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 131:

  Simplify without using tables $\frac{2\sqrt{14}\times 3\sqrt{21}}{7\sqrt{24}\times 2\sqrt{98}}$

  Options:
  A) $\frac{3\sqrt{14}}{4}$
  B) $\frac{3\sqrt{2}}{4}$
  C) $\frac{3\sqrt{14}}{28}$
  D) $\frac{3\sqrt{2}}{28}$
  Show Answer
  The correct answer is D .
• Question 132: If k + 1; 2k - 1, 3k + 1 are three consecutive terms of a geometric progression, find the possible values of the common ratio Options:
  A) 0, 8
  B) -1, $\frac{5}{3}$
  C) 2, 3
  D) 1, -1
  Show Answer
  The correct answer is B .
• Question 133: If y = 2x³ + 6x² + 6x + 1, Find $\frac{dy}{dx}$ Options:
  A) 6x² + 12x + 1
  B) 6x² + 6x + 1
  C) 6x² + 6x + 6
  D) 6x² + 12x + 6
  Show Answer
  The correct answer is D .
• Question 134: If two smaller sides of a right angled triangle are 4cm and 5cm, find its area Options:
  A) 10 cm²
  B) 6 cm²
  C) 24 cm²
  D) 8 cm²
  Show Answer
  The correct answer is A .
• Question 135:

  A sector of a circle of radius 7.2cm which subtends an angle of 300° at the centre is used to form a cone. What is the radius of the base of the cone?

  Options:
  A) 8cm
  B) 6cm
  C) 9cm
  D) 7cm
  Show Answer
  The correct answer is B .
• Question 136: Find the probability of selecting a figure which is a parallelogram from a square, a rectangle, a rhombus, a kite and a trapezium Options:
  A) $\frac{3}{5}$
  B) $\frac{2}{5}$
  C) $\frac{4}{5}$
  D) $\frac{1}{5}$
  Show Answer
  The correct answer is A .
• Question 137: Find, correct to three significant figures, the value of $\sqrt{41830}$. Options:
  A) 205
  B) 647
  C) 2050
  D) 6470
  E) 64.7
  Show Answer
  The correct answer is A .
• Question 138: Evaluate $\frac{0.36\times 5.4\times 0.63}{4.2\times 9.0\times 2.4}$ Options:
  A) 0.013
  B) 0.014
  C) 0.14
  D) 0.13
  Show Answer
  The correct answer is A .
• Question 139: Find the values of x which satisfy the equation 16^x - 5 x 4^x + 4 = 0 Options:
  A) 1 and 4
  B) -2 and 2
  C) 0 and 1
  D) -1 and 0
  Show Answer
  The correct answer is C .
• Question 140: The perpendicular bisector of a line XY is the locus of a point B. whose distance from Y is always twice its distance from X. C Options:
  A) whose distance from X is always twice its distance from Y
  B) whose distance from Y is always twice its distance from X.
  C) which moves on the line XY
  D) which is equidistant from the points X and y
  Show Answer
  The correct answer is D .