[中學] 排組證明題
http://m.imgur.com/KJIU4is
--
Sent from my Android
--
※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 123.194.229.234
※ 文章網址: https://www.ptt.cc/bbs/Math/M.1443588401.A.32F.html
推
09/30 13:08, , 1F
09/30 13:08, 1F
→
09/30 22:57, , 2F
09/30 22:57, 2F
→
09/30 22:57, , 3F
09/30 22:57, 3F
→
10/02 02:48, , 4F
10/02 02:48, 4F
→
10/02 05:38, , 5F
10/02 05:38, 5F