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 1121: The diameter of a metal rod is measured as 23.40cm 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 1122: If two graphs y = px² + q and y = 2x² -1 intersect at x = 2, find the value of p in terms q. Options:
  A) $\frac{q-8}{7}$
  B) $\frac{7-q}{4}$
  C) $\frac{8-q}{2}$
  D) $\frac{7+q}{8}$
  Show Answer
  The correct answer is B .
• Question 1123: Find correct to one decimal place, 0.24633 $÷$ 0.0306 Options:
  A) 0.8
  B) 1.8
  C) 8.0
  D) 8.1
  Show Answer
  The correct answer is D .
• Question 1124: The chord ST of a circle is equal to the radius, r, of the circle. Find the length of arc ST. Options:
  A) πr/6
  B) πr/2
  C) πr/12
  D) πr/3
  Show Answer
  The correct answer is D .
• Question 1125: The formula Q = 1.5 + 0.5n gives the cost Q(in Naira)of feeding n people one additional person Options:
  A) 350k
  B) 200k
  C) 150k
  D) 50k
  Show Answer
  The correct answer is B .
• Question 1126: Solve the inequality (x - 3)(x - 4) $\le$ 0
  Options:
  A) 3 $\le$ x $\le$ 4
  B) 3 < x < 4
  C) 3 $\le$ x < 4
  D) 3 < x $\le$ 4
  Show Answer
  The correct answer is A .
• Question 1127: Find the value of x for which the function y = x³ - x has a minimum value. Options:
  A) $-\sqrt{3}$
  B) $-\sqrt{\frac{3}{3}}$
  C) $\sqrt{\frac{3}{3}}$
  D) $\sqrt{3}$
  Show Answer
  The correct answer is C .
• Question 1128: Find x if (x_base4)² = 100100_base2 Options:
  A) 6
  B) 12
  C) 100
  D) 210
  E) 110
  Show Answer
  The correct answer is B .
• Question 1129:

  

  If K is a constant, which of the following equations best describes the parabola?

  Options:
  A) y = kx²
  B) x = y² - k
  C) y = k - x²
  D) x² = y² - k
  E) y = (k - x)²
  Show Answer
  The correct answer is B .
• Question 1130: In base ten, the number 101101 (base 2) equals Options:
  A) 15
  B) 4
  C) 45
  D) 32
  E) 90
  Show Answer
  The correct answer is C .