Question

Calculati numarul submultimilor pentru urmatoarele multimi:
a) A={100,101,102,103}
b) B={a,b,c,d,f}
c) C={0,1,2,3,4,5}

Answer 1

A are 4 submultimi cand fiecare are 1 element, 4 cand are cate doua, 3 cand are cate 3 elemente, total 11 submultimi
 
B are 5 cand se pune cate unul, 10 cand are cate 2, 5 cand se iau cate trei si 5 cand se iau cate 4, total 25 submultimi

C are  6 cate unul, 15 cate doua, 5 cand se iau cate 5, 5 cate 3 si 5 cate 4, total 41