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 1511:

  Calculate the value of x and y if 27^x ÷ 81^x+2y = 9, x + 4y = 0

  Options:
  A) x = 1, y = 1/2
  B) x = 2, y = – 1/2
  C) x − 0, y = 1
  D) x = 2, y = –1
  Show Answer
  The correct answer is B .
• Question 1512: Find the positive number n such that thrice its square is equal to 12 times the number. Options:
  A) 1
  B) 2
  C) 3
  D) 4
  Show Answer
  The correct answer is D .
• Question 1513:

  If ${25}^{1-x}\times 5^{x+2}÷(\frac{1}{125}{)}^x={625}^{-1}$, find the value of x.

  Options:
  A) x = -4
  B) x = 2
  C) x = -2
  D) x = 4
  Show Answer
  The correct answer is A .
• Question 1514:

  Evaluate$({101}_{two}{)}^3$

  Options:
  A) ${111101}_{two}$
  B) ${11111101}_{two}$
  C) ${1111101}_{two}$
  D) ${11001}_{two}$
  Show Answer
  The correct answer is C .
• Question 1515: Write h in terms of a, b, c, d if a = $\frac{b(1-ch)}{a-dh}$ Options:
  A) h = $\frac{a-b}{ad}$
  B) h = $\frac{1-b}{ad-bc}$
  C) h = $\frac{(a-b{)}^2}{ad-bc}$
  D) h = $\frac{a-b}{ad-bc}$
  E) h = $\frac{b-a}{ab-dc}$
  Show Answer
  The correct answer is D .
• Question 1516:

  

  The triangle PQR above is

  Options:
  A) an obtuse-angled triangle
  B) a scalene triangle
  C) an isosceles triangle
  D) an equilateral triangle
  Show Answer
  The correct answer is C .
• Question 1517:

  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 1518: Twenty girls and y boys sat on an examination. The mean marks obtained by the girls and boys were 52 and 57 respectively. if the total score for both girls and boys was 2950, find y. Options:
  A) 51
  B) 48
  C) 30
  D) 25
  E) 18
  Show Answer
  The correct answer is C .
• Question 1519:

  

  The triangle POR is

  Options:
  A) an isosceles triange
  B) an obtuse angle
  C) a scalene triangle
  D) an equilateral triangle
  Show Answer
  The correct answer is A .
• Question 1520: A man invested ₦5,000 for 9 months at 4%. What is the simple interest? Options:
  A) ₦150
  B) ₦220
  C) ₦130
  D) ₦250
  Show Answer
  The correct answer is A .