Need some help with Statistics/Probability homework.

This is some really basic stuff, I'm sure. It's for a Calculus based probability course. I can't really see what's going on in class (I'm quite literally legally blind), and the instructor doesn't really have any online resources available.

The site (or my internet connection) is being goofy and won't let me upload the file. I'll have to link to it.

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I've drawn a probability tree and concluded that there is a 10% chance of a fair coin landing on heads three consecutive times for number 1.

After that problem, I'm clueless of where to go. I'm not even sure I'm right on it. Any resources for this type of problem would be greatly appreciated. Thank you.