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 2511: If $\frac{a}{c}$ = $\frac{c}{d}$ = k, find the value of $\frac{3a^2-ac+c^2}{3b^2-bd+d^2}$ Options:
  A) 3k²
  B) 2k - k²
  C) $\frac{3b^2{k}^2-b{k}^{2}d+d{k}^2}{3b^2-bd+d^2}$
  D) k²
  Show Answer
  The correct answer is C .
• Question 2512: Express the quotient of 0.422 and 0.004 in standard form Options:
  A) 1.055 × 10²
  B) 10.55 × 10¹
  C) 105 × 10⁰
  D) 10.55 × 10^-1
  E) 1.055 × 10^-2
  Show Answer
  The correct answer is A .
• Question 2513: if a = -3, b = 2, c = 4, evaluate $\frac{a^3-b^3-c^{\frac{1}{2}}}{b-a-c}$ Options:
  A) 37
  B) $\frac{-37}{5}$
  C) $\frac{37}{5}$
  D) -37
  Show Answer
  The correct answer is A .
• Question 2514: $\frac{0.0001432}{1940000}$ = k x 10ⁿ where 1 $\le$ k < 10 and n is a whole number. The values K and n are Options:
  A) 7.381 qnd -11
  B) 2.34 and 10
  C) 3.871 and 2
  D) 7.831 and -11
  Show Answer
  The correct answer is A .
• Question 2515:

  Calculate the mean deviation of the first five prime numbers.

  Options:
  A) 2.72
  B) 5.6
  C) 5.25
  D) 13.6
  Show Answer
  The correct answer is A .
• Question 2516:

  

  In the diagram, GI is a tangent to the circle at H. If EF||GI, calculate the size of ∠EHF.

  Options:
  A) 126°
  B) 72°
  C) 54°
  D) 28°
  Show Answer
  The correct answer is B .
• Question 2517:

  

  Find the length of the chord |AB| in the diagram shown above.

  Options:
  A) 4.2 cm
  B) 4.3 cm
  C) 3.2 cm
  D) 3.4 cm
  Show Answer
  The correct answer is D .
• Question 2518:

  

  In the figure, TSP = PRQ, QR = 8cm, PR = 6cm and ST = 12cm. Find the length SP.

  Options:
  A) 4cm
  B) 16cm
  C) 9cm
  D) 14cm
  E) Impossible, insufficient data
  Show Answer
  The correct answer is B .
• Question 2519:

  The sum of the interior angle of pentagon is 6x + 6y. Find y in terms of x.

  Options:
  A) y = 6 - x
  B) y = 90 - x
  C) y = 120 - x
  D) y = 150 - x
  Show Answer
  The correct answer is B .
• Question 2520:

  Given that $\theta$ is an acute angle and sin $\theta$ = $\frac{m}{n}$, find cos $\theta$

  Options:
  A) $\frac{\sqrt{n^2-m^2}}{m}$
  B) $\frac{\sqrt{(n+m)(n-m)}}{n}$
  C) $\frac{m}{\sqrt{n^2-m^2}}$
  D) $\sqrt{\frac{n}{n^2-m^2}}$
  Show Answer
  The correct answer is B .