Continuation of Exercise 2-63. Suppose three castings are selected at random, without replacement, from the lot of

Question:

Continuation of Exercise 2-63. Suppose three castings are selected at random, without replacement, from the lot of 40. In addition to the definitions of events A and B, let C denote the event that the third casting selected is from the local supplier. Determine:
(a) P (A ∩ B ∩ C)
(b) P (A ∩ B ∩ C’)