seanieg89
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- HSC
- 2007
Re: HSC 2013 4U Marathon
So average = average number of friends over all equally likely friendship arrangements. (there are 2^{nC2} of these)
The situation described is a probabilistic one, not a definite one. Friendship is not a certain relationship.How can one person have an average? Average number of friends per ... what?
So average = average number of friends over all equally likely friendship arrangements. (there are 2^{nC2} of these)