From: Richard L. Peterson on
I'm sure it's well known but still: Let p be
prime and C(n,k) be the usual binomial coefficient.
Then C(np,kp) is congruent to C(n,k) mod p.
From: Richard L. Peterson on
> I'm sure it's well known but still: Let p be
> prime and C(n,k) be the usual binomial coefficient.
> Then C(np,kp) is congruent to C(n,k) mod p.

This turns out to be a weakened statemant
of Wolstenholme's theorem, with "mod p"
where [mod p^3] could have been correctly
placed.