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 351: The probability of picking a letter T fr4om the word OBSTRUCTION is Options:
  A) ¹/₁₁
  B) ²/₁₁
  C) ³/₁₁
  D) ⁴/₁₁
  Show Answer
  The correct answer is B .
• Question 352:

  Tade bought 200 mangoes at 4 for ₦2.50. 30 out of the mangoes got spoilt and the remaining were sold at 2 for ₦2.40. Find the percentage profit or loss.

  Options:
  A) 43.6% loss
  B) 35% profit
  C) 63.2% profit
  D) 28% loss
  Show Answer
  The correct answer is C .
• Question 353:

  Two numbers are respectively 35% and 80% more than a third number. The ratio of the two numbers is

  Options:
  A) 7 : 16
  B) 3 : 4
  C) 16 : 7
  D) 4 : 3
  Show Answer
  The correct answer is B .
• Question 354: Solve without using tables log₅(62.5) - log₅($\frac{1}{2}$) Options:
  A) 3
  B) 4
  C) 5
  D) 8
  Show Answer
  The correct answer is A .
• Question 355: If 27^{x + 2} $÷$ 9^{x + 1} = 3^2x, find x Options:
  A) 3
  B) 4
  C) 5
  D) 6
  Show Answer
  The correct answer is B .
• Question 356: Given that 10^x = 0.2 and log₁₀2 = 0.3010, find x Options:
  A) -1.3010
  B) -0.6990
  C) 0.6990
  D) 1.3010
  E) 0.02
  Show Answer
  The correct answer is B .
• Question 357: Solve the inequality -6(x + 3) $\le$ 4(x - 2) Options:
  A) x $\le$ 2
  B) x $\ge$ -1
  C) x $\ge$ -2
  D) x $\le$ -1
  Show Answer
  The correct answer is B .
• Question 358:

  

  In the figure, YXZ = 30${}^{\circ }$, XYZ = 105${}^{\circ }$ and XY = 8cm. Calculate YZ

  Options:
  A) 16$\sqrt{2}$cm
  B) 8$\sqrt{2}$cm
  C) 4$\sqrt{2}$cm
  D) 22cm
  Show Answer
  The correct answer is C .
• Question 359: Let f(x) = 2x + 4 and g(x) = 6x + 7 here g(x) > 0. Solve the inequality $\frac{f(x)}{g(x)}$ < 1. Options:
  A) x < - $\frac{3}{4}$
  B) x > - $\frac{4}{3}$
  C) x > - $\frac{3}{4}$
  D) x > - 12
  Show Answer
  The correct answer is C .
• Question 360: Ice forms on a refrigerator ice-box at the rate of (4 - 06t)g per minute after t minutes. If initially there are 2g of ice in the box, find the mass of ice formed in 5 minutes Options:
  A) 19.5
  B) 17.0
  C) 14.5
  D) 12.5
  Show Answer
  The correct answer is C .