[질문] 투탑중학수학칠가2008(가장최근글로보기) 017쪽부터022쪽까지답만써주세요

{1}.{1.2},{1.3},{1.2.3} 8개 32개 4 2 (1){abceg}(2){cdef}(3){ce}(4){abcdefg} 3+1=3,4 52 3 43개 23 2 4 a,c,d,e (2,3)