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 1531: The probability of picking a letter T fr4om the word OBSTRUCTION is Options:
  A) ¹/₁₁
  B) ²/₁₁
  C) ³/₁₁
  D) ⁴/₁₁
  Show Answer
  The correct answer is B .
• Question 1532: If the gradient of the curve y = 2kx² + x + 1 at x = 1 is 9, find k. Options:
  A) 4
  B) 3
  C) 2
  D) 1
  Show Answer
  The correct answer is C .
• Question 1533: An arc of length 22cm subtends an angle of θ at the center of the circle. What is the value of θ if the radius of the circle is 15cm?[Take π = 22/7] Options:
  A) 70^o
  B) 84^o
  C) 96^o
  D) 156^o
  E) 168^o
  Show Answer
  The correct answer is B .
• Question 1534: If a rod of length 250cm is measured as 255cm long in error, what is the percentage error in the measurement? Options:
  A) 55
  B) 10
  C) 5
  D) 4
  E) 2
  Show Answer
  The correct answer is E .
• Question 1535:

  

  The diagram is a circle with centre O. Find the area of the shaded portion.

  Options:
  A) 9($\pi -2)c{m}^2$
  B) 18$\pi c{m}^2$
  C) 9$\pi c{m}^2$
  D) 36$\pi c{m}^2$
  Show Answer
  The correct answer is A .
• Question 1536: Find the integral values of x and y satisfying the inequality 3y + 5x $\le$ 15, given that y > 0, y < 3 and x > 0. Options:
  A) (1,1), (1,2), (1,3)
  B) (1,1), (2,1), (1,3)
  C) (1,1), (3,1), (2,2)
  D) (1,1), (1,2), (2,1)
  Show Answer
  The correct answer is D .
• Question 1537: Determine the third term of a geometrical progression whose first and second term are 2 and 14 respectively Options:
  A) 1458
  B) 1485
  C) 1345
  D) 1258
  Show Answer
  The correct answer is A .
• Question 1538: If 125_x = 20₁₀ find x Options:
  A) 2
  B) 3
  C) 4
  D) 5
  Show Answer
  The correct answer is B .
• Question 1539:

  The maximum value of the function

  F(x) = 2 + x - x² is

  Options:
  A) 9/4
  B) 7/4
  C) 3/2
  D) 1/2
  Show Answer
  The correct answer is A .
• Question 1540:

  $\begin{array}{cccccc}\text{Marks}& 1& 2& 3& 4& 5\\ \text{Frequency}& 2& 2& 8& 4& 4\end{array}$

  The table above shows the marks obtained in a given test. How many students took the test?

  Options:
  A) 16
  B) 20
  C) 13
  D) 15
  Show Answer
  The correct answer is B .