WAEC Mathematics 2016 Question 31

Question 31

Probability

A fair die is thrown two times. What is the probability that the sum of the score is at least 10?

  1. A.5/36
  2. B.1/6
  3. C.5/18
  4. D.⅔
Show the answer and explanation

Answer: B (1/6)

Explanation

Sums of 10, 11 or 12 come from (4,6), (5,5), (6,4), (5,6), (6,5), (6,6): 6 of 36 outcomes = 1/6.