Answer
If the occurrence of one event has no effect on the probability of another event, the events are said to be independent events. For such events,
$ P\left( A\ \text{ and }\ B \right)=$ $ P\left( A \right)\cdot P\left( B \right)$.
Work Step by Step
We know that two events are independent events if the occurrence of either of them has no effect on the probability of the other;
$ P\left( A\ \text{ and }\ B \right)=P\left( A \right)\cdot P\left( B \right)$
