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 1741:

  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 1742: Find the mean deviation of 20, 25, 21, 27, 28, 29, to the nearest whole number Options:
  A) 2
  B) 3
  C) 4
  D) 5
  E) 6
  Show Answer
  The correct answer is B .
• Question 1743:

  The cumulative frequency function of the data below is given below by the equation y = cf(x). What is cf(5)?

  $\begin{array}{cc}Score(n)& Frequency(f)\\ 3& 30\\ 4& 32\\ 5& 30\\ 6& 35\\ 8& 20\end{array}$

  Options:
  A) 30
  B) 32
  C) 55
  D) 62
  E) 92
  Show Answer
  The correct answer is E .
• Question 1744: The probability of an event P is $\frac{3}{4}$ while that of another event Q is $\frac{1}{6}$. If the probability of both P and Q is $\frac{1}{2}$. What is the probability of either P or Q. Options:
  A) $\frac{1}{96}$
  B) $\frac{1}{8}$
  C) $\frac{5}{6}$
  D) $\frac{11}{12}$
  Show Answer
  The correct answer is C .
• Question 1745: The expression x³ - 4x² + cx + d is such that x + 1 is its factor, and its value is 1 when x is -2. Find c and d. Options:
  A) c = 4 and d = -9
  B) c = -4 and d = 9
  C) c = -20 and d = -15
  D) c = 20 and d = -15
  E) c = -20 and d = 15
  Show Answer
  The correct answer is C .
• Question 1746: From two points x and y, 8m apart, and in line with a pole, the angle of elevation of the top of the pole are 30^o and 60^o respectively. Fins the height of the pole assuming that x, y and the foot of the pole are the same horizontal plane and x and y are on the same side of the pole. Options:
  A) $\sqrt{6}$
  B) 4$\sqrt{3}$
  C) $\sqrt{3}$
  D) $\frac{12}{\sqrt{3}}$
  Show Answer
  The correct answer is B .
• Question 1747:

  Evaluate ${\int }_0^{1}4x-6\sqrt[3]{x^2}dx$

  Options:
  A) - $\frac{5}{8}$
  B) - $\frac{8}{5}$
  C) $\frac{8}{5}$
  D) $\frac{5}{8}$
  Show Answer
  The correct answer is B .
• Question 1748: If P = $\left(\begin{array}{cc}2& -3\\ 1& 1\end{array}\right)$ Options:
  A) $\left(\begin{array}{cc}-\frac{1}{5}& -\frac{3}{5}\\ -\frac{1}{5}& -\frac{2}{5}\end{array}\right)$
  B) $\left(\begin{array}{cc}\frac{1}{5}& \frac{3}{5}\\ \frac{1}{5}& \frac{2}{5}\end{array}\right)$
  C) $\left(\begin{array}{cc}-\frac{1}{5}& \frac{3}{5}\\ -\frac{1}{5}& \frac{2}{5}\end{array}\right)$
  D) $\left(\begin{array}{cc}\frac{1}{5}& \frac{3}{5}\\ -\frac{1}{5}& \frac{2}{5}\end{array}\right)$
  Show Answer
  The correct answer is D .
• Question 1749: Find ∫(sin x + 2)dx Options:
  A) cos x + x² + K
  B) cos x 2x + K
  C) -cos x + x² + K
  D) -cos x + 2x + K
  Show Answer
  The correct answer is D .
• Question 1750: An arithmetic progression has first term 11 and fourth term 32. The sum of the first nine terms is Options:
  A) 351
  B) 531
  C) 135
  D) 153
  Show Answer
  The correct answer is A .