If two events $A$ and $B$ in a sample space are independent then state the formula for $P(A \cup B)$.
For two events AAA and BBB in a sample space, A∩B=ϕA \cap B = \phiA∩B=ϕ and A∪B=UA \cup B = UA∪B=U. State the values of P(A∩B)P(A \cap B)P(A∩B) and P(A∪B)P(A \cup B)P(A∪B).