Let two events Events A and B must also be independent Even

Let two events - Events A and B must also be independent Events A and B cannot be complements of each other Events A and B cannot be independent

Solution

1) wrong, they exclusive events may not be independent

2) wrong, for example if B = A^c then A and B are both exclusive and complement of each other

3) True, except if one event has zero probability.

4) wrong. not always the case.