November 10, 2008 by compactorange
12. PEN I10 Show that for all primes ,
Here is the official solution file: pen12.pdf
You can also discuss the problems here!
Posted in PEN Solutions Archive | 6 Comments
It’s nice and useful to me. Thanks project PEN. I don’t know what PEN means. Can you explain it? Can i take part in your group?
I’m from Vietnam.
i will come back and visit your site regularly. Wish your page more and more perfect.
Thanks for your collection
It is really helpful to me
This is a very nice identity from a german math olympiad.
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