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

where

.

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