The most important part is figuring out just what the question is asking.

Part A is asking you for the probability of getting two successes out of 13 trials.

Part B is asking you a series of conditional AND statements (13 of them).

Part C is asking you for the probability of getting at LEAST one success out of 13 trials. They give you a hint to use the compliment of this event, which means you only have to computer one probability, and subtract that from 0.

See what you come up with using the above hints.