tag:blogger.com,1999:blog-2926158780993223009.post2190171455299864778..comments2014-09-30T19:36:28.317-07:00Comments on Natatomic: 7 Quick Takes Friday (Vol. 1)natatomichttp://www.blogger.com/profile/06989002471880541147noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-2926158780993223009.post-45033656647814906712009-12-08T11:16:40.079-08:002009-12-08T11:16:40.079-08:00Hmph. Thanks for ruining my fantasy where my birth...Hmph. Thanks for ruining my fantasy where my birthday is some special, magical day that only I was born on, which would somehow play an important role in me becoming some sort of super hero due to my uniqueness and currently-dormant, soon-to-be-unlocked magic powers.<br /><br />How cruel of you to use math against me!natatomichttps://www.blogger.com/profile/06989002471880541147noreply@blogger.comtag:blogger.com,1999:blog-2926158780993223009.post-41984246859412777532009-12-07T20:48:09.784-08:002009-12-07T20:48:09.784-08:00> I have asked HUNDREDS of children when their ...> I have asked HUNDREDS of children when their birthdays are. Maybe even a thousand. So, just take a guess at how many of those children have had the same birthday as me.<br /><br />The chance of not a single kid sharing the same birthday as you, where N is the number of children, is<br /><br />1 - (( 364 / 365 ) ^ N)<br /><br />For 200 kids you've got a 42% chance of having found your match.<br /><br />For 400 kids you've got a 67% chance of having found your match.<br /><br />For 800 kids you've got a 89% chance of having found your match.<br /><br />For 1600 kids you've got a 99% chance of having found your match.<br /><br /><br />So, if you've seen 800 kids, it's unlikely, but not totally bizarre, that you haven't yet matched your birthday.<br /><br />There, how's that for nerdy?TJIChttp://tjic.comnoreply@blogger.com