Probability – 28

28. A pair of fair dice is rolled together till a sum of either 5 or 7 is obtained. Then the probability that 5 comes before 7 is :

(a) 1/5
(b) 2/5
(c) 4/5
(d) none of these

Answer : (b)

Explanation : No answer description available for this question. Let us discuss.

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