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 1301: 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 1302: Factorize completely (4x + 3y)² - (3x - 2y)² Options:
  A) (x + 5y)(7x + y)
  B) (x + 5y)(7x - y)
  C) (x - 5y)(7x + y)
  D) (x - 5y)(7x -y)
  Show Answer
  The correct answer is A .
• Question 1303: If Musa scored 75 in biology instead of 57, his average mark in four subjects would have been 60. What was his total mark? Options:
  A) 282
  B) 240
  C) 222
  D) 210
  Show Answer
  The correct answer is C .
• Question 1304:

  Each of the interior angles of a regular polygon is 140°. Calculate the sum of all the interior angles of the polygon.

  Options:
  A) 1080°
  B) 1260°
  C) 2160°
  D) 1800°
  Show Answer
  The correct answer is B .
• Question 1305: The prime factors of 2520 are Options:
  A) 2, 9, 5
  B) 2, 9, 7
  C) 2, 3, 5, 7
  D) 2, 3, 7, 9
  Show Answer
  The correct answer is C .
• Question 1306: The mean heights of 3 groups of students consisting of 20, 16 and 14 students are 1.67m, 1.50m and 1.40m Respectively. What is the mean height of all the students? Options:
  A) 1.52m
  B) 1.53m
  C) 1.54
  D) 1.55m
  E) 1.56m
  Show Answer
  The correct answer is C .
• Question 1307:

  If (x - a) is a factor of bx - ax + x², find the other factor.

  Options:
  A) (x + b)
  B) (x - b)
  C) (a + b)
  D) (a - b)
  Show Answer
  The correct answer is A .
• Question 1308: Evaluate $\frac{81.81+99.44}{20.09+36.16}$ correct to 3 significant figures. Options:
  A) 6.21
  B) 3.22
  C) 2.78
  D) 2.13
  Show Answer
  The correct answer is B .
• Question 1309: Factorize completely 9y² - 16X² Options:
  A) (3y - 2x)(3y + 4x)
  B) (3y + 4x)(3y + 4x)
  C) (3y + 2x)(3y - 4x)
  D) (3y - 4x)(3y + 4x)
  Show Answer
  The correct answer is D .
• Question 1310: The mean of ten positive numbers is 16. When another number is added, the mean becomes 18. Find the eleventh number Options:
  A) 3
  B) 16
  C) 18
  D) 38
  Show Answer
  The correct answer is D .