In Australia, 16% of the adult population is near-sighted. If three Australians are chosen at random, what

Question:

In Australia, 16% of the adult population is near-sighted. If three Australians are chosen at random, what is the probability that
(a) Two are nearsighted and one is not?
(b) Exactly one is nearsighted?
(c) At most one is nearsighted?
(d) None of them are nearsighted?