An experiment consist of rolling two fair number cubes. find the probability of each event.
9). p (total shown=3)

Probability = (number of possible successes) / (number of total possibilities).

Number of total possibilities:
Each cube can come up in 6 different ways.
Total number of possibilities = 6 x 6 = 36

Possible successes:
There are  2  different ways to roll a  3 . . .

1 . . . 2
or
2 . . . 1

The probability is  3/36  =  1/12  =  0.0833...  =  (8 and 1/3) percent