Question

A five-sided a solid has the numbers 1 2 3 4 and 5 what is the probability of rolling two five sided number solids and getting a sum of either 3 or 8

Answer 1

So:
1:  1  2  3  4  5
2:  1  2  3  4  5
3:  1  2  3  4  5
4:  1  2  3  4  5
5:  1  2  3  4  5
So: there are 25 possibilities
of those 25, only 2 give a sum of 3 and 3 give a sum of 8
so 5/25
is 1/5
which is 20% probability or 1/5