find P(A intersection B) for each
p(A)=.25 p(b)=.32 and p(a U b)=.50
i think the formula has multiplying not sure tho
P (probability)
P of the compliment of A= .27 and P of the compliment of b=.19 and
the P(A U B) =.9
#1: Directly apply the formula:
$\displaystyle P(A \cup B) = P(A) + P(B) - P(A \cap B)$
$\displaystyle \Rightarrow P(A \cap B) = P(A) + P(B) - P(A \cup B)$
#2: $\displaystyle P(A \cap B) = P(A) + P(B) - P(A \cup B) = (1 - P(A')) + (1 - P(B')) - P(A \cup B)$