Let A, B, and C be three events. For each event described below, draw a three-set Venn diagram with shading that represents the event and under it write an expression that describes the event using...

Let A, B, and C be three events. For each event described below, draw a three-set Venn diagram with
shading that represents the event and under it write an expression that describes the event using only
the sets A, B, and C and the operators ∩, ∪, and ′(complement):
(a) C or A occurs. B may or may not occur.
(b) A occurs but B does not occur. C may or may not occur.
(c) none of the events occur
(d) the three events do not occur together.