Two dies are rolled.

Question

Two dies are rolled. If both dices have six faces numbered 1, 2, 3, 5, 7 and 11, then the probability that the sum of the numbers on the top faces is less than or equal to 8 is :

Accepted Answer

n(S) = 36

possible ordered pair :

(1, 1), (1, 2), (1, 3), (1, 5), (1, 7),
(2, 1), (2, 2), (2, 3), (2, 5),
(3, 1), (3, 2), (3, 3), (3, 5),
(5, 1), (5, 2), (5, 3),
(7, 1)

Number of favourable outcomes = 17

Probability = $${{17} \over {36}}$$

Solutions · 1