First, we need to find out which combinations lead to the required result. A table helps.
|
G1 |
G2 |
G3 |
G4 |
G5 |
G6 |
R1 |
1 |
|
|
|
|
|
R2 |
2 |
1 |
|
|
|
|
R3 |
3 |
|
1 |
|
|
|
R4 |
4 |
2 |
|
1 |
|
|
R5 |
5 |
|
|
|
1 |
|
R6 |
6 |
3 |
2 |
|
|
1 |
The filled cells are the only whole number quotients and there are 14 of them, so the probability is 14/36=7/18.