When two dice are rolled there are 6 x 6 = 36 possible outcomes, all equally likely. However the information that at least one has come up six narrows down the number of possibilities to the 11 shown as crosses below.
1
2
3
4
5
6
1
x
2
x
3
x
4
x
5
x
6
x
x
x
x
x
x
Of these both dice show 6 in only one case, so the required probability is 1/11 ~ 9%.
Solution to Probability Question
This is the solution to the problem posted at https://learn1.open.ac.uk/mod/oublog/viewpost.php?post=279732
When two dice are rolled there are 6 x 6 = 36 possible outcomes, all equally likely. However the information that at least one has come up six narrows down the number of possibilities to the 11 shown as crosses below.
Of these both dice show 6 in only one case, so the required probability is 1/11 ~ 9%.