If P(A)=0.4P(A) = 0.4P(A)=0.4 and P(B)=0.5P(B) = 0.5P(B)=0.5 are independent, what is P(A∣A∪B)P(A | A \cup B)P(A∣A∪B)?
0.4 / 0.7
0.4 / 0.9
0.4 / 0.5
0.7 / 0.4