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WAEC Mathematics 2021 Question 47

Question 47

Probability

A fair die is tossed twice. What is the probability of getting a sum of at least 10?

  1. A.5/36
  2. B.2/3
  3. C.5/18
  4. D.1/6
Show the answer and explanation

Answer: D (1/6)

Explanation

Sums of 10 or more: (4,6), (5,5), (6,4), (5,6), (6,5), (6,6) – 6 of the 36 outcomes, so 6/36 = 1/6.