{"id":16976,"date":"2018-02-11T12:19:10","date_gmt":"2018-02-11T20:19:10","guid":{"rendered":"https:\/\/www.kith.org\/jed\/?p=16976"},"modified":"2018-02-11T16:16:48","modified_gmt":"2018-02-12T00:16:48","slug":"february-has-8-minutes","status":"publish","type":"post","link":"https:\/\/www.kith.org\/jed\/2018\/02\/11\/february-has-8-minutes\/","title":{"rendered":"February has 8! minutes"},"content":{"rendered":"\r\n

It turns out that there are 8 factorial minutes in February. And that\u2019s not just a random coincidence; in fact, you can demonstrate that it\u2019s true without performing any multiplication at all, just some easy factoring.<\/p>\r\n

    \r\n
  1. February contains four weeks.<\/li>\r\n

  2. The number of minutes in four weeks can be expressed as:<\/p>\r\n

    4 weeks x 7 days\/week x 24 hours\/day x 60 minutes\/hour<\/p><\/li>\r\n

  3. Now factor 24 and 60, to get this:<\/p>\r\n

    4 weeks x 7 days\/week x (3 x 8) hours\/day x (2 x 5 x 6) minutes\/hour<\/p><\/li>\r\n

  4. Which is to say, removing the units that cancel out:<\/p>\r\n

    4 x 7 x 3 x 8 x 2 x 5 x 6 minutes<\/p><\/li>\r\n

  5. Or, reordering those numbers:<\/p>\r\n

    8 x 7 x 6 x 5 x 4 x 3 x 2 (x 1) minutes<\/p><\/li>\r\n

  6. Which is 8 factorial.<\/li>\r\n<\/ol>\r\n

    (Credit: someone posted this at work the other day, but I got the impression they had heard it somewhere else.)<\/p>\r\n

    Edited to add: This doesn\u2019t apply to leap-year Februaries.<\/p>\r\n\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[124,74],"tags":[],"class_list":["post-16976","post","type-post","status-publish","format-standard","hentry","category-math","category-time"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.kith.org\/jed\/wp-json\/wp\/v2\/posts\/16976","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kith.org\/jed\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kith.org\/jed\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kith.org\/jed\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kith.org\/jed\/wp-json\/wp\/v2\/comments?post=16976"}],"version-history":[{"count":3,"href":"https:\/\/www.kith.org\/jed\/wp-json\/wp\/v2\/posts\/16976\/revisions"}],"predecessor-version":[{"id":16990,"href":"https:\/\/www.kith.org\/jed\/wp-json\/wp\/v2\/posts\/16976\/revisions\/16990"}],"wp:attachment":[{"href":"https:\/\/www.kith.org\/jed\/wp-json\/wp\/v2\/media?parent=16976"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kith.org\/jed\/wp-json\/wp\/v2\/categories?post=16976"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kith.org\/jed\/wp-json\/wp\/v2\/tags?post=16976"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}