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 231: If A(I,2,3,...,10) ; B = (-5,-4,.....,-1) ; C = (-1, 0, 1, 2,....5) List all the elements in (B ∪ C) ∩ A Options:
  A) (-1,2,...5)
  B) (-1,1,....5)
  C) (1,2,..5)
  D) (2,3,...10)
  E) (1,2,...10)
  Show Answer
  The correct answer is C.
• Question 232: What is the positive difference between the squares of 2.5 and 2.1 to 1 significant figures? Options:
  A) – 2.0
  B) – 184
  C) -1.84
  D) 2
  E) 18.4
  Show Answer
  The correct answer is D.
• Question 233: Find the value of 2a - b if a + b = 8 and 4a - b = 22 Options:
  A) 2
  B) 4
  C) 6
  D) 8
  E) 10
  Show Answer
  The correct answer is E.
• Question 234: A flagpole is placed at the top of a tower. The angles of elevation of the bottom and top of the flagpole from a point on the ground 10m away are 40° and 50° respectively. Find the length of the flagpole. Options:
  A) 1.8m
  B) 3.5m
  C) 8.4m
  D) 11.9m
  E) 17.3m
  Show Answer
  The correct answer is B.
• Question 235: Find the Iength of a diagonal of a square whose area is 288cm². Options:
  A) 24cm
  B) 48cm
  C) 95cm
  D) 100cm
  E) 124cm
  Show Answer
  The correct answer is A.
• Question 236: Solve for x in the quadratic equation. 2x² + 12x + 10 = 0 Options:
  A) x = -5, -1
  B) x = -5,1
  C) x = -3, -2
  D) x = 3, 2
  E) x = 6, 5
  Show Answer
  The correct answer is A.
• Question 237: A surveyor measured the length of a obtained 42.55 metres. If his measurement was more than the actual length and the percentage error of his measurement was 8%, calculate the actual length of the land Options:
  A) 39.40 metres
  B) 46.20 metres
  C) 46.25 metres
  D) 46.50 metres
  E) 48.25 metres
  Show Answer
  The correct answer is A.
• Question 238: Evaluate 0.0025 × 2.5 × 102 to 2 significant figures. Options:
  A) 0.625 × 10^-3
  B) 0.63 × 10^-2
  C) 6.25 × 10^-3
  D) 6.3 × 10^-2
  E) 6.3 × 10^-1
  Show Answer
  The correct answer is E.
• Question 239: What is the Value Of 11101${}_{two}$+ 10011${}_{two}$ - 10001${}_{two}$ Options:
  A) 10001${}_{two}$
  B) 10011${}_{two}$
  C) 10111${}_{two}$
  D) 11111${}_{two}$
  E) 111111${}_{two}$
  Show Answer
  The correct answer is E.
• Question 240: A ship sails 6km from a port on a bearing 070° and then 8km on a bearing of 040°. Find the distance from the port. Options:
  A) 7.21km
  B) 13.53km
  C) 16.86km
  D) 44.57km
  E) 67.17km
  Show Answer
  The correct answer is B.