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 2731:

  A binary operation * is defined by a*b = ab+a+b for any real number a and b. if the identity element is zero, find the inverse of 2 under this operation.

  Options:
  A) 2/3
  B) 1/2
  C) -1/2
  D) -2/3
  Show Answer
  The correct answer is D .
• Question 2732: The ratio of the circumference to the diameter of a circle is approximately of a circle is approximately equal to Options:
  A) 2.5
  B) 3.14
  C) 4.83
  D) 6.52
  E) 7
  Show Answer
  The correct answer is B .
• Question 2733: If 2x : ( x + 1) = 3 : 2, what is the value of x? Options:
  A) $\frac{1}{2}$
  B) 1
  C) 1$\frac{1}{2}$
  D) 3
  E) 3$\frac{1}{2}$
  Show Answer
  The correct answer is D .
• Question 2734: If $\sin \theta =\frac{12}{13}$, find the value of $1+\cos \theta$ Options:
  A) $\frac{25}{13}$
  B) $\frac{18}{13}$
  C) $\frac{8}{13}$
  D) $\frac{5}{13}$
  Show Answer
  The correct answer is B .
• Question 2735: Four members of a school first eleven cricket team are also members of the first fourteen rugby team. How many boys play for at least one of the two teams? Options:
  A) 25
  B) 21
  C) 16
  D) 3
  Show Answer
  The correct answer is B .
• Question 2736:
  

  From the diagram above, find the required roots/region of x.

  Options:
  A) x$\le$-1, x $\ge$4
  B) x$\le$4
  C) -1$\le$x$\le$4
  D) x$\le$-1, o$\le$x$\le$4
  Show Answer
  The correct answer is C .
• Question 2737: The first term of a geometric progression is twice its common ratio. Find the sum of the first two terms of the G.P if its sum to infinity is 8. Options:
  A) 8/5
  B) 8/3
  C) 72/25
  D) 56/9
  Show Answer
  The correct answer is C .
• Question 2738: A hollow right prism of equilateral triangular base of side 4cm is filled with water up to a certain height. If a sphere of radius $\frac{1}{2}$cm is immersed in the water, then the rise of water is Options:
  A) 1cm
  B) $\sqrt{\frac{3\pi }{24}}$
  C) $\frac{\pi }{24\sqrt{3}}$
  D) 24$\sqrt{3}$
  Show Answer
  The correct answer is C .
• Question 2739: Find the derivatives of (2 + 3x)(1 - x) with respect to x Options:
  A) 6
  B) -3
  C) 1 - 6x
  D) 6x - 1
  Show Answer
  The correct answer is C .
• Question 2740:

  X is due east point of y on a coast. Z is another point on the coast but 6.0km due south of Y. If the distance ZX is 12km, calculate the bearing of Z from X

  Options:
  A) 240°
  B) 150°
  C) 60°
  D) 270°
  Show Answer
  The correct answer is A .