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Other names:  birthday paradox

Attachments:
approximating the birthday problem (Derivation) by Algeboy
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Cross-references: numerator, factorial, represents, binomial coefficient, denominator, expression, order, number, matching, complement, group, event
There are 2 references to this entry.

This is version 13 of birthday problem, born on 2006-08-11, modified 2007-11-18.
Object id is 8242, canonical name is BirthdayProblem.
Accessed 5928 times total.

Classification:
AMS MSC60-00 (Probability theory and stochastic processes :: General reference works )
 05A10 (Combinatorics :: Enumerative combinatorics :: Factorials, binomial coefficients, combinatorial functions)
 60C05 (Probability theory and stochastic processes :: Combinatorial probability)

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Discussion
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How many needed by pahio on 2006-08-12 05:51:23
How many people are needed in a group for that it were more probable that at least two have the same birthday than that all have distinct birthdays?
Jussi
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