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 741:

  Score (x)	0	1	2	3	4	5	6
  Freq (f)	5	7	3	7	11	6	7

  Find the variance

  Options:
  A) 3.42
  B) 4.69
  C) 4.85
  D) 3.72
  Show Answer
  The correct answer is D .
• Question 742: 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 743: Find the equation of the set of points which are equidistant from the parallel lines x = 1 and x = 7 Options:
  A) y = 3
  B) x = 3
  C) x = 4
  D) y = 4
  Show Answer
  The correct answer is C .
• Question 744: Find the mean deviation of 20, 25, 21, 27, 28, 29, to the nearest whole number Options:
  A) 2
  B) 3
  C) 4
  D) 5
  E) 6
  Show Answer
  The correct answer is B .
• Question 745: A man is standing in the corridor of a 10-storey building and looking down at a tall tree in front of the building. He sees the top of the tree at angle of depression of 30^o. If the tree is 200m tall and the man's eyes are 300m above the ground, calculate the angle of depression of the foot tree as seen by the man Options:
  A) 30^o
  B) 60^o
  C) 45^o
  D) 25^o
  Show Answer
  The correct answer is B .
• Question 746:

  

  Evaluate ($\sin$45^o + $\sin$3^o ) in surd form.

  Options:
  A) $\frac{\sqrt{3}}{2\sqrt{2}}$
  B) √3 − $\frac{1}{2}$
  C) $\frac{1}{2}$√2
  D) 1 + $\frac{\sqrt{2}}{2}$
  Show Answer
  The correct answer is D .
• Question 747: Solve the simultaneous equations for x in x² + y - 8 = 0, y + 5x - 2 = 0 Options:
  A) -28, 7
  B) 6, -28
  C) 6, -1
  D) -1, 7
  E) 3, 2
  Show Answer
  The correct answer is C .
• Question 748: Simplify $\frac{1}{p}$ - $\frac{1}{q}$ + $\frac{p}{q}$ - $\frac{q}{p}$ Options:
  A) $\frac{1}{p-q}$
  B) $\frac{-1}{p+q}$
  C) $\frac{1}{pq}$
  D) $\frac{1}{pq(p-q)}$
  Show Answer
  The correct answer is B .
• Question 749: If cos x = 4/5, 0° $\le$ x $\le$ 90°, find the value of (1 + tan x)/(1 - tan x) Options:
  A) 9
  B) 7
  C) 4
  D) $\frac{7}{16}$
  E) $\frac{9}{25}$
  Show Answer
  The correct answer is B .
• Question 750: The sixth term of an A.P is half of its twelfth term. The first term of the A.P is equal to Options:
  A) zero
  B) half of the common difference
  C) double the common difference
  D) the common difference
  Show Answer
  The correct answer is D .