When three coins are tossed the sample space is given by,S={HHH,HHT,HTH,HTT,THH,THT,TTH,TTT}A={HHH}B={HHT,HTH,THH}C={TTT}D={HHH,HHT,HTH,HTT}A∩B=ϕA∩C=ϕA∩D={HHH}=ϕB∩C=ϕB∩D={HHT,HTH} =ϕC∩D=ϕ(i) Event A and B; event A and C; event B and C; and event C and D are all mutually exclusive.(ii) If an event has only one sample point of a sample space, it is called a simple event.Thus A and C are simple events.(iii) If an event has more than one sample point of a sample space it is called a compound event. Thus B and D are compound events