[問題] 選擇性的問題(三門問題、車與羊)
看板puzzle (益智遊戲 - 數獨,拼圖,推理,西洋棋)作者whatai (多多)時間14年前 (2010/12/06 01:07)推噓15(15推 0噓 102→)留言117則, 12人參與討論串1/3 (看更多)
今天在網路上看到這問題
有一天你參加節目,主持人將一塊金塊藏在三扇門A.B.C中的其中一扇,
而其中兩扇是空的,並且叫你選擇一扇,你猜對了金塊就是你的。
假設你選了A門,此時主持人打開了C門說:「裡頭是空的」
並且給你一次選擇B門的機會。
請問!
你是換B門或是堅持A門的得獎機率較大?
這題答案似乎是b
可是為什麼呢?
換不換在機率上到底有什麼意義?
請問有人可以提供解答嗎?
解釋為什麼選b的贏的機率會變成66%
而不是各50%
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 114.24.92.88
推
12/06 01:18, , 1F
12/06 01:18, 1F
推
12/06 01:21, , 2F
12/06 01:21, 2F
→
12/06 02:08, , 3F
12/06 02:08, 3F
推
12/06 04:49, , 4F
12/06 04:49, 4F
→
12/06 06:19, , 5F
12/06 06:19, 5F
推
12/06 10:19, , 6F
12/06 10:19, 6F
→
12/06 10:20, , 7F
12/06 10:20, 7F
推
12/06 14:36, , 8F
12/06 14:36, 8F
→
12/06 14:36, , 9F
12/06 14:36, 9F
→
12/06 14:52, , 10F
12/06 14:52, 10F
→
12/06 14:53, , 11F
12/06 14:53, 11F
→
12/06 14:54, , 12F
12/06 14:54, 12F
→
12/06 14:55, , 13F
12/06 14:55, 13F
推
12/06 15:56, , 14F
12/06 15:56, 14F
推
12/06 16:05, , 15F
12/06 16:05, 15F
→
12/06 16:06, , 16F
12/06 16:06, 16F
→
12/06 16:09, , 17F
12/06 16:09, 17F
推
12/06 16:50, , 18F
12/06 16:50, 18F
→
12/06 16:50, , 19F
12/06 16:50, 19F
→
12/06 17:02, , 20F
12/06 17:02, 20F
→
12/06 17:03, , 21F
12/06 17:03, 21F
→
12/06 18:52, , 22F
12/06 18:52, 22F
→
12/06 18:52, , 23F
12/06 18:52, 23F
→
12/06 18:53, , 24F
12/06 18:53, 24F
→
12/06 18:53, , 25F
12/06 18:53, 25F
推
12/06 21:09, , 26F
12/06 21:09, 26F
推
12/06 21:13, , 27F
12/06 21:13, 27F
→
12/06 21:14, , 28F
12/06 21:14, 28F
→
12/06 21:31, , 29F
12/06 21:31, 29F
推
12/06 21:57, , 30F
12/06 21:57, 30F
→
12/06 21:58, , 31F
12/06 21:58, 31F
→
12/06 21:58, , 32F
12/06 21:58, 32F
推
12/06 23:32, , 33F
12/06 23:32, 33F
推
12/06 23:37, , 34F
12/06 23:37, 34F
→
12/07 07:25, , 35F
12/07 07:25, 35F
→
12/07 07:26, , 36F
12/07 07:26, 36F
→
12/07 07:27, , 37F
12/07 07:27, 37F
→
12/07 07:27, , 38F
12/07 07:27, 38F
→
12/07 07:28, , 39F
12/07 07:28, 39F
還有 38 則推文
→
12/08 12:37, , 78F
12/08 12:37, 78F
→
12/08 12:38, , 79F
12/08 12:38, 79F
→
12/08 12:39, , 80F
12/08 12:39, 80F
→
12/08 12:39, , 81F
12/08 12:39, 81F
→
12/08 12:39, , 82F
12/08 12:39, 82F
→
12/08 12:40, , 83F
12/08 12:40, 83F
→
12/08 12:40, , 84F
12/08 12:40, 84F
→
12/08 12:40, , 85F
12/08 12:40, 85F
→
12/08 12:41, , 86F
12/08 12:41, 86F
→
12/08 12:41, , 87F
12/08 12:41, 87F
→
12/08 12:42, , 88F
12/08 12:42, 88F
→
12/08 12:42, , 89F
12/08 12:42, 89F
→
12/08 12:42, , 90F
12/08 12:42, 90F
→
12/08 12:43, , 91F
12/08 12:43, 91F
→
12/08 12:43, , 92F
12/08 12:43, 92F
→
12/08 12:43, , 93F
12/08 12:43, 93F
→
12/08 12:44, , 94F
12/08 12:44, 94F
→
12/08 12:44, , 95F
12/08 12:44, 95F
→
12/08 12:44, , 96F
12/08 12:44, 96F
→
12/08 12:45, , 97F
12/08 12:45, 97F
→
12/08 12:45, , 98F
12/08 12:45, 98F
→
12/08 12:46, , 99F
12/08 12:46, 99F
→
12/08 12:47, , 100F
12/08 12:47, 100F
→
12/08 12:47, , 101F
12/08 12:47, 101F
→
12/08 12:48, , 102F
12/08 12:48, 102F
→
12/08 12:49, , 103F
12/08 12:49, 103F
→
12/08 12:49, , 104F
12/08 12:49, 104F
→
12/08 12:50, , 105F
12/08 12:50, 105F
→
12/08 12:50, , 106F
12/08 12:50, 106F
→
12/08 12:54, , 107F
12/08 12:54, 107F
→
12/08 12:55, , 108F
12/08 12:55, 108F
→
12/08 12:56, , 109F
12/08 12:56, 109F
→
12/08 12:57, , 110F
12/08 12:57, 110F
→
12/08 12:57, , 111F
12/08 12:57, 111F
→
12/08 12:57, , 112F
12/08 12:57, 112F
→
12/08 12:57, , 113F
12/08 12:57, 113F
→
12/08 12:58, , 114F
12/08 12:58, 114F
→
12/08 13:05, , 115F
12/08 13:05, 115F
→
12/08 13:05, , 116F
12/08 13:05, 116F
→
12/08 13:06, , 117F
12/08 13:06, 117F
討論串 (同標題文章)
完整討論串 (本文為第 1 之 3 篇):
15
117
puzzle 近期熱門文章
PTT遊戲區 即時熱門文章
16
31