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 1641:

  Simplify 81${}^{\frac{-3}{4}}$ x 25${}^{\frac{1}{2}}$ x 243${}^{\frac{2}{5}}$

  Options:
  A) $\frac{2}{5}$
  B) $\frac{3}{5}$
  C) $\frac{5}{2}$
  D) $\frac{5}{3}$
  Show Answer
  The correct answer is D .
• Question 1642: Simplify $\frac{2\sqrt{3}+3\sqrt{5}}{3\sqrt{5}-2\sqrt{3}}$ Options:
  A) $\frac{19+4\sqrt{25}}{11}$
  B) $\frac{19+4\sqrt{15}}{11}$
  C) $\frac{19+2\sqrt{15}}{11}$
  D) $\frac{19+2\sqrt{15}}{19}$
  Show Answer
  The correct answer is B .
• Question 1643: Simplify $\frac{(\frac{2}{3}-\frac{1}{5})-\frac{1}{3}\text{of}\frac{2}{5}}{3-\frac{1}{1\frac{1}{2}}}$ Options:
  A) $\frac{1}{7}$
  B) 7
  C) $\frac{1}{3}$
  D) 3
  Show Answer
  The correct answer is A .
• Question 1644: 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 1645: If the length of a square is increased by 20% while while its width is decreased by 20% to form a rectangle, what is the ratio of the area of the rectangle to the area of the square? Options:
  A) 6 : 5
  B) 25 : 24
  C) 5 : 6
  D) 24 : 25
  Show Answer
  The correct answer is D .
• Question 1646: 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 1647:

  Find the equation of straight line passing through (2, 3) and perpendicular to the line $3x+2y+4=0$

  Options:
  A) 3y = 5x - 2
  B) y = $\frac{5}{3}\times -2$
  C) None of these
  D) 3y = 2x + 5
  Show Answer
  The correct answer is D .
• Question 1648: The factors of 9 - (x² - 3x - 1)² are Options:
  A) -(x - 4)(x + 1) (x - 1)(x - 2)
  B) (x - 4)(x - 2) (x - 1)(x + 1)
  C) -(x - 2)(x + 1) (x - 2) (x - 1)
  D) (x - 2)(x + 2) (x - 1)(x + 1)
  Show Answer
  The correct answer is A .
• Question 1649:

  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 1650: If the interest on N150.00 for 2¹/₂ years is N4.50, find the interest on N250.00 for 6 months at the same rate Options:
  A) N1.50
  B) N7.50
  C) N15.00
  D) N18.00
  Show Answer
  The correct answer is A .