Probability statistic

Question

If two diced are rolled one time find the probability of getting a sum less than 9

Answer 1

The probability of rolling less than 9 is 100% - (probability of rolling 9 or more).

There are 6*6=36 possible outcomes. Of those, there are 10 possible outcomes of 9 or more: (6,3), (6,4), (6,5), (6,6), (5.4), (5,5), (5,6), (4,5), (4.6), (3,6)

So since there are 10/36 possible outcomes of 9 or more, there are 26/36 possible outcomes of less than 9, which is a percentage of 72.222...%