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#
You only need 23 people to have more than a 50% chance that 2 of them will have the same birthday
(Borderline Schizo, Sat 25 Jun 2005, 3:49, archived)
# how does that work?
EDIT: actually, just read your profile. "First year maths student". Don't bother explaining it, I'll just believe you instead...
(I helped save b3ta! PMGT -Bacon., Sat 25 Jun 2005, 3:51, archived)
# S'truth
Not that one of those 23 will match yours, but that two of those 23 will have the same one.
(I helped save b3ta! Syncubus Yarr! Ye'll be walking Planck's Constant! [GMT-5], Sat 25 Jun 2005, 3:54, archived)
# Here is a simplish explanation I found:
mathforum.org/dr.math/faq/faq.birthdayprob.html
(Borderline Schizo, Sat 25 Jun 2005, 4:03, archived)