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 1281: Three numbers, x, y and z are connected by the relationships y = $\frac{4x}{9}$ + 1. If x = 99, find z Options:
  A) 6$\frac{1}{3}$
  B) 20
  C) 21
  D) 176$\frac{4}{9}$
  E) None of the above
  Show Answer
  The correct answer is C .
• Question 1282: Evaluate (212)₃ - (121)₃ + (222)₃ Options:
  A) (313)₃
  B) (1000)₃
  C) (1020)₃
  D) (1222)₃
  Show Answer
  The correct answer is C .
• Question 1283: If x > 0, find the range of the numbers x - 3, 3x + 2, x - 1, 4x, 2x - 1, x - 2, 2x - 2, 3x and 3x + 1 Options:
  A) 3x + 3
  B) 3x + 1
  C) 2x + 5
  D) 2x + 1
  Show Answer
  The correct answer is B .
• Question 1284: The ninary operation * is defined on the set of integers p and q by p*q = pq + p + q. Find 2 * (3 * 4). Options:
  A) 59
  B) 19
  C) 67
  D) 38
  Show Answer
  The correct answer is A .
• Question 1285: A man bought wrist watch for ₦150 but was only able to sell it for ₦120. Find the loss per cent on the transaction Options:
  A) 25%
  B) 11%
  C) 20%
  D) 80%
  E) 30%
  Show Answer
  The correct answer is C .
• Question 1286:

  $\begin{array}{ccccc}x& 2& 4& 6& 8\\ f& 4& y& 6& 5\end{array}$

  If the mean of the above frequency distribution is 5.2, find y

  Options:
  A) 2, 1
  B) 1, 2
  C) 1, 5
  D) 5, 2
  Show Answer
  The correct answer is C .
• Question 1287: 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 1288:

  The pie chart shows the monthly expenditure of a public servant. The monthly expenditure on housing is twice that of school fees. How much does the worker spend on housing if his monthly income is ₦7200?

  Options:
  A) ₦1000
  B) ₦2000
  C) ₦3000
  D) ₦4000
  Show Answer
  The correct answer is B .
• Question 1289: In how many ways can five people sit round a circular table? Options:
  A) 24
  B) 60
  C) 12
  D) 120
  Show Answer
  The correct answer is A .
• Question 1290: A polynomial in x whose roots are $\frac{4}{3}$ and -$\frac{2}{5}$ is Options:
  A) 15x² - 11x - 12
  B) 15x² + 11x - 12
  C) 12x² - x - 12
  D) 12x² + 11x - 15
  Show Answer
  The correct answer is A .