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WAEC Mathematics 2017 Question 45

Question 45

Probability

Two bottles are drawn with replacement from a crate containing 8 coke, 12 fanta and 4 sprite bottles. What is the probability that the first is coke and the second is not coke?

  1. A.1/12
  2. B.1/6
  3. C.2/9
  4. D.⅜
Show the answer and explanation

Answer: C (2/9)

Explanation

P(coke) = 8/24 = ⅓ and P(not coke) = 16/24 = ⅔; with replacement the probability is ⅓ × ⅔ = 2/9.