a) Fill this in like a multiplication table:
b) There are a total of 9 possible scores that one can get. Two of them result in a 6, meaning that the possibility of getting a 6 is 2/9, or 1/3, or 33.3%.
c) Do the same thing like you did in b. There are a total of 9 possible scores. 5 of them being over 10, that means the possibility to get a score over 10 is 5/9, or 55.55%