Mathematics Exam Past Questions and Answers | JAMB, WAEC and NECO

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 1121: Factorize completely x²+2xy + y²+3x + 3y - 18 Options:
  A) (x+y+6)(x+y-3)
  B) (x-y-6)(x-y+3)
  C) (x-y+6)(x-y-3)
  D) (x+y-6)(x+y+3)
  Show Answer
  The correct answer is A .
• Question 1122: Calculate the standard deviation of the following data: 7, 8, 9, 10, 11, 12, 13. Options:
  A) 2
  B) 4
  C) 10
  D) 11
  Show Answer
  The correct answer is A .
• Question 1123: If x varies inversely as y, and y varies directly as the square root of z, and z varies directly $\frac{1}{w^2}$ write down in words how x varies with w Options:
  A) x varies inversely as w²
  B) x varies directly as w²
  C) x varies directly as w
  D) x varies inversely as w
  E) x varies directly as square root of w
  Show Answer
  The correct answer is B .
• Question 1124: If N25,000.00 is kept in a bank at the rate of 2% simple interest, how much will it amount to at the end of 5 years? Options:
  A) N2,500.00
  B) N5,000.00
  C) N12,500.00
  D) N27,500.00
  E) N125,000.00
  Show Answer
  The correct answer is D .
• Question 1125: A trader bought 100 oranges at 5 for N1.20, 20 oranges got spoilt and the remaining were sold at 4 for N1.50. Find the percentage gain or loss. Options:
  A) 30% gain
  B) 25% gain
  C) 30% loss
  D) 25% loss
  Show Answer
  The correct answer is B .
• Question 1126:

  

  The table above shows the number of pupils in each age group in a class. What is the probability that a pupil chosen at random is at least 1 years old?

  Options:
  A) ²⁷/₄₀
  B) ¹⁷/₂₀
  C) ³/₃₀
  D) ³³/₄₀
  Show Answer
  The correct answer is B .
• Question 1127:

  Calculate the median of 14, 17, 10, 13, 18 and 10.

  Options:
  A) 12.5
  B) 13.5
  C) 13.2
  D) 14.5
  Show Answer
  The correct answer is B .
• Question 1128:

  

  In the diagram above, O is the centre of the circle, If < UOT = 70${}^{\circ }$ and < RST = 100${}^{\circ }$. Calculate < RUO

  Options:
  A) 20${}^{\circ }$
  B) 25${}^{\circ }$
  C) 50${}^{\circ }$
  D) 80${}^{\circ }$
  Show Answer
  The correct answer is B .
• Question 1129: If three numbers P, Q, R are in ratio 6 : 4 : 5, find the value of $\frac{3p-q}{4q+r}$ Options:
  A) $\frac{3}{2}$
  B) $\frac{2}{3}$
  C) 2
  D) 3
  E) 18
  Show Answer
  The correct answer is B .
• Question 1130: On a square paper of length 2.524375cm is inscribed square diagram of length 0.524375cm. Find the area of the paper not covered by the diagram. correct to 3 significant figures. Options:
  A) 6.00cm²
  B) 6.10cm²
  C) 6cmv
  D) 6.09cm²
  E) 4.00cm²
  Show Answer
  The correct answer is B .