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 1681: Simplify 7$\frac{1}{12}$ - 4$\frac{3}{2}$ + 2$\frac{1}{2}$ Options:
  A) 4
  B) 4$\frac{1}{6}$
  C) 4$\frac{5}{6}$
  D) 5$\frac{1}{6}$
  Show Answer
  The correct answer is C .
• Question 1682: If the lines 2y - kx + 2 = 0 and y + x - $\frac{k}{2}$ = 0 intersect at (1, 2), find the value of k Options:
  A) -2
  B) -4
  C) -1
  D) -3
  Show Answer
  The correct answer is A .
• Question 1683:

  

  In the figure, FGHJ is a circle of radius 3cm centre O. FOH, GOJ are perpendicular diameters. With G as centre of an arc of a circle is drawn to pass through F and H. Find the length of the perimeter of the lunar portion shaded.

  Options:
  A) 3$\pi$$\sqrt{2-1}$cm
  B) $\frac{9}{2}$$\pi$cm
  C) 3 $\pi$(1 + $\frac{2}{2}$)
  D) 3(1 + $\frac{2}{2}$)
  Show Answer
  The correct answer is C .
• Question 1684: Find the minimum value of the function y = x(1+x) Options:
  A) -¹/₄
  B) -¹/₂
  C) ¹/₄
  D) ¹/₂
  Show Answer
  The correct answer is A .
• Question 1685: Find the number of ways of selecting 6 out of 10 subjects for an examination Options:
  A) 128
  B) 216
  C) 215
  D) 210
  Show Answer
  The correct answer is D .
• Question 1686: Simplify $\frac{9^{\frac{1}{3}}\times {27}^{-\frac{1}{3}}}{3^{-\frac{1}{6}}\times 3^{\frac{2}{3}}}$ Options:
  A) $\frac{1}{3}$
  B) 1
  C) 3
  D) 9
  Show Answer
  The correct answer is B .
• Question 1687:

  A cylinder pipe, made of metal is 3cm thick.If the internal radius of the pipe is 10cm.Find the volume of metal used in making 3m of the pipe.

  Options:
  A) 153$\pi$cm³
  B) 207$\pi$cm³
  C) 15 300$\pi$cm³
  D) 20 700$\pi$cm³
  Show Answer
  The correct answer is D .
• Question 1688:

  $\begin{array}{cccccc}x& 1& 2& 3& 4& 5\\ f& 2& 1& 2& 1& 2\end{array}$

  Find the variance of the frequency distribution above

  Options:
  A) $\frac{3}{2}$
  B) $\frac{9}{4}$
  C) $\frac{5}{2}$
  D) 3
  Show Answer
  The correct answer is B .
• Question 1689:

  

  The triangle PQR above is

  Options:
  A) an obtuse-angled triangle
  B) a scalene triangle
  C) an isosceles triangle
  D) an equilateral triangle
  Show Answer
  The correct answer is C .
• Question 1690: Twice a number, x, is added to 5, the result is at least 11. What is the range of values of x?
  Options:
  A) x > 3
  B) x ≥ 3
  C) x ≤ 3
  D) x < 3
  E) x ≤ -3
  Show Answer
  The correct answer is B .