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 741:

  If (x - a) is a factor of bx - ax + x², find the other factor.

  Options:
  A) (x + b)
  B) (x - b)
  C) (a + b)
  D) (a - b)
  Show Answer
  The correct answer is A .
• Question 742: A sector of a circle is bounded by two radii 7cm long and an arc length 6cm. Find the area of the sector. Options:
  A) 42cm²
  B) 3cm²
  C) 21cm²
  D) 24cm²
  E) 12cm²
  Show Answer
  The correct answer is C .
• Question 743: The operation * on the set R of real number is defined by x * y = 3x + 2y − 1, find 3* − 1 Options:
  A) 9
  B) - 9
  C) 6
  D) - 6
  Show Answer
  The correct answer is C .
• Question 744:

  

  The pie chart above illustrate the amount of private time a student spends in a week studying various subjects. Find the value of k

  Options:
  A) 90${}^{\circ }$
  B) 60${}^{\circ }$
  C) 30${}^{\circ }$
  D) 40${}^{\circ }$
  Show Answer
  The correct answer is C .
• Question 745: Calculate the area of a parallelogram whose diagonals are of length 8cm and 12cm and intersect at an angle of 135° Options:
  A) 271.5cm²
  B) 135.8cm²
  C) 96.0cm²
  D) 48.0cm²
  E) 33.9cm²
  Show Answer
  The correct answer is E .
• Question 746: Evaluate $\frac{8^{\frac{1}{3}}\times 5^{\frac{2}{3}}}{{10}^{\frac{2}{3}}}$ = $\frac{8^{\frac{1}{3}}\times 5^{\frac{2}{3}}}{{10}^{\frac{2}{3}}}$ Options:
  A) $\frac{2}{5}$
  B) $\frac{5}{3}$
  C) 3$\sqrt{5}$
  D) 3$\sqrt{2}$
  Show Answer
  The correct answer is D .
• Question 747: The locus of a point equidistant from the intersection of lines 3x - 7y + 7 = 0 and 4x - 6y + 1 = 0 is a Options:
  A) line parallel to 7x + 13y + 8 = 0
  B) circle
  C) semicircle
  D) bisector of the line 7x + 13y + 8 = 0
  Show Answer
  The correct answer is A .
• Question 748:

  Evaluate ${\int }_{-4}^0(1-2x)dx$

  Options:
  A) -16
  B) -20
  C) 20
  D) 10
  Show Answer
  The correct answer is C .
• Question 749: The diameter of a metal rod is measured as 23.40 cm to four significant figures. What is the maximum error in the measurement? Options:
  A) 0.05cm
  B) 0.5cm
  C) 0.045cm
  D) 0.005cm
  E) 0.004cm
  Show Answer
  The correct answer is D .
• Question 750: If 2log₃ y + log₃ x² = 4, then y is Options:
  A) 4 - log₃
  B) $\frac{4}{lo{g}_{3}x}$
  C) $\frac{4}{x}$
  D) $\pm$ $\frac{9}{x}$
  Show Answer
  The correct answer is D .