A={a,{b,c},1,2,{3},{4,5}} a kümesinin alt kümeleridir?

 

a){a},{b,c}    b){1,2},{{b,c}}     c){a,b,c},{1,3}      d){4,5},{3},{1}

 

e){a},{1,2},{{b,c}}           f){{4,5}},{a,1},{{b,c}}