P(A∪B) = P(A) + P(B)
P(A∩B) = P(A) ∙ P(B)
\(\style{font-family:'Times New Roman'}{P(A\cap B)\;=\;P(A)\;\bullet\;P(A\vert B)}\)
\(\style{font-family:'Times New Roman'}{P(B\vert A)=P(A\vert B)\;}\)