When two dice are rolled find the probability of getting a sum less than 4 or greater than 9?

Answer 1

Here are the ways of rolling the dice that satisfy those conditions:

1 1

1 2

2 1

4 6

5 5

5 6

6 4

6 5

6 6

There are nine possibilities out of 36, hence, the probability is 9/36 = 1/4.