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: If y = cos 3x, find $\frac{\delta y}{\delta x}$ Options:
  A) $\frac{1}{3}\sin 3x$
  B) $-\frac{1}{3}\sin 3x$
  C) 3 sin 3x
  D) -3 sin 3x
  Show Answer
  The correct answer is D .
• Question 1782: The value of x + x ( x^x) when x = 2 is Options:
  A) 16
  B) 10
  C) 18
  D) 24
  Show Answer
  The correct answer is B .
• Question 1783: The angle of elevation of the top (T) of a palm tree from a point (R) on the ground is 30°. The distance from R to the base (B) of the palm tree is 120m. What is the distance between T and R? Options:
  A) 60m
  B) 60$\sqrt{3}$m
  C) 80$\sqrt{3}$m
  D) 120$\sqrt{3}$m
  E) 240m
  Show Answer
  The correct answer is C .
• Question 1784: 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 1785: The larger value of y for which (y - 1)² = 4y - 7 is Options:
  A) 2
  B) 4
  C) 6
  D) 7
  E) 8
  Show Answer
  The correct answer is B .
• Question 1786:

  The ages of students in a small primary school were recorded in the table below.

  Age	5 - 6	7 - 8	9 -10
  Frequency	29	40	38

  
  Estimate the mean

  Options:
  A) 7.7
  B) 7.5
  C) 7.8
  D) 7.6
  Show Answer
  The correct answer is A .
• Question 1787: Multiply (x + 3y + 5) by (2x² + 5y + 2) Options:
  A) 2x² + 3yx² + 10xy + 15y² + 13y + 10x² + 2x + 10
  B) 2x³ + 6yx² + 5xy + 5y² + 31y + 5x² + 2x + 10
  C) 2x³ + 6xy² + 5xy + 15y² + 12y + 10x² + 2x = 10
  D) 2x² + 6xy² + 5xy + 15y² + 13y + 10x² + 2x + 10
  E) 2x³ + 2yx² + 10xy + 10y² + 31y + 5x² + 10
  Show Answer
  The correct answer is B .
• Question 1788: Find the mean deviation of 2, 4, 5, and 9 Options:
  A) 1
  B) 2
  C) 5
  D) 7
  Show Answer
  The correct answer is B .
• Question 1789: x₁₀ = 1214₅ find x. Options:
  A) 124
  B) 184
  C) 121
  D) 180
  Show Answer
  The correct answer is B .
• Question 1790:

  

  In the diagram above ∠OPQ is

  Options:
  A) 90${}^{\circ }$
  B) 53${}^{\circ }$
  C) 36${}^{\circ }$
  D) 26${}^{\circ }$
  Show Answer
  The correct answer is B .