#ed_op#br#ed_cl#0+1+2+3=6#ed_op#br#ed_cl#COOKIE 寫到:#ed_op#div#ed_cl#有A.B.C.D四個錢袋中各有許多相同的錢幣,已知真幣每個重10克,假幣每個重9克#ed_op#/div#ed_cl##ed_op#div#ed_cl#請問如何使用磅稱取最少的錢幣秤一次後說出每個錢袋中的錢幣是真是假#ed_op#/div#ed_cl##ed_op#div#ed_cl##ed_op#/div#ed_cl##ed_op#div#ed_cl##ed_op#/div#ed_cl#