[請問] 威力彩的機率
我跟我朋友在討論威力彩的機率
第一種投注
第一區一組號碼,第二區八個號碼全包
第二種投注
第一組號碼隨機,第二區八個號碼不重複買
第一種投注的機率還蠻簡單算的,就是C(38,6)不用再乘第二區
但第二種投注的機率應該就更小,但要如何表示其八張的公式??
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04/21 13:00, , 1F
04/21 13:00, 1F
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04/21 13:01, 2F
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04/21 13:03, 3F
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04/21 13:08, 4F
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04/21 13:10, 6F
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04/21 13:10, 7F
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04/21 13:11, 8F
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04/21 13:12, 9F
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04/21 13:22, , 10F
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04/21 13:24, 11F
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04/21 14:18, 12F
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04/21 15:39, , 13F
04/21 15:39, 13F
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04/22 04:04, , 14F
04/22 04:04, 14F