NECO Mathematics Exam Past Questions and Answers

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 271: A sales boy gave a change of N75.00 to a buyer instead of N80.00, calculate his percentage error, correct to one decimal place? Options:
  A) 6.00%
  B) 6.20%
  C) 6.30%
  D) 6.60%
  E) 6.70%
  Show Answer
  The correct answer is C.
• Question 272: Evaluate (Log₁₃ - log₅) ÷ X(log₅-log₁₃) without using tables Options:
  A) X
  B) –x
  C) X-1
  D) –X^-1
  E) -1
  Show Answer
  The correct answer is D.
• Question 273: The roots of a quadratic equation in x, are -m and 2n. Fine equation. Options:
  A) x² - x(2n-m) – 2mn = 0
  B) x² + x(2n - m) - 2mn = 0
  C) x² + x(m - 2n) + 2mn = 0
  D) X² + x (m + 2n ) + 2mn = 0
  E) x² - x (m - 2n) - 2mn = 0
  Show Answer
  The correct answer is A.
• Question 274: The bearing of Y from X is 0850. What is the bearing of X from Y? Options:
  A) 005°
  B) 095°
  C) 185°
  D) 265°
  E) 275°
  Show Answer
  The correct answer is D.
• Question 275: Four pupils have an average age of 12years and two other pupils of average age of 10.5years are added. What is the average age of the six pupils? Options:
  A) 10.5yrs.
  B) 11yrs.
  C) 11.5 yrs.
  D) 12yrs.
  E) 12.5yrs.
  Show Answer
  The correct answer is C.
• Question 276: A bag contains p dozens of bananas and 3q of these proved to be bad. If I buy one third of the goods ones, how many do I get? Options:
  A) P -3q
  B) $\frac{1}{3}$ (p - 3q)
  C) 3q
  D) 4p - q
  E) 12p - 3q
  Show Answer
  The correct answer is D.
• Question 277: If log₁₀² = 0.3010 and log₁₀³ = 0.4771, simplify: (Log₁₀⁸-log₉²) ÷ (Log₁₀⁹ - log₁₀²) Options:
  A) 4
  B) 3
  C) 0.0784
  D) -4
  E) -0.0784
  Show Answer
  The correct answer is E.
• Question 278:

  Find the value of t such that the expression $\frac{1}{t}$ + $\frac{4}{3}$ - $\frac{5}{6t}$ + 1 is equal to zero

  Options:
  A) $\frac{1}{6}$
  B) - $\frac{1}{14}$
  C) - $\frac{3}{2}$
  D) $\frac{7}{6}$
  E) $\frac{2}{5}$
  Show Answer
  The correct answer is B.
• Question 279: One of the interior angles of a regular polygon is 120°. Find the number of sides of the polygon Options:
  A) 3
  B) 4
  C) 6
  D) 9
  E) 12
  Show Answer
  The correct answer is C.
• Question 280: If cos x = 4/5, 0° $\le$ x $\le$ 90°, find the value of (1 + tan x)/(1 - tan x) Options:
  A) 9
  B) 7
  C) 4
  D) $\frac{7}{16}$
  E) $\frac{9}{25}$
  Show Answer
  The correct answer is B.