brand B items than Brand C does the shop has?

  Options:
  A) 243
  B) 108
  C) 54
  D) 135
  Show Answer
  The correct answer is C .
• Question 878: In a restaurant, the cost of providing a particular type of food is partly constant and partially inversely proportional to the number of people. If cost per head for 100 people is 30k and the cost for 40 people is 60k, Find the cost for 50 people? Options:
  A) 15k
  B) 20k
  C) 50k
  D) 40k
  E) 45k
  Show Answer
  The correct answer is C .
• Question 879: Find the range of values of m which satisfy (m - 3)(m - 4) < 0. Options:
  A) 2 < m < 5
  B) -3 < m < 4
  C) 3 < m < 4
  D) -4 < m < 3
  Show Answer
  The correct answer is C .
• Question 880: Find the area of the curved surface of a cone whose base radius is 3cm and whose height is 4cm (π = 3.14) Options:
  A) 17.1cm²
  B) 27.2cm²
  C) 47.1cm²
  D) 37.3cm²
  Show Answer
  The correct answer is C .