It seems like part of your question might be missing. You mentioned that two events are independent, but the specific probabilities or expressions for the events weren't provided.

Could you clarify what the events are and the given probabilities? For example, if the events are $A$ and $B$, you could provide something like:

• $P(A)$
• $P(B)$

Once you provide those details, I can help you find the desired probabilities and solve parts (a) and (b).