6: a production facility employs 18 workers on the day shift, 11 workers on the swing shift, and 10 workers on the
graveyard shift. a quality control consultant is to randomly select 7 of these workers for in-depth interviews.
(a) what is the probability that all 7. selected workers will be from the same shift?
(b) what is the probability that at least two different shifts will be represented among the selected workers?
(c) what is the probability that exactly 3 of the workers in the sample come from the day shift?

can some me with part c plzzz