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問我問題 - 生日悖论 | Penana
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問我問題
ENTRY #239
Author: 風離翼
Published:
Jan 9, 2018
問我問題
Published:
Jan 9, 2018
ENTRY #239
生日悖论
Author: 風離翼
Published:
Jan 9, 2018
1 Min Read
138 Words
No Plagiarism!8CR6aGM9pfCazP9aRm6Uposted on PＥNAＮＡ

概述：随机挑选一组人，其中就会有两人同一天生日。

用抽屉原理来计算，只要人群样本达到367，存在两人同天生日的可能性就能达到100%（一年虽然只有365天，但是有366个生日，包括2月29日）。然而，如果只是达到99%的概率，只需要57个人；达到50%只需要23个人。这种结论的前提是一年中每天生日的概率相等，可怜的2月29日除外。

求解釋和算式。

216.73.216.250

ns216.73.216.250da2
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