Chain rule of probabilityIt describes the likelihood of occurrence of two or more random variablesp(x,y)=p(x∣y)p(y)=p(y∣x)p(x)p(x,y) = p(x|y)p(y) = p(y|x)p(x)p(x,y)=p(x∣y)p(y)=p(y∣x)p(x)