2 people are playing against each other with die, 2 die, 1 of them is with 8 numbers the other is with 12, one rolls a 9 total sum using 2 of the die so let's say 8 with the first and 1 with the second, what are the chances he wins against the other person (so that he will get the highest number) I know the answer is 7/20 but how do you get the answer?