Joke Collection Website - Talk about mood - For those who have studied probability theory, can you tell me whether P(AB)=P(A)+P(B) or P(AB)=P(A)*P(B)? Or something else.

For those who have studied probability theory, can you tell me whether P(AB)=P(A)+P(B) or P(AB)=P(A)*P(B)? Or something else.

1. At least one of any two events A and B occurs: P(A+B)=P(A)+P(B)-P(AB)

2 , The probability of mutually exclusive events (A and B cannot occur at the same time): P(A+B)=P(A)+P(B)

3. The probability of independent events A and B occurring at the same time: P(AB)=P(A)P(B)