Hello everyone,

I did like to give a brief overview of Fermat's theorem and its proof. There are various methods to prove Fermat's Little theorem, but I found the combinatorial approach to be the most straightforward and easy to understand. I'd like to discuss Fermat's theorem and its proof using combinatorics.

Fermat's Little Theorem:
States that given 2 integers a , p where a > 1 and p is a prime. It follows that $$$a^{p-1} = 1 mod p$$$

References:
Wikepedia