Question

Scrieti toate submultime le lui A={a, b, c, d} ​

Answer 1

Răspuns:

A={(a),(b),(c),(d),(a;b),(a;c),(a;d),(b;c),(b;d),(c;d),(a;b;c),(b;c;d),(a;c;d),(a;b;d),(a;b;c;d), multimea vida}