tag:blogger.com,1999:blog-3802979373213475425.post8533147030251542078..comments2024-03-17T20:25:54.267+05:30Comments on Critical Thinking Puzzles: Birthday Probability ProblemAnonymoushttp://www.blogger.com/profile/05634752405801576739noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-3802979373213475425.post-89463329227203399202014-03-15T17:01:53.607+05:302014-03-15T17:01:53.607+05:30100%
100%<br /><br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3802979373213475425.post-5066106169680513392010-01-06T05:34:08.212+05:302010-01-06T05:34:08.212+05:30@Secret Squirrel - You are correct. I didn't ...@Secret Squirrel - You are correct. I didn't multiply the individual probabilities prior to taking the 1-product.<br /><br />Great brain teaser!Unknownhttps://www.blogger.com/profile/04005156180345480368noreply@blogger.comtag:blogger.com,1999:blog-3802979373213475425.post-4308860095166507812010-01-05T20:53:49.129+05:302010-01-05T20:53:49.129+05:30@Damien - in that case I'll bet you $100 that ...@Damien - in that case I'll bet you $100 that in a random sample of 50 people, at least 2 of them will share a birthday. Since you think the chances of that being the case are less than 15%, you'd take the bet right?<br /><br />I did say it was surprisingly high!Secret Squïrrelnoreply@blogger.comtag:blogger.com,1999:blog-3802979373213475425.post-9777432967872731862010-01-05T16:01:19.246+05:302010-01-05T16:01:19.246+05:301- (365/365)*(364/365) ...... (316/365)
It would ...1- (365/365)*(364/365) ...... (316/365)<br /><br />It would come around 97%.......<br /><br />Its really High....Varunhttps://www.blogger.com/profile/02099093716808643603noreply@blogger.comtag:blogger.com,1999:blog-3802979373213475425.post-30896916866340135112010-01-05T03:21:51.144+05:302010-01-05T03:21:51.144+05:3013.39%
The possibility of 50 people having 50 dif...13.39%<br /><br />The possibility of 50 people having 50 different birthdays is 317/366 or 86.61%. <br /><br />The possibility of 2 out of 50 sharing a birthday is (1-.8661) or 13.39%Unknownhttps://www.blogger.com/profile/04005156180345480368noreply@blogger.comtag:blogger.com,1999:blog-3802979373213475425.post-55472449536623337322010-01-03T17:37:46.599+05:302010-01-03T17:37:46.599+05:30Surprisingly high - nearly 97.5%. It's a good ...Surprisingly high - nearly 97.5%. It's a good party trick. If you have 30 or more people you can bet someone that there are at least 2 people with the same birthday and you'll win nearly 3 out of 4 times.Secret Squïrrelnoreply@blogger.com