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https:\/\/www.chiefscientist.gov.au\/2011\/05\/the-birthday-problem<\/a> ","protected":false},"excerpt":{"rendered":"","protected":false},"author":17897162,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_geoff_meta_description_en":"With 23 people, a shared birthday has about a 50.7% probability because the group contains 253 possible pairs, far more comparisons than intuition notices.","_geoff_meta_description_zh":"\u4e00\u4e2a\u623f\u95f4\u768423\u4eba\u4e2d\u81f3\u5c11\u4e24\u4eba\u540c\u751f\u65e5\u7684\u6982\u7387\u7ea6\u4e3a50.7%\u3002\u53cd\u76f4\u89c9\u7684\u5173\u952e\u5728\u4e8e\u95ee\u9898\u6bd4\u8f83\u7684\u662f253\u5bf9\u4eba\uff0c\u800c\u4e0d\u662f\u53ea\u770b\u67d0\u4e2a\u4eba\u80fd\u5426\u9047\u5230\u540c\u751f\u65e5\u8005\u3002","_wpcom_ai_launchpad_first_post":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[787297218],"tags":[787297284,787297285,787297286,787297287],"class_list":["post-20864","post","type-post","status-publish","format-standard","hentry","category-daily-maths-physics-chemistry","tag-birthday-problem","tag-birthday-problem-zh","tag-probability","tag-probability-zh",""],"translatepress_titles":{"en_AU":"Why Does a Group of 23 Make a Shared Birthday More Likely Than Not?","zh_CN":"\u4e3a\u4ec0\u4e48\u53ea\u898123\u4e2a\u4eba\uff0c\u540c\u751f\u65e5\u7684\u6982\u7387\u5c31\u8d85\u8fc7\u4e00\u534a\uff1f"},"jetpack_publicize_connections":[],"jetpack_likes_enabled":false,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p1ar9H-5qw","jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/posts\/20864","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/users\/17897162"}],"replies":[{"embeddable":true,"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/comments?post=20864"}],"version-history":[{"count":0,"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/posts\/20864\/revisions"}],"wp:attachment":[{"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/media?parent=20864"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/categories?post=20864"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/tags?post=20864"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
https:\/\/www.amstat.org\/asa\/files\/pdfs\/stew\/HappyBirthdaytoTwo.pdf<\/a><\/p>\n