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 241: Calculate without using tables Tan 45° + Cos 60° Options:
  A) $\sqrt{\frac{3}{2}}$ - 1
  B) $\frac{1}{2}$
  C) 1$\frac{1}{2}$
  D) $\sqrt{\frac{3}{2}}$ + 1
  E) 2
  Show Answer
  The correct answer is C.
• Question 242: A is at 50°N and B is at 10°N, If A and B are on the same longitude, find the distance AS. Correct your answer to Four significant figures. (Earth radius = 6400km) Options:
  A) 6468km
  B) 5469km
  C) 4470km
  D) 3470km
  E) 2488km
  Show Answer
  The correct answer is C.
• Question 243: If log 3 = 0.4771 and log 2 = 0.3010, what is the value of log 12? Options:
  A) 0.0432
  B) 0.4322
  C) 1.0791
  D) 1.2552
  E) 1.5225
  Show Answer
  The correct answer is C.
• Question 244: If 7 is subtracted from twice a certain number x, the result is at most 5. What is the range of the number?
  Options:
  A) x < 2
  B) x < 3
  C) x < 4
  D) x < 5
  E) x < 6
  Show Answer
  The correct answer is E.
• Question 245: Find the standard deviation of the numbers 6, 9, 10, 8 and 7 Options:
  A) 1.4
  B) 2
  C) 2.4
  D) 5
  E) 8
  Show Answer
  The correct answer is A.
• Question 246: Simplify P^-6 × P³ × P² ÷ P⁴ × P⁰ Options:
  A) p⁵
  B) p⁴
  C) p³
  D) p^-3
  E) p^-5
  Show Answer
  The correct answer is E.
• Question 247:

  3 - 7, 8 - 12, 13 - 17, 18 - 22. Which of the following is/are true?

  I. The class Interval is 4

  II. The class boundaries are 2.5, 7.5, 12.5, 18.5, 22.5

  III. The mid-marks are 5, 10, 15, and 20

  Options:
  A) I only
  B) II only
  C) III only
  D) I and II only
  E) II and III only
  Show Answer
  The correct answer is A.
• Question 248: T varies directly as D and inversely as A. Given that T = 6, D = 3, and A = 2, find A when T = 3 and D = 6. Options:
  A) 4
  B) 6
  C) 8
  D) 12
  E) 24
  Show Answer
  The correct answer is C.
• Question 249: A chord 20cm long subtends an angle of 60° at the circumference of a circle, what is the diameter of the circle the nearest cm? Options:
  A) 12cm
  B) 20cm
  C) 23cm
  D) 60cm
  E) 80cm
  Show Answer
  The correct answer is C.
• Question 250: If 25a² = 5^-1 × 125. Find the value of a? Options:
  A) a = -1
  B) a = 1
  C) a = ±1
  D) a = ±5
  E) a = 25
  Show Answer
  The correct answer is C.