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 1181: A predator moves in a circle of radius √2 centre (0,0), while a prey moves along the line y = x. If 0 $\le$ x $\le$ 2, at which point(s) will they meet? Options:
  A) (1,1) only
  B) (1,1) and (1,2)
  C) (0,0) and (1,1)
  D) (√2,√2) only
  Show Answer
  The correct answer is A .
• Question 1182: A triangle has angles 30${}^{\circ }$, 15${}^{\circ }$ and 135${}^{\circ }$. The side opposite to the angle 30${}^{\circ }$ is length 6cm. The side opposite to the angle 135${}^{\circ }$ is equal to Options:
  A) 12cm
  B) 6cm
  C) 6$\sqrt{2}$cm
  D) 12$\sqrt{2}$cm
  Show Answer
  The correct answer is C .
• Question 1183: If y = (1 + x)², find $\frac{dy}{dx}$ Options:
  A) x - 1
  B) 2 + 2x
  C) 1 + 2x
  D) 2x - 1
  Show Answer
  The correct answer is B .
• Question 1184: Find the mean of 10, 8, 5, 11, 12, 9, 6, 3, 15, and 23. Options:
  A) 11.2
  B) 10
  C) 10.2
  D) 11.3
  Show Answer
  The correct answer is C .
• Question 1185: The positive root of t in the following equation, 4t² + 7t - 1$\pi$ = 0, correct to 4 places of decimal, is Options:
  A) 1.0622
  B) 10.6225
  C) 0.1328
  D) 0.3218
  E) 2.0132
  Show Answer
  The correct answer is C .
• Question 1186: Rationalize $\frac{2-\sqrt{5}}{3-\sqrt{5}}$ Options:
  A) $\frac{1-\sqrt{5}}{2}$
  B) $\frac{1-\sqrt{5}}{4}$
  C) $\frac{\sqrt{5}-1}{2}$
  D) $\frac{1+\sqrt{5}}{4}$
  Show Answer
  The correct answer is B .
• Question 1187: If sinx^o = what is sin (90 - x)^o? Options:
  A) $\frac{\sqrt{b^2-a^2}}{b}$
  B) 1$\frac{-a}{b}$
  C) $\frac{b^2-a^2}{b}$
  D) $\frac{a^2-b^2}{b}$
  E) $\sqrt{b^2-a^3}$
  Show Answer
  The correct answer is A .
• Question 1188: A woman buys 270 oranges for ₦1800.00 and seels at 5 for ₦40.00. What is her profit? Options:
  A) ₦2,160.00
  B) ₦1, 620.00
  C) ₦630.00
  D) ₦360.00
  Show Answer
  The correct answer is D .
• Question 1189: T varies inversely as the cube of R. When R = 3, T = $\frac{2}{81}$, find T when R = 2 Options:
  A) $\frac{1}{18}$
  B) $\frac{1}{12}$
  C) $\frac{1}{24}$
  D) $\frac{1}{6}$
  Show Answer
  The correct answer is B .
• Question 1190: Given that x² + y² + z² = 194, calculate z if x = 7 and $\sqrt{y}$ = 3 Options:
  A) $\sqrt{10}$
  B) 8
  C) 12.2
  D) 13.4
  Show Answer
  The correct answer is B .