I'm looking at algorithms for determining coincidences. In educational
testing, it is interesting to look at cheating via the birthday problem
where I can assess the probability of n students having the same test
score in a class of size k.

I was writing my own code for the b-day problem until I ran into the
qbirthday() function, which has solutions for the overflow problems I
kept running into. There is no "see also" part of this man page which
would reference me to other functions which may prove useful for such
problems. But, that doesn't mean they don't exist. 

I am just not familiar enough with this branch of mathematics to know
exactly what else I might look for. Does anyone know of any other R
functions that may be useful for me to look at in thinking about this
kind of problem? 

Harold

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