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 1551: 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 .
• Question 1552: An arc of the length 16$\pi$cm subtends an angle of 80^o at the centre of the circle. Find the radius of the circle. Options:
  A) 24cm
  B) 28cm
  C) 36cm
  D) 32cm
  Show Answer
  The correct answer is C .
• Question 1553: If y = x cos x, find dy/dx Options:
  A) sin x - x cos x
  B) sin x + x cos x
  C) cos x + x sin x
  D) cos x - x sin x
  Show Answer
  The correct answer is D .
• Question 1554:

  

  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 1555: Factorize 9(x + y)² - 4(x - y)² Options:
  A) (x + y)(5x + y)
  B) (x + y)²
  C) (x + 5y)(5x + y)
  D) 5(x + y)²
  Show Answer
  The correct answer is C .
• Question 1556: A binary operation $\oplus$ is defines on the set of all positive integers by a $\oplus$ b = ab for all positive integers a, b. Which of the following properties does NOT hold? Options:
  A) closure
  B) identity
  C) positive
  D) inverse
  Show Answer
  The correct answer is D .
• Question 1557: The angle subtended by a diameter of a circle at the circumference is a/an Options:
  A) acute angle
  B) obtuse angle
  C) reflex angle
  D) right angle
  E) supplementary angle
  Show Answer
  The correct answer is D .
• Question 1558: Solve the inequalities -6 $\le$ 4 - 2x < 5 - x. Options:
  A) -1 < x < 5
  B) -1 < x $\le$ 5
  C) -1 $\le$ x $\le$ 6
  D) -1 $\le$ x < 6
  Show Answer
  The correct answer is B .
• Question 1559: The inverse function f(x) = 3x + 4 is Options:
  A) (x-4)/3
  B) (x-5)/5
  C) (x+3)/4
  D) (x+4)/3
  Show Answer
  The correct answer is A .
• Question 1560:

  Evaluate $\frac{{27}^{\frac{1}{3}}-8^{\frac{2}{3}}}{{16}^{\frac{2}{4}}\times 2}$

  Options:
  A) $\frac{23}{5}$
  B) -$\frac{23}{5}$
  C) $\frac{1}{8}$
  D) $\frac{21}{7}$
  Show Answer
  The correct answer is C .