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 1121:

  Find x if the mean of 2x, 4x, 2x -13 and 6x is 4.

  Options:
  A) 1.5
  B) 2.0
  C) 1.0
  D) 0.5
  Show Answer
  The correct answer is B .
• Question 1122: Triangle OPQ above is the solution of the inequalities Options:
  A) x + 1 ≥ 0, y + x ≤ 0, y - x ≥ 0
  B) y + x ≤ 0, y - x ≥ 0, x -1 ≥ 0
  C) x - 1 ≤ 0, y - x ≥ o, y + x ≥ 0
  D) x - 1 ≤ 0, y + x ≤ 0, y - x ≤ 0
  Show Answer
  The correct answer is A .
• Question 1123: In a school, there are 35 students in Class 2A and 40 in class 2B. The mean score for class 2A in an English literature examination is 60.0 and that for 2B in the same paper is 52.5. Find to one place of decimals, the mean for the combined classes. Options:
  A) 1.5
  B) 56.0
  C) 56.2
  D) 56.3
  E) 56.5
  Show Answer
  The correct answer is B .
• Question 1124: Find the probability that a number picked at random from the set(43, 44, 45, ..., 60) is a prime number. Options:
  A) $\frac{2}{3}$
  B) $\frac{1}{3}$
  C) $\frac{2}{9}$
  D) $\frac{7}{9}$
  Show Answer
  The correct answer is C .
• Question 1125: Determine the value of ${\int }_0^{\frac{\pi }{2}}$ (-2 cosx)dx Options:
  A) -$\frac{3}{2}$
  B) -$\frac{1}{2}$
  C) -2
  D) -3
  Show Answer
  The correct answer is C .
• Question 1126: Let p be a probability function on set S, where S = (a₁, a₂, a₃, a₄). Find P(a₁) if P(a₂) = $\frac{1}{3}$, p(a₃) = $\frac{1}{6}$ and p(a₄) = $\frac{1}{5}$ Options:
  A) $\frac{7}{3}$
  B) $\frac{2}{3}$
  C) $\frac{1}{3}$
  D) $\frac{3}{10}$
  Show Answer
  The correct answer is D .
• Question 1127:

  Find the number of ways that the letters of the word EXCELLENCE be arranged

  Options:
  A) $\frac{10!}{2!2!2!}$
  B) $\frac{10!}{4!2!}$
  C) $\frac{10!}{4!2!2!}$
  D) $\frac{10!}{2!2!}$
  Show Answer
  The correct answer is C .
• Question 1128:

  Find the value of k in the equation: $\sqrt{28}+\sqrt{112}-\sqrt{k}=\sqrt{175}$

  Options:
  A) $\sqrt{28}$
  B) 7
  C) 28
  D) $\sqrt{7}$
  Show Answer
  The correct answer is B .
• Question 1129: Evaluate $\int$ sec²$\theta$ d $\theta$ Options:
  A) sec$\theta$ tan$\theta$ + k
  B) tan$\theta$ + k
  C) 2 sec$\theta$ + k
  D) sec$\theta$ + k
  Show Answer
  The correct answer is B .
• Question 1130:

  

  The triangle PQR above is

  Options:
  A) an obtuse-angled triangle
  B) a scalene triangle
  C) an isosceles triangle
  D) an equilateral triangle
  Show Answer
  The correct answer is C .