[질문] 집합{1,2,3,4}의부분집합

부분집합의개수는2^4승이므로16이고,부분집합=공집합,{1},{2},{3},{4},{1,2},{1,3},{1,4},{2.3},{2.4},{3,4},{1,2,3},{1,3,4},{1,2,4},{2,3,4},{1,2,3,4}입니다