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 1381: Express the product of 0.00043 and 2000 in standard form. Options:
  A) 8.6 x 10^-3
  B) 8.3 x 10^-2
  C) 8.6 x 10^-1
  D) 8.6 x 10
  Show Answer
  The correct answer is C .
• Question 1382:

  The time taken to do a piece of work is inversely proportional to the number of men employed. if it takes 45 men to do a piece of work in 5 days, how long will it take 25 men?

  Options:
  A) 15 days
  B) 12 days
  C) 5 days
  D) 9 days
  Show Answer
  The correct answer is D .
• Question 1383:

  Find the missing value in the following table:

  $\begin{array}{ccccccc}x& -2& -1& 0& 1& 2& 3\\ y=x^3-x+3& & 3& 3& 3& 9& 27\end{array}$

  Options:
  A) -3
  B) 3
  C) -9
  D) 13
  E) 9
  Show Answer
  The correct answer is A .
• Question 1384:
  

  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 1385: In a school of 150 students, 80 offer French while 60 offer Arabic and 20 offer neither. How many students offer both subjects? Options:
  A) 45
  B) 10
  C) 35
  D) 30
  Show Answer
  The correct answer is B .
• Question 1386:

  Tade bought 200 mangoes at 4 for ₦2.50. 30 out of the mangoes got spoilt and the remaining were sold at 2 for ₦2.40. Find the percentage profit or loss.

  Options:
  A) 43.6% loss
  B) 35% profit
  C) 63.2% profit
  D) 28% loss
  Show Answer
  The correct answer is C .
• Question 1387: Find y, if $\sqrt{12}-\sqrt{147}+y\sqrt{3}=0$ Options:
  A) 5
  B) 1
  C) 7
  D) 3
  Show Answer
  The correct answer is A .
• Question 1388: An $(n-2{)}^2$ sided figure has n diagonals, find the number n of diagonals for a 25 sided figure Options:
  A) 8
  B) 7
  C) 6
  D) 9
  E) 10
  Show Answer
  The correct answer is B .
• Question 1389:

  

  In the diagram above, |QR| is the diameter of the semicircle QR. Find the area of the figure to the nearest whole number. {$\pi =\frac{22}{7}$}

  Options:
  A) 90cm²
  B) 89cm²
  C) 80cm²
  D) 70cm²
  Show Answer
  The correct answer is A .
• Question 1390:

  Express $(0.0439÷3.62)$ as a fraction.

  Options:
  A) $\frac{21}{100}$
  B) $\frac{21}{1000}$
  C) $\frac{12}{1000}$
  D) $\frac{12}{100}$
  Show Answer
  The correct answer is C .