3

2

There is 1/6 chance that both the rolls will be same. So, there's 5/6 chance that both rolls will be different

Now, for 2 rolls with different results, there can be 2 cases:

- 1st roll result is greater
- 2nd roll result is greater

We can see that the chances of these 2 cases will be equal ( = 1/2 ), eg. switch the 2 dice

So, answer = (5/6) x (1/2) = 5/12