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 341: Simplify $\sqrt{6a}\times \sqrt{576a^6}$ Options:
  A) ± 16a2
  B) ± 16a
  C) ± 14a2
  D) ± 12a2
  E) ± 12a
  Show Answer
  The correct answer is D.
• Question 342: Find the value of x in the equation: 9x = 729 Options:
  A) 81
  B) 27
  C) 18
  D) 9
  E) 3
  Show Answer
  The correct answer is A.
• Question 343: In an acute angle-triangle XYZ, XZ = 9cm, YZ = 11cm and ∠XZY = 35° Calculate ∠YXZ, correct to the nearest degree. Options:
  A) 57°
  B) 45°
  C) 33°
  D) 16°
  E) 89°
  Show Answer
  The correct answer is E.
• Question 344: The surface area of a sphere is 616m2. what is the volume of-the sphere (correct to two significant figures)? (take π = 3.142) Options:
  A) 14 cm${}^3$
  B) 210 cm${}^3$
  C) 1,400 cm${}^3$
  D) 2,100 cm${}^3$
  E) 4,300 cm${}^3$
  Show Answer
  The correct answer is C.
• Question 345: 51 women wore coloured shoes to a party, out of which 21 wore purple and 9 wore white. if a woman is selected at Random. What is the probability that she is wearing neither a purple shoe nor a white shoe? Options:
  A) $\frac{10}{17}$
  B) $\frac{7}{5}$
  C) $\frac{20}{51}$
  D) $\frac{3}{17}$
  E) $\frac{1}{51}$
  Show Answer
  The correct answer is B.
• Question 346: The radius of a sphere is 21cm. If s and v represent the curved surface area and volume respectively, what is s : v? (take π = 3.142) Options:
  A) 1:03
  B) 1:07
  C) 3:01
  D) 3:07
  E) 7:01
  Show Answer
  The correct answer is B.
• Question 347: A trader sold an article for N4,600.00 thereby making a profit of 15%. Calculate the cost price of the article Options:
  A) N3450.00
  B) N3910.00
  C) N4000.00
  D) N5290.00
  E) N6900.00
  Show Answer
  The correct answer is C.
• Question 348: The first term of a G.P is 7. Find its 4th term, if its common ratio is 3. Options:
  A) 567
  B) 280
  C) 189
  D) 63
  E) 21
  Show Answer
  The correct answer is C.
• Question 349: Express 0.03785 in standard form correct to 3 significant figures. Options:
  A) 3 × 10${}^{-2}$
  B) 3.78 × 10${}^{-2}$
  C) 3.79 × 10${}^{-2}$
  D) 3.79 × 10${}^{-1}$
  E) 3.78 × 10${}^{-2}$
  Show Answer
  The correct answer is C.
• Question 350: Convert 101.011₂ to base 10 Options:
  A) 63
  B) 43
  C) 10
  D) $\frac{77}{8}$
  E) $\frac{53}{8}$
  Show Answer
  The correct answer is E.