If $P(A' \cap B) = 0.45$ and $A \cap B = \phi$, find $P(B)$.
If P(A)=P(B)=KP(A) = P(B) = KP(A)=P(B)=K for two mutually exclusive events AAA and BBB, find P(A∪B)P(A \cup B)P(A∪B).
