[問題] 數學問題已回收
Q: 3r在萬惡的慘券上連續貢辜,表一為3r買的張數與數量
┌──┬─────┬───────┐
│張數│買幾個號碼│ 成本 │
├──┼─────┼───────┤
│ 1 │ 4 │400 │
├──┼─────┼───────┤
│ 2 │ 4 │800 + 400 │
├──┼─────┼───────┤
│ 4 │ 4 │1600 + 1200 │
├──┼─────┼───────┤
│ 8 │ 4 │3200 + 2800 │
├──┼─────┼───────┤
│ 16 │ 4 │6400 + 6000 │
├──┼─────┼───────┤
│ 32 │ 4 │12800 + 12400 │
└──┴─────┴───────┘
表一. 3r虧損表
今天3r聽了丹尼的話買了 5 6 7 8 各5張,結果也是中了!
試問,3r下一次要壓多少張才能把虧損的補回來呢?
(我只知道不是64張......)
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04/02 23:00, , 1F
04/02 23:00, 1F
中了 3910 => 賺了1910
推
04/02 23:00, , 2F
04/02 23:00, 2F
痾... 我要怎ㄇ給期望值..
※ 編輯: rrr518 (114.45.165.15), 04/02/2017 23:01:41
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04/02 23:01, , 3F
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04/02 23:01, , 4F
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04/02 23:02, , 5F
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04/02 23:02, , 6F
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04/02 23:02, , 7F
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04/02 23:02, , 8F
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04/02 23:04, , 9F
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04/02 23:06, , 18F
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04/02 23:07, , 19F
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04/02 23:09, , 25F
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04/02 23:09, , 26F
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04/02 23:09, , 27F
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04/02 23:09, , 28F
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04/02 23:11, , 38F
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04/02 23:12, , 39F
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04/02 23:12, , 40F
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04/02 23:13, , 41F
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04/02 23:13, , 42F
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04/02 23:14, , 48F
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04/02 23:15, , 51F
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04/02 23:16, , 53F
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04/02 23:16, , 54F
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04/02 23:16, , 55F
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04/02 23:16, , 56F
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04/02 23:18, , 57F
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04/02 23:18, , 58F
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04/02 23:19, , 59F
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04/02 23:20, , 60F
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04/02 23:20, , 61F
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04/02 23:20, , 62F
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04/02 23:20, , 63F
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04/02 23:20, , 64F
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04/02 23:20, , 65F
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04/02 23:21, , 66F
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04/02 23:21, , 67F
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04/02 23:21, , 68F
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04/02 23:21, , 69F
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04/02 23:22, , 70F
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04/02 23:22, , 71F
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04/02 23:22, , 72F
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04/02 23:22, , 73F
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04/02 23:22, , 74F
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04/02 23:23, , 75F
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04/02 23:23, , 76F
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04/02 23:23, , 78F
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04/02 23:24, , 79F
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04/02 23:24, , 80F
04/02 23:24, 80F
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04/02 23:25, , 81F
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04/02 23:25, , 84F
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04/02 23:26, , 85F
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04/02 23:32, , 92F
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04/02 23:36, , 93F
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04/02 23:46, , 95F
04/02 23:46, 95F
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