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 2861: If x + $\frac{1}{x}$ = 4, find x² + $\frac{1}{x^2}$ Options:
  A) 16
  B) 14
  C) 12
  D) 9
  Show Answer
  The correct answer is B .
• Question 2862:

  Reach each number to two significant figures and then evaluate $\frac{0.02174\times 1.2047}{0.023789}$

  Options:
  A) 0
  B) 0.9
  C) 1.1
  D) 1.2
  Show Answer
  The correct answer is C .
• Question 2863: Find y, if $\sqrt{12}-\sqrt{147}$ + y$\sqrt{3}$ = 0 Options:
  A) 3
  B) 7
  C) 1
  D) 5
  Show Answer
  The correct answer is D .
• Question 2864:

  

  The solution set of the shaded area above is

  Options:
  A) Y ≥ 0, y ≥ x and y + x ≤ 4
  B) Y ≤ x, y + x ≤ 4
  C) Y + x ≥ 4, y ≤ x
  D) Y ≤ x, y + x ≤ 4 and y ≥ 0
  Show Answer
  The correct answer is B .
• Question 2865:

  If 2${}^{x+y}$ = 16 and 4${}^{x-y}=\frac{1}{32}$, find the values of x and y.

  Options:
  A) x = $\frac{3}{4}$, y = $\frac{11}{4}$
  B) x = $\frac{3}{4}$, y = $\frac{13}{4}$
  C) x = $\frac{2}{3}$, y = $\frac{4}{5}$
  D) x = $\frac{2}{3}$, y = $\frac{13}{4}$
  Show Answer
  The correct answer is B .
• Question 2866: If s = $\sqrt{(\frac{a^2}{x^2}-\frac{b^2}{x^2})}$what does y equal? Options:
  A) $\sqrt{[(b^2-a^2)]÷(s^2-x^2)}$
  B) $\sqrt{[(b^2-a^2)÷(s^2\times 2)]}$
  C) $\sqrt{[x^2-a^2-b^2]÷s}$
  D) $[x^2-a^2-b^2]÷s$
  E) $\sqrt{[(b^2\times 2)÷(s^2\times 2-a^2)]}$
  Show Answer
  The correct answer is E .
• Question 2867: 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 2868: A regular polygon of n sides has 160^o as the size of each interior angle. Find n Options:
  A) 18
  B) 16
  C) 14
  D) 12
  Show Answer
  The correct answer is A .
• Question 2869: If y = 243(4x + 5)^-2, find $\frac{dy}{dx}$ when x = 1 Options:
  A) $\frac{-8}{3}$
  B) $\frac{3}{8}$
  C) $\frac{9}{8}$
  D) -$\frac{8}{9}$
  Show Answer
  The correct answer is A .
• Question 2870: A cylindrical tank has a capacity of 6160m³. What is the depth of the tank if the radius of its base is 28cm? Options:
  A) 8.0m
  B) 7.5m
  C) 5.0m
  D) 2.5m
  Show Answer
  The correct answer is D .