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 171: Solve for a positive number x such that 2(x³ - x² - 2x) = 1 Options:
  A) 4
  B) 3
  C) 2
  D) 1
  Show Answer
  The correct answer is C .
• Question 172: The larger value of y for which (y - 1)² = 4y - 7 is Options:
  A) 2
  B) 4
  C) 6
  D) 7
  E) 8
  Show Answer
  The correct answer is B .
• Question 173:

  Calculate the standard deviation of the following data: 7, 8, 9, 10, 11, 12, 13

  Options:
  A) 2
  B) 4
  C) 12
  D) 17
  Show Answer
  The correct answer is A .
• Question 174: If cos $\theta$ = $\frac{\sqrt{3}}{2}$ and $\theta$ is less than 90^o. Calculate cos$\frac{90-\theta }{si{n}^2\theta }$ Options:
  A) $\frac{4}{\sqrt{3}}$
  B) $\sqrt{\frac{3}{2}}$
  C) $\sqrt{\frac{76}{2}}$
  D) 4$\sqrt{\frac{76}{2}}$
  Show Answer
  The correct answer is A .
• Question 175: The radius of a circle is increasing at the rate of 0.02cms^-1. Find the rate at which the area is increasing when the radius of the circle is 7cm. Options:
  A) 0.75cm²S^-1
  B) 0.53cm²S^-1
  C) 0.35cm²S^-1
  D) 0.88cm²S^-1
  Show Answer
  The correct answer is D .
• Question 176: Find the nth term of the sequence 3, 6, 10, 15, 21..... Options:
  A) $\frac{n(n-1)}{2}$
  B) $\frac{n(n+1)}{2}$
  C) $\frac{(n+1)(n+2)}{2}$
  D) n(2n + 1)
  Show Answer
  The correct answer is C .
• Question 177: If cot$\theta$ = $\frac{8}{15}$, where $\theta$ is acute, find sin$\theta$ Options:
  A) $\frac{8}{17}$
  B) $\frac{15}{17}$
  C) $\frac{16}{17}$
  D) $\frac{13}{17}$
  Show Answer
  The correct answer is B .
• Question 178:

  $\begin{array}{cccccccc}\text{No. of children}& 0& 1& 2& 3& 4& 5& 6\\ \text{No. of families}& 7& 11& 6& 7& 7& 5& 3\end{array}$

  Find the mode and median respectively of the distribution above

  Options:
  A) 2, 1
  B) 1, 2
  C) 1, 5
  D) 5, 2
  Show Answer
  The correct answer is B .
• Question 179: Factorize a²x - b²y - b²x + a²y Options:
  A) (a - b)(x + y)
  B) (y - x)(a - b)(a + b)
  C) (x - y)(a - b)(a + b)
  D) (x + y)(a - b)(a + b)
  Show Answer
  The correct answer is D .
• Question 180:

  Below are the scores of a group of students in a test:

  $\begin{array}{ccccccc}Scores& 1& 2& 3& 4& 5& 6\\ \text{No. of students}& 1& 4& 5& 6& x& 2\end{array}$

  If the average scores is 3.5, find the value of x.

  Options:
  A) 1
  B) 2
  C) 3
  D) 4
  Show Answer
  The correct answer is B .