已知3张牌型K 8 9求后面两未知张牌。配出牛牛,牛1到牛9,无牛概率
答案:4 悬赏:20
解决时间 2021-02-16 22:03
- 提问者网友:姑娘长的好罪过
- 2021-02-16 15:38
已知3张牌型K 8 9求后面两未知张牌。配出牛牛,牛1到牛9,无牛概率
最佳答案
- 二级知识专家网友:拾荒鲤
- 2021-02-16 16:40
牛牛:
8/49*4/48+4/49*15/48*2=19/294
牛1:
15/49*4/48*2+8/49*4/48+4/49*3/48=41/258
牛2:
15/49*4/48*2+16/49*4/48=23/294
牛3:
15/49*4/48*2+16/49*4/48+4/49*3/48=49/588
牛4:
15/49*4/48*2+24/49*4/48=27/294
牛5:
15/49*3/48+24/49*4/48+15/49*4/48=201/2352
牛6:
15/49*3/48+16/49*4/48+4/49*3/48*2+15/49*4/48=193/2352
牛7:
15/49*14/48+8/49*4/48+8/49*3/48*2=145/1176
牛8:
15/49*4/48+8/49*3/48*2+15/49*3/48=153/2352
牛9:
15/49*4/48+4/49*3/48*3+15/49*3/48=141/2352
无牛:
22/49*21/48=33/168
8/49*4/48+4/49*15/48*2=19/294
牛1:
15/49*4/48*2+8/49*4/48+4/49*3/48=41/258
牛2:
15/49*4/48*2+16/49*4/48=23/294
牛3:
15/49*4/48*2+16/49*4/48+4/49*3/48=49/588
牛4:
15/49*4/48*2+24/49*4/48=27/294
牛5:
15/49*3/48+24/49*4/48+15/49*4/48=201/2352
牛6:
15/49*3/48+16/49*4/48+4/49*3/48*2+15/49*4/48=193/2352
牛7:
15/49*14/48+8/49*4/48+8/49*3/48*2=145/1176
牛8:
15/49*4/48+8/49*3/48*2+15/49*3/48=153/2352
牛9:
15/49*4/48+4/49*3/48*3+15/49*3/48=141/2352
无牛:
22/49*21/48=33/168
全部回答
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