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 111: Evaluate 21.05347 - 1.6324 x 0.43 to 3 decimal places Options:
  A) 20.980
  B) 20.351
  C) 20.981
  D) 20.352
  Show Answer
  The correct answer is D .
• Question 112: Given that log 2 = 0.3010, log 7 = 0.8451. Evaluate log 112. Options:
  A) 2.1461
  B) 2.0491
  C) 3.1461
  D) 2.5441
  Show Answer
  The correct answer is B .
• Question 113: if (x - 1), (x + 1) and (x - 2) are factors of the polynomial ax³ + bx² + cx - 1, find a, b, c in that order. Options:
  A) -1/2, 1., 1/2
  B) 1/2, 1, 1/2
  C) 1/2, 1, -1/2
  D) 1/2, -1, 1/2
  Show Answer
  The correct answer is A .
• Question 114: If f(x) = 2(x - 3)² + 3(x - 3) + 4 and g(y) = 5 + y, find g [f(3)] and f[g(4)]. Options:
  A) 3 and 4
  B) -3 and 4
  C) -3 and -4
  D) 3 and -4
  E) 0 and 5
  Show Answer
  The correct answer is A .
• Question 115: If y = 2x - sin2x, find dy/dx when x = π/4 Options:
  A) π
  B) -π
  C) π/2
  D) -π/2
  Show Answer
  The correct answer is D .
• Question 116: Find the number of sides of a regular polygon whose interior angle is twice the exterior angle. Options:
  A) 6
  B) 2
  C) 3
  D) 8
  Show Answer
  The correct answer is A .
• Question 117: The locus of a point which is equidistant from two given fixed points is the Options:
  A) perpendicular bisector of the straight line joining them
  B) parallel line to the straight line joining them
  C) transverse to the straight line joining them
  D) angle bisector of 90^o which the straight line joining them makes with the horizontal
  Show Answer
  The correct answer is A .
• Question 118: Simplify $\frac{\sqrt{1+x}+\sqrt{x}}{\sqrt{1+x}-\sqrt{x}}$ Options:
  A) -2x - 2$\sqrt{x(1+x)}$
  B) 1 + 2x + 2$\sqrt{x(1+x)}$
  C) $\sqrt{x(1+x)}$
  D) 1 + 2x - 2$\sqrt{x(1+x)}$
  Show Answer
  The correct answer is B .
• Question 119: Calculate the volume of a cuboid of length 0.76cm, breadth 2.6cm and height 0.82cm. Options:
  A) 3.92cm³
  B) 2.13cm³
  C) 1.97cm³
  D) 1.62cm³
  Show Answer
  The correct answer is D .
• Question 120: Write the equation 2 log₂x - x log₂(1 + y) = 3 in a form not involving logarithms Options:
  A) 2^x(1 + y) = 3
  B) 2^x - x(1 + y) = 8
  C) x² = 8(1 + y)^x
  D) x² - x(1 + y) = 8
  E) x² - (1 + y)² = 8
  Show Answer
  The correct answer is C .