2 is easier
The E(X) is just the product of the x values and the corresponding probabilities, so
where you can factor out a 10 to make the algebra bit easier.
In order to get your st deviation, you first obtain the variance of X.
I do that via the short cut formula, which is
As for 1, well I have trouble believing you want order.
It's just 36 choose 6 balls, i.e.
but that's without order.
If you want to count order it's