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 591: If x is inversely proportional to y and x = 2$\frac{1}{2}$ when y = 2, find x if y = 4 Options:
  A) 4
  B) 5
  C) 1$\frac{1}{4}$
  D) 2$\frac{1}{4}$
  Show Answer
  The correct answer is C .
• Question 592: Find the equation of a line perpendicular to line 2y = 5x + 4 which passes through (4, 2). Options:
  A) 5y - 2x -18 = 0
  B) 5y + 2x - 18 = 0
  C) 5y - 2x + 18 = 0
  D) 5y + 2x - 2 = 0
  Show Answer
  The correct answer is B .
• Question 593:

  Evaluate (212)${}_3$ - (121)${}_3$ + (222)${}_3$

  Options:
  A) (313)${}_3$
  B) (1000)${}_3$
  C) (1020)${}_3$
  D) (1222)${}_3$
  Show Answer
  The correct answer is C .
• Question 594: A trader bought goats for N4000 each. He sold them for N180,000 at a loss of 25%. How many goats did he buy? Options:
  A) 60
  B) 50
  C) 45
  D) 36
  Show Answer
  The correct answer is A .
• Question 595:

  A school girl spends $\frac{1}{4}$ of her pocket money on books and $\frac{1}{3}$ on dress. What fraction remains?

  Options:
  A) $\frac{5}{6}$
  B) $\frac{7}{12}$
  C) $\frac{5}{12}$
  D) $\frac{1}{6}$
  Show Answer
  The correct answer is C .
• Question 596: If the mean of the numbers 0, (x+2), (3x+6), and (4x+8) is 4, find their mean deviation. Options:
  A) zero
  B) 2
  C) 3
  D) 4
  Show Answer
  The correct answer is C .
• Question 597: In a restaurant, the cost of providing a particular type of food is partly constant and partially inversely proportional to the number of people. If cost per head for 100 people is 30k and the cost for 40 people is 60k, Find the cost for 50 people? Options:
  A) 15k
  B) 20k
  C) 50k
  D) 40k
  E) 45k
  Show Answer
  The correct answer is C .
• Question 598: Find the standard deviation of 2, 3, 5 and 6 Options:
  A) √6
  B) √10
  C) √$\frac{2}{5}$
  D) √$\frac{5}{2}$
  Show Answer
  The correct answer is D .
• Question 599:
  

  Calculate, correct to three significant figures, the length of the arc AB in the diagram above.
  [Take $\pi {=}^{22}{/}_7$]

  Options:
  A) 32.4 cm
  B) 30.6 cm
  C) 28.8 cm
  D) 30.5 cm
  Show Answer
  The correct answer is B .
• Question 600: If log_x¹/264 = 3, find the value of x Options:
  A) 4
  B) 16
  C) 32
  D) 64
  Show Answer
  The correct answer is B .