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 2041:

  If (x + 2) and (x - 1) are factors of the expression $Lx+2k{x}^2+24$, find the values of Land k.

  Options:
  A) l = -12, k = -6
  B) l = -2 , k = 1
  C) l = -2 , k = -1
  D) l = 0, k = 1
  Show Answer
  The correct answer is A .
• Question 2042: For which of the following exterior angles is a regular polygon possible? i. 36^o ii. 18^o iii. 15^o Options:
  A) i and ii
  B) ii only
  C) ii and iii
  D) iii only
  Show Answer
  The correct answer is C .
• Question 2043: The expression ax² + bx + c equals 5 at x = 1. If its derivative is 2x + 1, what are the values of a, b, c respectively? Options:
  A) 1, 3, 1
  B) 1, 2, 1
  C) 2, 1, 1
  D) 1, 1, 3
  Show Answer
  The correct answer is D .
• Question 2044:

  Marks	1	2	3	4	5
  Frequency	2	2	8	4	4

  The table above show the marks obtained in a given test.

  Find the mean mark

  Options:
  A) 3.1
  B) 3.0
  C) 3.2
  D) 3.3
  Show Answer
  The correct answer is D .
• Question 2045: Rationalize $\frac{\sqrt{6}-\sqrt{4}}{\sqrt{6}+\sqrt{4}}$ Options:
  A) 5 + 2 $\sqrt{6}$
  B) 5 - 4 $\sqrt{6}$
  C) 5 + 4 $\sqrt{6}$
  D) 5 - 2 $\sqrt{6}$
  Show Answer
  The correct answer is D .
• Question 2046: Solve the following simultaneous equation for x. x² + y - 5 = 0, y - 7x + 3 = 0 Options:
  A) -2, 4
  B) 2, 4
  C) -1,8
  D) 1, -8
  Show Answer
  The correct answer is D .
• Question 2047: Find r, if 6r7₈ = 511₉ Options:
  A) 3
  B) 2
  C) 6
  D) 5
  Show Answer
  The correct answer is A .
• Question 2048: Express $\frac{1}{x+1}$ - $\frac{1}{x-2}$ as a single algebraic fraction Options:
  A) $\frac{-3}{(x+1)(2-x)}$
  B) $\frac{3}{(x+1)(2-x)}$
  C) $\frac{-1}{(x+1)}$
  D) $\frac{1}{(x+1)(x-2)}$
  Show Answer
  The correct answer is A .
• Question 2049: If e^x = 1 + $\frac{x}{2}$ + $\frac{x^2}{1.2}$ + $\frac{x^3}{1.2.3}$ + .....Find $\frac{1}{e^x}$ Options:
  A) 1 - $\frac{x}{2}$ + $\frac{x^2}{{1.2}^3}$ + $\frac{x^3}{2^4.3}$ + .........
  B) 1 - $\frac{x}{2}$ + $\frac{x^2}{{1.2}^3}$ + $\frac{x^4}{2.4.3}$ + ..
  C) 1 + $\frac{x}{2}$ + $\frac{x^2}{1.2}$ + $\frac{x^3}{1.2.3}$ + $\frac{x^4}{1.23.4}$ + .........
  D) 1 - x + $\frac{x^2}{{1.2}^3}$ + $\frac{x^3}{2^4.3}$ + .........
  E) 1 + $\frac{x}{2}$ + $\frac{x^2}{{1.2}^3}$ + $\frac{x^4}{1.2.6}$ + .........
  Show Answer
  The correct answer is C .
• Question 2050: Find the mean deviation of 20, 25, 21, 27, 28, 29, to the nearest whole number Options:
  A) 2
  B) 3
  C) 4
  D) 5
  E) 6
  Show Answer
  The correct answer is B .