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 531: For what values of x is the curve y = $\frac{x^2+3}{x+4}$ decreasing?
  Options:
  A) -3 < x $\le$ 0
  B) -3 $\ge$ x < 0
  C) 0 < x < 3
  D) 0 $\le$ x $\le$ 3
  Show Answer
  The correct answer is D .
• Question 532:

  No. of days	1	2	3	4	5	6
  No. of students	20	x	50	40	2x	60

  The distribution above shows the number of days a group of 260 students were absents from school in a particular term. How many students were absent for at least four days in the term

  Options:
  A) 210
  B) 40
  C) 120
  D) 160
  Show Answer
  The correct answer is D .
• Question 533:

  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 534: If $\frac{(2\sqrt{3}-\sqrt{2})}{(\sqrt{3}+2\sqrt{2})}=m+n\sqrt{6}$, find the values of m and n respectively. Options:
  A) 1, -2
  B) -2, 1
  C) $\frac{-2}{5}$, 1
  D) 2, 3/5
  Show Answer
  The correct answer is B .
• Question 535: x varies directly as y and inversely as z. when x = 5, y = 2 and z = 1. What is the value of x when y = 5 and z = 2? Options:
  A) 2.5
  B) 5
  C) 6.25
  D) 6.52
  E) 7.5
  Show Answer
  The correct answer is C .
• Question 536: A trader bought 100 oranges at 5 for N1.20, 20 oranges got spoilt and the remaining were sold at 4 for N1.50. Find the percentage gain or loss. Options:
  A) 30% gain
  B) 25% gain
  C) 30% loss
  D) 25% loss
  Show Answer
  The correct answer is B .
• Question 537: A polynomial in x whose zeros are -2, -1 and 3 is Options:
  A) x³ - 7x + 6
  B) x³ + 7x - 6
  C) x³ + 7x + 6
  D) x³ - 7x - 6
  Show Answer
  The correct answer is D .
• Question 538:

  The 10th term of an AP is 32. If the first term is 3/2, what is the 4th term?

  Options:
  A) 35/3
  B) 64
  C) 16
  D) 35/2
  Show Answer
  The correct answer is A .
• Question 539: Multiply (3$\sqrt{a}$ - 4a) by (4a + 3$\sqrt{a}$) Options:
  A) 9a + 16a²
  B) 9a – 16a²
  C) 3a + 16a²
  D) 3a - 16a²
  E) a - 16a²
  Show Answer
  The correct answer is B .
• Question 540:

  Two numbers are removed at random from the numbers 1, 2, 3 and 4. What is the probability that the sum of the numbers removed is even?

  Options:
  A) $\frac{2}{3}$
  B) $\frac{1}{2}$
  C) $\frac{1}{3}$
  D) $\frac{1}{4}$
  Show Answer
  The correct answer is B .