Mutually exclusive events are those which are disjoint ….means A intersention B = 0 .
exhaustive events are those which cover the whole sample space ..like if there are 4 event A,B,C,D then P(A) + P(B)+ P(C)+ P(D) = 1 .
Mutually exculsive and exhaustive means that the events are disjoint i.e they donot overlap and the probablity of all those event is equal to 1 .