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 251: The parallel sides of a trapezium are 13cm and 7cm. If the area of the trapezium is 50cm2, find the perpendicular distance between the parallel sides. Options:
  A) 5cm
  B) 6cm
  C) 7cm
  D) 10cm
  E) 12cm
  Show Answer
  The correct answer is A.
• Question 252: Two fair dice are tossed together once. What is the probability of getting a total of at least 9 from the outcome? Options:
  A) $\frac{1}{9}$
  B) $\frac{1}{6}$
  C) $\frac{5}{18}$
  D) $\frac{1}{3}$
  E) $\frac{13}{18}$
  Show Answer
  The correct answer is C.
• Question 253: If 2x : ( x + 1) = 3 : 2, what is the value of x? Options:
  A) $\frac{1}{2}$
  B) 1
  C) 1$\frac{1}{2}$
  D) 3
  E) 3$\frac{1}{2}$
  Show Answer
  The correct answer is D.
• Question 254: If y²+ 14y + k is a perfect square, then k = Options:
  A) 4
  B) 7
  C) 28
  D) 49
  E) 196
  Show Answer
  The correct answer is D.
• Question 255: Find the surface area of a sphere whose radius is 3.5cm, correct your answer to one decimal place (π = $\frac{22}{5}$) Options:
  A) 12.8cm²
  B) 25.7cm²
  C) 77.0cm²
  D) 154.0cm²
  E) 179.7cm²
  Show Answer
  The correct answer is D.
• Question 256: Two angles of a triangle are 450 each and its longest side is 12cm. Find the length of one of the other sides Options:
  A) 12cm
  B) 9$\sqrt{2}$cm
  C) 6$\sqrt{2}$cm
  D) 6cm
  E) 3$\sqrt{2}$cm
  Show Answer
  The correct answer is C.
• Question 257: The nth term of a sequence is given as 4 x 3(3 - n). Calculate the third term. Options:
  A) 12
  B) 32
  C) 4
  D) 3
  E) 1
  Show Answer
  The correct answer is C.
• Question 258: If y varies inversely as x², how does x vary with y? Options:
  A) x varies inversely as y²
  B) x varies inversely as $\sqrt{y}$
  C) x varies directly as y²
  D) x varies directly as $\sqrt{y}$
  E) x varies directly as y
  Show Answer
  The correct answer is B.
• Question 259:

  Evaluate ${1011}_{two}$ + ${1101}_{two}$ + ${1001}_{two}$ - ${111}_{two}$

  Options:
  A) 10001${}_{two}$
  B) 11001${}_{two}$
  C) 110001${}_{two}$
  D) 11010${}_{two}$
  E) 10001${}_{two}$
  Show Answer
  The correct answer is D.
• Question 260:

  Find the area of a triangle ABC such that a = 16cm, b = 14cm, c = 12cm, leave your answer in surd form

  Options:
  A) 5$\sqrt{15}$cm²
  B) 7$\sqrt{15}$cm²
  C) 21$\sqrt{3}$cm²
  D) 21$\sqrt{5}$cm²
  E) 21$\sqrt{15}$cm²
  Show Answer
  The correct answer is E.