108
Let $A$ and $B$ be two events. If $P(A / B)=P(A)$, then $A$ is ........... of $B$.
Explanation
$$\begin{array}{lr} \because & P(A / B)=\frac{P(A \cap B)}{P(B)} \\ \Rightarrow & P(A)=\frac{P(A \cap B)}{P(B)} \\ \Rightarrow & P(A) \cdot P(B)=P(A \cap B) \end{array} $$ So, $A$ is independent of $B$.