Question

if A= {1,7,2,9} Write all subsets

Answer 1

Dear here is your answer .........

{1} ,{7} ,{2},{9}

{1,7},{1,2} ,{1,9},{7,2},{7,9},{2,9}

{1,7,2},{7,2,9},{2,9,1},{9,7,1}

{1,7,2,9} ,phi