perplexus.info :: General : Friday the 13th

Friday the 13th (Posted on 2004-08-13)

Which day of the week (Sunday, Monday, etc.) is the probability largest to fall on the 13th of a random month, in a random year?

Or is this probability the same for each day of the week?

Submitted by SilverKnight

Rating: 3.5000 (4 votes)

Solution: (Hide)

Friday is slightly higher (at 688/4800).
http://www.dse.nl/~puzzle/arith/friday_13th_us.html

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
Solution	K Sengupta	2007-05-07 12:52:58
Solution belated	salil	2006-02-15 02:55:57
My Take	bob909	2004-09-07 05:02:50
re(2): solution and discussion	Charlie	2004-08-30 20:19:42
re: solution and discussion	Elisabeth	2004-08-30 12:35:40
re(2): Solution	Penny	2004-08-14 06:37:58
re(2): Solution	Penny	2004-08-13 14:13:37
re: Solution	Charlie	2004-08-13 14:10:15
Solution	Penny	2004-08-13 13:17:38
No Subject	Vishal Baghel	2004-08-13 10:29:06
re: umm...	Oskar	2004-08-13 09:57:05
solution and discussion	Charlie	2004-08-13 09:54:43
umm...	Sing4TheDay	2004-08-13 09:44:12

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