Question: a. If P(A or B) = 1/3, P(B) = 1/4, and P(A and B) = 1/5, find P(A). b. If P{A) = 0.4 and P(B)

a. If P(A or B) = 1/3, P(B) = 1/4, and P(A and B) = 1/5, find P(A).
b. If P{A) = 0.4 and P(B) = 0.5, what is known about P(A or B) if A and B are mutually exclusive events?
c. If P(A) = 0.4 and P(B) = 0.5, what is known about P(A or B) if A and B are not mutually exclusive events?

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