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Response to MarkCharles (Original post)

Mon Feb 20, 2012, 04:37 PM

1. Usually called the birthday problem.

Using 23 children in the same class you calculate the probability of none have the same birthday and then subtract that from 1.

See here for example : http://en.wikipedia.org/wiki/Birthday_problem

This looks a lot simpler to understand : http://www.agenarisk.com/resources/probability_puzzles/birthdays.shtml

From memory I first discovered this in one of Martin Gardner's articles back in the late sixties / early seventies. Either that or a book on reasonably basic probability.

Good idea of yours to post - gets the old grey cells working.

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MarkCharles Feb 2012 OP
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dipsydoodle Feb 2012 #1
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dipsydoodle Feb 2012 #4
MarkCharles Feb 2012 #6
MarkCharles Feb 2012 #3
dipsydoodle Feb 2012 #5
MarkCharles Feb 2012 #7
TheMadMonk Feb 2012 #8
MarkCharles Feb 2012 #10
TheMadMonk Feb 2012 #11
MarkCharles Feb 2012 #12
Scuba Feb 2012 #9
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