In developing their warranty policy, an automobile company estimates that over a 1-year period 17% of their

Question:

In developing their warranty policy, an automobile company estimates that over a 1-year period 17% of their new cars will need to be repaired once, 7% will need repairs twice, and 4% will require three or more repairs. If you buy a new car from them, what is the probability that your car will need:
a) No repairs?
b) No more than one repair?
c) Some repairs?