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 2111:

  

  The bar chart above shows the distribution of marks in a class test. If the pass mark is 5, what percentage of students failed the test?

  Options:
  A) 10%
  B) 20%
  C) 50%
  D) 60%
  Show Answer
  The correct answer is C .
• Question 2112:

  The mean of ten positive numbers is 16. When another number is added, the mean becomes 18. Find the eleventh number

  Options:
  A) 3
  B) 16
  C) 38
  D) 30
  Show Answer
  The correct answer is C .
• Question 2113: 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 2114: The mean of 2-t, 4+t, 3-2t, 2+t and t-1 is Options:
  A) 2
  B) t
  C) -t
  D) -2
  Show Answer
  The correct answer is A .
• Question 2115:

  If the binary operation $\ast$ is defined by m $\ast$ n = mn + m + n for any real number m and n, find the identity of the elements under this operation

  Options:
  A) e = 1
  B) e = -1
  C) e = -2
  D) e = 0
  Show Answer
  The correct answer is D .
• Question 2116: If x + 2 and x - 1 are factors of the expression 1x³ + 2kx² + 24, find the values of 1 and K Options:
  A) 1 = -6, k = -9
  B) 1 = -2, k = 1
  C) k = -1, 1 = -2
  D) 1 = 0, k = 1
  E) k = 0,1 = 6
  Show Answer
  The correct answer is A .
• Question 2117:

  The acres for rice, pineapple, cassava, cocoa and palm oil in a certain district are given respectively as 2, 5, 3, 11 and 9. What is the angle of the sector of cassava in a pie chart?

  Options:
  A) 180${}^o$
  B) 36${}^o$
  C) 60${}^o$
  D) 108${}^o$
  Show Answer
  The correct answer is B .
• Question 2118:

  Given that sin (5$x$ − 28)${}^o$ = cos(3$x$ − 50)${}^o$, O$x$ < 90${}^o$

  Find the value of $x$

  Options:
  A) 14${}^o$
  B) 21${}^o$
  C) 32${}^o$
  D) 39${}^o$
  Show Answer
  The correct answer is B .
• Question 2119: A group of 14 children received the following scores in a reading test. 35, 35, 26, 26, 26, 29, 29, 29, 12, 25, 25, 25, 25, 17. What was the median score? Options:
  A) 29
  B) 26
  C) 24.4
  D) 25
  E) 23
  Show Answer
  The correct answer is B .
• Question 2120: If $\frac{a}{c}$ = $\frac{c}{d}$ = k, find the value of $\frac{3a^2-ac+c^2}{3b^2-bd+d^2}$ Options:
  A) 3k²
  B) 2k - k²
  C) $\frac{3b^2{k}^2-b{k}^{2}d+d{k}^2}{3b^2-bd+d^2}$
  D) k²
  Show Answer
  The correct answer is C .