what us a way to understand the difference between mutually exclusive events and not mutually exclusive events?

Question

anonymous · Answer

If events A and B are mutually exclusive events they cannot occur at the same time

anonymous · Answer

as sets mutually exclusive means 
$$A\cap B=\emptyset$$

anonymous · Answer

ok thanks ..does it work for numbers?

anonymous · Answer

but langrangeson has better explanation

anonymous · Answer

no numbers are not sets.  in probability if the events are mutually exclusive it means 
$$P(A\cap B)=0$$

anonymous · Answer

what does the upside down U mean?

anonymous · Answer

it also means that 
$$P(A) \cup P(B)=P(A)+P(B)$$

anonymous · Answer

my definition works under the assumption that you were talking about stats

anonymous · Answer

upside down U means intersection. nothing is in common to both

anonymous · Answer

ok thanks

anonymous · Answer

yw