Two events which are mutually exclusive but not exhaustive.
When three coins are tossed the sample space is given by S={HHH,HHT,HTH,HTT,THH,THT,TTH,TTT}Two events which are mutually exclusive but not exhaustive can be A: getting exactly one head ⇒A={HTT,THT,TTH} B: getting exactly one tail ⇒B={HHT,HTH,THH} This is because A∩B=ϕ but A∪B =S