Computing Machines

So still I haven't got a job anymore I am spending my weekends catching up on the workshop classes and I am trying to do Computing Machines which is the crazyness amount of maths I have seen in a while, this is what I am having to create:

I finding it alot better than alogrithms that I did last term but still it makes my head hurt, my notebook is fullof little circles trying to figure out these last two questions:

8. The language of all strings consisting of the symbols 0 and 1 such that
the string contains an even number of occurrences of the symbol 1.
9. The language of all strings consisting of the symbols 0 and 1 such
that when the string is interpreted as a binary number it is exactly
divisible by 3.

Maybe I'll get it working soon but after this I have to get some programming done as I have some workshop work to do...

It's all uni work today, fingers crossed I understand some more this term..