What is the probability of getting a sum 9 from two throws of a dice?

A 1/2

B 3/4

C 1/9

D 2/9

Correct Answer: Option C

In two throws of a die, n(S) = (6 x 6) = 36.

Let E = event of getting a sum ={(3, 6), (4, 5), (5, 4), (6, 3)}.

P(E) =n(E)/n(S)=4/36=1/9.