In a single roll of a pair of dice, what is the probability that you will get a sum of 8 or a double?

Answer 1

There are 5 rolls that give an 8:
2,6
3,5
4,4
5,3
6,2
notice one of them is a double

There are 6 rolls that give a double
1,1
2,2
3,3
4,4
5,5
6,6

So 5 + 6 (- the one 8 that's a double) = 10 different ways

A pair of dice has 36 possibilities (6*6)

So, 10/36 or 5/18 is the probability of getting an 8 or a double

Answer 2

10/36