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 1551:

  Let a binary operation '*' be defined on a set A. The operation will be commutative if

  Options:
  A) a*b = b*a
  B) (a*b)*c = a*(b*c)
  C) (b ο c)*a = (b*a) ο (c*a)
  D) None of the above
  Show Answer
  The correct answer is A .
• Question 1552: Differentiate $\frac{6x^3-5x^2+1}{3x^2}$ with respect to x Options:
  A) $\frac{2+2}{3x^3}$
  B) 2 + $\frac{1}{6x}$
  C) 2 - $\frac{2}{3x^3}$
  D) $\frac{1}{5}$
  Show Answer
  The correct answer is C .
• Question 1553: If the function f(fx) = x³ + 2x² + qx - 6 is divisible by x + 1, find q Options:
  A) -5
  B) -2
  C) 2
  D) 5
  Show Answer
  The correct answer is A .
• Question 1554: PRSQ is a trapezium of area 14cm² in which PQ||RS. If PQ = 4cm and SR = 3cm, Find the area of SQR in cm² Options:
  A) 7.0
  B) 6.0
  C) 5.2
  D) 5.0
  Show Answer
  The correct answer is B .
• Question 1555: Find the x and y intercepts of the graph of 3x - z $\le$ 9 Options:
  A) (3, -9)
  B) (-3, 9)
  C) (-3, -9)
  D) (-3, 0)
  Show Answer
  The correct answer is A .
• Question 1556: If f (x) = 3x - 2, P = $\left(\begin{array}{cc}2& 1\\ -1& 0\end{array}\right)$ and I is 2 X 2 identity matrix, evaluate f(P) Options:
  A) $\left(\begin{array}{cc}6& 3\\ -3& 0\end{array}\right)$
  B) $\left(\begin{array}{cc}2& 0\\ 0& 2\end{array}\right)$
  C) $\left(\begin{array}{cc}8& 3\\ -3& 2\end{array}\right)$
  D) $\left(\begin{array}{cc}4& 3\\ -3& -2\end{array}\right)$
  Show Answer
  The correct answer is D .
• Question 1557: If n is the median and m is the mode of the following set of numbers, 2.4, 2.1, 1.6, 2.6, 2.6, 3.7, 2.1, 2.6, then (n, m) is Options:
  A) (2.6, 2.6)
  B) (2.5, 2.6)
  C) (2.6, 2.5)
  D) (2.5, 2.1)
  Show Answer
  The correct answer is B .
• Question 1558: What is the least possible value of $\frac{9}{1+2x^2}$ if 0 $\ge$ x $\ge$ 2? Options:
  A) 9
  B) 5
  C) 1
  D) 2
  Show Answer
  The correct answer is C .
• Question 1559: Make $\frac{a}{x}$ the subject of formula $\frac{x+1}{x-a}$ Options:
  A) $\frac{m-1}{m+1}$
  B) $\frac{m+1}{1-m}$
  C) $\frac{m-1}{1+m}$
  D) $\frac{m+1}{m-1}$
  Show Answer
  The correct answer is A .
• Question 1560:

  The area of a square is 144 sq cm. Find the length of its diagonal

  Options:
  A) 11$\sqrt{3}$cm
  B) 12cm
  C) 12$\sqrt{2}$cm
  D) 13cm
  Show Answer
  The correct answer is C .