AnB?

[engwaqas]

hello, my name is waqas, a new member from Pakistan. Im a student of BSCS Karachi University. Im facing lot much problem in understanding Probability (Stats).

I want to ask a question that..
If we have A some quantity like 10 and B say 15 and if we have to find P(AUB) then how can we find AnB?

[matt grime]

probabilities apply to events not quantities like that.

i think you want

P(AuB)=P(A)+P(B)-P(AnB)