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 1761: Each of the interior angles of a regular polygon is 140^o. How many sides has the polygon? Options:
  A) 9
  B) 8
  C) 7
  D) 5
  Show Answer
  The correct answer is A .
• Question 1762: The angle of elevation of the top T of a pole from a point X on the horizontal ground is 32°, if X is 68 m away from the foot F of the pole, calculate the height FT of the pole, correct to one decimal place. Options:
  A) 128.3m
  B) 108.8m
  C) 80.2m
  D) 57.7m
  E) 42.5m
  Show Answer
  The correct answer is E .
• Question 1763: Evaluate the integral ${\int }_{\frac{\pi }{12}}^{\frac{\pi }{4}}$ 2 cos 2x dx Options:
  A) -$\frac{1}{2}$
  B) -1
  C) $\frac{1}{2}$
  D) 1
  Show Answer
  The correct answer is C .
• Question 1764: Twenty girls and y boys sat on an examination. The mean marks obtained by the girls and boys were 52 and 57 respectively. if the total score for both girls and boys was 2950, find y. Options:
  A) 51
  B) 48
  C) 30
  D) 25
  E) 18
  Show Answer
  The correct answer is C .
• Question 1765: A solid cylinder of radius 3cm has a total surface area of 36$\pi$cm². Find its height Options:
  A) 2cm
  B) 3cm
  C) 4cm
  D) 5cm
  E) 6cm
  Show Answer
  The correct answer is B .
• Question 1766: If f(x - 2) = 3x² + 4x + 1. Find the area of the sector Options:
  A) 8
  B) 40
  C) 7
  D) 24
  E) 32
  Show Answer
  The correct answer is B .
• Question 1767: If 7 is subtracted from twice a certain number x, the result is at most 5. What is the range of the number?
  Options:
  A) x < 2
  B) x < 3
  C) x < 4
  D) x < 5
  E) x < 6
  Show Answer
  The correct answer is E .
• Question 1768:

  If (x - a) is a factor of bx - ax + x², find the other factor.

  Options:
  A) (x + b)
  B) (x - b)
  C) (a + b)
  D) (a - b)
  Show Answer
  The correct answer is A .
• Question 1769:

  Find the matrix A

  A $\left[\begin{array}{cc}0& 1\\ 2& -1\end{array}\right]$ =$\left[\begin{array}{cc}2& -1\\ 1& 0\end{array}\right]$

  Options:
  A) $\left[\begin{array}{cc}2& 1\\ {-}^1{/}_2& {-}^1{/}_2\end{array}\right]$
  B) $\left[\begin{array}{cc}0& 1\\ {}^1{/}_2& {}^1{/}_2\end{array}\right]$
  C) $\left[\begin{array}{cc}2& 1\\ 0& -1\end{array}\right]$
  D) $\left[\begin{array}{cc}2& 1\\ {}^1{/}_2& -2\end{array}\right]$
  Show Answer
  The correct answer is B .
• Question 1770: Find the value of $m$ if ${13}_m+{24}_m={41}_m$. Options:
  A) 8
  B) 6
  C) 5
  D) 2
  E) 6
  Show Answer
  The correct answer is B .