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 1781: Calculate the perimeter, in cm, of a sector of a circle of radius 8cm and angle 45^o Options:
  A) 2$\pi$
  B) 8 + 2$\pi$
  C) 16 + 2$\pi$
  D) 16 + 16$\pi$
  Show Answer
  The correct answer is C .
• Question 1782: Make y the subject of the formula Z = x² + $\frac{1}{y^3}$ Options:
  A) y = $\frac{1}{(z-x^2{)}^3}$
  B) y = $\frac{1}{(z+x^2)\frac{1}{3}}$
  C) y = $\frac{1}{(z{x}^2)\frac{1}{3}}$
  D) y = $3\sqrt{z-x^2}$
  Show Answer
  The correct answer is D .
• Question 1783: If log₃x² = -8, what is x? Options:
  A) $\frac{1}{3}$
  B) $\frac{1}{9}$
  C) $\frac{1}{27}$
  D) $\frac{1}{81}$
  Show Answer
  The correct answer is D .
• Question 1784: Simplify $\sqrt{\frac{(0.0023\ast 750)}{(0.00345\ast 1.25)}}$ Options:
  A) 15
  B) 20
  C) 40
  D) 75
  Show Answer
  The correct answer is B .
• Question 1785: If t varies inversely as the cube of s, and t = 24, when s = 3, find t when s = 2 Options:
  A) 8
  B) 24
  C) 27
  D) 81
  E) 648
  Show Answer
  The correct answer is D .
• Question 1786: The probability that a student passes a physics test is $\frac{2}{3}$. If he takes three physics tests, what is the probability that he passes two of the tests? Options:
  A) $\frac{2}{27}$
  B) $\frac{3}{27}$
  C) $\frac{4}{27}$
  D) $\frac{5}{3}$
  Show Answer
  The correct answer is C .
• Question 1787:

  Given

  P = {1, 3, 5, 7, 9, 11}

  And Q = {2, 4, 6, 8, 1, 12}. Determine the relationship between P and Q

  Options:
  A) P∩Q = ∅
  B) P ⊂ Q
  C) Q⊂P
  D) P = Q
  Show Answer
  The correct answer is A .
• Question 1788:

  Given that r =$\sqrt{\frac{3v}{\pi h}}$, make v the subject of the formula

  Options:
  A) v = 3 $\pi r^2$ h
  B) v = $\frac{\pi rh}{3}$
  C) v =  $\frac{\pi r^{2}h}{3}$
  D) v = 3πrh
  Show Answer
  The correct answer is C .
• Question 1789: If p = $\left(\begin{array}{cc}x+3& x+2\\ x+1& x-1\end{array}\right)$ evaluate x if |p| = -10 Options:
  A) -5
  B) -2
  C) 2
  D) 5
  Show Answer
  The correct answer is D .
• Question 1790: If line p = 5x + 3 is parallel to line p = wx + 5. Find the value of w. Options:
  A) 7
  B) 3
  C) 6
  D) 5
  Show Answer
  The correct answer is D .