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 1421: Factorize completely 8a + 125ax³ Options:
  A) (2a + 5x²)(4 + 26ax)
  B) a(2 + 5x)(4 - 10x + 25x²)
  C) (2a + 5x)(4 - 10ax + 25x²)
  D) a(2 + 5x)(4 + 10ax + 25x²)
  Show Answer
  The correct answer is B .
• Question 1422: Factory P produces 20,000 bags of cement per day while factory Q produces 15,000 bags per day. If P reduces production by 5% and Q increases production by 5%, determine the effective loss in the number of bags produced per day by the two factories Options:
  A) 250
  B) 750
  C) 1000
  D) 1250
  Show Answer
  The correct answer is A .
• Question 1423: Express $62+3$ as decimal correct to 3 significant figures. Options:
  A) 20.6
  B) 20.667
  C) 20.67
  D) 20.7
  Show Answer
  The correct answer is B .
• Question 1424: Ice forms on a refrigerator ice box at rate of (4 - 0.61)g per minute after 1 minute. If initially, there were 2g of ice, find the mass of ice formed in 5 minutes. Options:
  A) 19.5
  B) 17.0
  C) 14.5
  D) 12.5
  Show Answer
  The correct answer is D .
• Question 1425: Find the number of sides of a regular polygon whose interior angle is twice the exterior angle. Options:
  A) 6
  B) 2
  C) 3
  D) 8
  Show Answer
  The correct answer is A .
• Question 1426: Express 37.05 x 0.0042 in standard form Options:
  A) 15.561 x 10²
  B) 1.5561 x 10^-4
  C) 1.556 x 10^-1
  D) 1.5561 x 10¹
  E) 1.55 x 10¹
  Show Answer
  The correct answer is C .
• Question 1427:

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

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

  Options:
  A) 180
  B) 120
  C) 110
  D) 40
  Show Answer
  The correct answer is B .
• Question 1428:

  

  In the figure above, what is the equation of the line that passes the y-axis at (0,5) and passes the x-axis at (5,0)?

  Options:
  A) y = x + 5
  B) y = -x + 5
  C) y = x - 5
  D) y = -x - 5
  Show Answer
  The correct answer is B .
• Question 1429:
  

  Calculate the area of the composite figure above.

  Options:
  A) 6048 m${}^2$
  B) 3969 m${}^2$
  C) 4628 m${}^2$
  D) 5834 m${}^2$
  Show Answer
  The correct answer is B .
• Question 1430: PQR is the diagram of a semicircle RSP with centre at Q and radius of length 3.5cm. If QPT = 60^o. Find the perimeter of the figure PTRS. $\pi$ = $\frac{22}{7}$ Options:
  A) 25cm
  B) 18cm
  C) 36cm
  D) 29cm
  E) 25.5cm
  Show Answer
  The correct answer is A .