[解題] 高一數學 條件機率
1.年級：高一下學期
2.科目：數學
3.章節：條件機率
4.題目：賭神自整副撲克牌(52張)中任取5張，已知其中
4張是紅心，則賭神瞇牌瞇到同花的機率？(即另
外一張也是紅心的機率？放心絕對不是100%)
5.想法：已知有4張紅心，所以剩下的48張牌中還含有9張紅心，
因此第5張也是紅心的機率為 9/48 = 3/16
這是學校考卷的題目，解答上為3/68，自己的想法如上，
算的跟解答不一樣，不知是否想法有錯？還是是解答錯了？
請教版上朋友，謝謝。
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 123.205.28.71
推
06/13 18:04, , 1F
06/13 18:04, 1F
→
06/13 18:04, , 2F
06/13 18:04, 2F
推
06/14 00:00, , 3F
06/14 00:00, 3F
→
06/14 00:01, , 4F
06/14 00:01, 4F
推
06/14 00:07, , 5F
06/14 00:07, 5F
推
06/14 00:13, , 6F
06/14 00:13, 6F
→
06/14 00:13, , 7F
06/14 00:13, 7F
→
06/14 00:16, , 8F
06/14 00:16, 8F
推
06/14 00:46, , 9F
06/14 00:46, 9F
推
06/15 02:41, , 10F
06/15 02:41, 10F
→
06/15 02:41, , 11F
06/15 02:41, 11F
推
06/15 02:43, , 12F
06/15 02:43, 12F
討論串 (同標題文章)