Answer:
3rd answer
Explanation:
Two dice with #s 1-6
To roll a sum of 7, the 2 numbers have to add up to 7.
First die Second die
1 6
2 5
3 4
4 3
5 2
6 1
Each of those combinations adds up to 7. There are 6 of them. The total number of possibilities of rolls is 6 x 6 = 36.
Probability is favorable outcomes / total outcomes, so it's 6/36 = 1/6