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 631: Simplify 213₄ x 23₄ Options:
  A) 10311₄
  B) 10321₄
  C) 12231₄
  D) 13211₄
  Show Answer
  The correct answer is C .
• Question 632: If t varies inversely as the cube of s, and t = 24, when s = 3, find t when s = 2 Options:
  A) 8
  B) 24
  C) 27
  D) 81
  E) 648
  Show Answer
  The correct answer is D .
• Question 633: The probability of an event P is $\frac{3}{4}$ while that of another event Q is $\frac{1}{6}$. If the probability of both P and Q is $\frac{1}{2}$. What is the probability of either P or Q. Options:
  A) $\frac{1}{96}$
  B) $\frac{1}{8}$
  C) $\frac{5}{6}$
  D) $\frac{11}{12}$
  Show Answer
  The correct answer is C .
• Question 634: What is the mean of the data t, 2t - 1, t - 2, 2t - 1, 4t and 2t + 2? Options:
  A) 2t
  B) 2t - 1
  C) $\frac{2}{3}$t + 1
  D) 2t - $\frac{1}{3}$
  Show Answer
  The correct answer is D .
• Question 635: U is inversely proportional to the cube of V and U = 81 when V = 2. Find U when V = 3 Options:
  A) 24
  B) 27
  C) 32
  D) 36
  Show Answer
  The correct answer is A .
• Question 636: An arc of the length 16$\pi$cm subtends an angle of 80^o at the centre of the circle. Find the radius of the circle. Options:
  A) 24cm
  B) 28cm
  C) 36cm
  D) 32cm
  Show Answer
  The correct answer is C .
• Question 637: The chord ST of a circle is equal to the radius, r, of the circle. Find the length of arc ST. Options:
  A) πr/6
  B) πr/2
  C) πr/12
  D) πr/3
  Show Answer
  The correct answer is D .
• Question 638:

  At what points does the straight line y = 2x + 1 intersect the curve y = 2x² + 5x - 1?

  Options:
  A) (-2, -3) and($\frac{1}{2}$, 2)
  B) (1, 0), (1, 3)
  C) (4, 0) and (0,1)
  D) 2, 0) and (0,1)
  Show Answer
  The correct answer is A .
• Question 639: Find the median of the numbers 89, 141, 130, 161, 120, 131, 131, 100, 108 and 119 Options:
  A) 131
  B) 125
  C) 123
  D) 120
  Show Answer
  The correct answer is B .
• Question 640: Let p be a probability function on set S, where S = (a₁, a₂, a₃, a₄). Find P(a₁) if P(a₂) = $\frac{1}{3}$, p(a₃) = $\frac{1}{6}$ and p(a₄) = $\frac{1}{5}$ Options:
  A) $\frac{7}{3}$
  B) $\frac{2}{3}$
  C) $\frac{1}{3}$
  D) $\frac{3}{10}$
  Show Answer
  The correct answer is D .