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 391: Find the maximum value of y in the equation y = 1 - 2x - 3x² Options:
  A) 5/4
  B) 5/3
  C) 3/4
  D) 4/3
  Show Answer
  The correct answer is D .
• Question 392: Integrate $\frac{1}{x}$ + cos x with respect to x Options:
  A) -$\frac{1}{x^2}$ + sin x + k
  B) x + sin x - k
  C) x - sin x + k
  D) -$\frac{1}{x^2}$ - sin x + k
  Show Answer
  The correct answer is C .
• Question 393:

  

  The table above shows the scores of a group of students in a physics test. If the mode is m and the number of students who scored 4 or more is n, what is (n, m)?

  Options:
  A) (33, 4)
  B) (22, 4)
  C) (33, 12)
  D) (12, 4)
  Show Answer
  The correct answer is A .
• Question 394: 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 395: If 2x + 3y = 1 and x - 2y = 11, find (x + y) Options:
  A) 5
  B) -3
  C) 8
  D) 2
  E) -2
  Show Answer
  The correct answer is D .
• Question 396:

  A sector of circle of radius 7.2cm which substends an angle of 300${}^o$ at the centre is used to form a cone. What s the radius of the base of the cone?

  Options:
  A) 8cm
  B) 9cm
  C) 6cm
  D) 7cm
  Show Answer
  The correct answer is C .
• Question 397:

  

  In this figure, PQ = PR = PS and SRT = 68${}^{\circ }$. Find QPS.

  Options:
  A) 136${}^{\circ }$
  B) 124${}^{\circ }$
  C) 12${}^{\circ }$
  D) 68${}^{\circ }$
  Show Answer
  The correct answer is A .
• Question 398: The shadow of a pole 5√3m high is 5m. Find the angle of elevation of the sun. Options:
  A) 45${}^{\circ }$
  B) 75${}^{\circ }$
  C) 30${}^{\circ }$
  D) 60${}^{\circ }$
  Show Answer
  The correct answer is D .
• Question 399:

  A room is 12m long, 9m wide and 8m high. Find the cosine of the angle which a diagonal of the room makes with the floor of the room.

  Options:
  A) $\frac{15}{17}$
  B) $\frac{9}{17}$
  C) $\frac{8}{15}$
  D) $\frac{12}{17}$
  Show Answer
  The correct answer is A .
• Question 400: A bag contains 5 black, 4 white and x red marbles. If the probability of picking a red marble is ²/₃, find the value of x Options:
  A) 8
  B) 10
  C) 4
  D) 6
  Show Answer
  The correct answer is D .