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 451:

  What is the n-th term of the sequence 2, 6, 12, 20...?

  Options:
  A) 4n - 2
  B) 2(3^{n - 1})
  C) n² + n
  D) n² + 3n + 2
  Show Answer
  The correct answer is C .
• Question 452: Calculate the length in cm. of the area of a circle of diameter 8cm which subtends an angle of 22$\frac{1}{2}$^o at the centre of the circle Options:
  A) 2$\pi$
  B) $\pi$
  C) $\frac{2}{3}$
  D) $\frac{\pi }{2}$
  Show Answer
  The correct answer is D .
• Question 453: The binary operation $\oplus$ is defined by x $\ast$ y = xy - y - x for all real values x and y. If x $\ast$ 3 = 2$\ast$, find x Options:
  A) -1
  B) 4
  C) 1
  D) 5
  Show Answer
  The correct answer is C .
• Question 454: What is the value of r if the distance between the point (4,2) and (1,r) is 3 units? Options:
  A) 1
  B) 2
  C) 3
  D) 4
  Show Answer
  The correct answer is B .
• Question 455: The radius r of a circular disc is increasing at the rate of 0.5cm/sec. At what rate is the area of the disc increasing when its radius is 6cm? Options:
  A) 36 π cm²/sec
  B) 18 π cm²/sec
  C) 6 π cm²/sec
  D) 3 π cm²/sec
  Show Answer
  The correct answer is C .
• Question 456: If 27^{x + 2} $÷$ 9^{x + 1} = 3^2x, find x Options:
  A) 3
  B) 4
  C) 5
  D) 6
  Show Answer
  The correct answer is B .
• Question 457:

  Evaluate without using tables sin(-1290${}^{\circ }$)

  Options:
  A) $\frac{3}{2}$
  B) -$\frac{3}{2}$
  C) $\frac{2}{2}$
  D) 1
  E) $\frac{1}{2}$
  Show Answer
  The correct answer is E .
• Question 458:

  The locus of a point which moves so that it is equidistant from two intersecting straight lines is the

  Options:
  A) bisector of the two lines
  B) line parallel to the two lines
  C) angle bisector of the two lines
  D) perpendicular bisector of the two lines
  Show Answer
  The correct answer is A .
• Question 459: Each of the interior angles of a regular polygon is 140^o. How many sides has the polygon? Options:
  A) 9
  B) 8
  C) 7
  D) 5
  Show Answer
  The correct answer is A .
• Question 460: 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 .