Question

Determine todos os subconjuntos de X={a,b,c,d} de exatamente

Answer 1

{ } ,{a} ,{b}, {c}, {d}, {ab}, {ac}, {ad}, {bc}, {bd},{cd}, {a,b,c},{a,c,d} {a,b,d}, {b,c,d} e  {a,b,c,d}