Question

Given: If P(AnB) / P(B) = P(A|B)
then P(AuB) / P(A) or P(AuB) / P(B) = ?

Answer 1

all i remember is \[P(A \cup B)=P(A)+P(B)-P(A (INTERSECTION )B)\]

Answer 2

so, while using the above formula, i got,
P(A∪B)=P(A)+P(B)[1−P(A/B)]

Answer 3

dividing by P(A)
P(A∪B)/P(A)=1+[P(B)/P(A)][1−P(A/B)]

Answer 4

plse tell me is it correct and is this answer

Answer 5

@nitz