Answer
A={HHH,HHT,HTH,THH,HTT,THT,TTH,TTT}
B={HHH,HHT,HTT,TTT}
Work Step by Step
List the outcomes of tossing three distinguishable coins, these will be the elements of the set
A={HHH,HHT,HTH,THH,HTT,THT,TTH,TTT}
List the outcomes of tossing three INdistinguishable coins, these will be the elements of the set
B={HHH,HHT,HTT,TTT}