Proof that $6^n$ always has a last digit of $6$ Without being proficient in math at all, I have figured out, by looking at series of numbers, that $6$ in the $n$-th power always seems to end with the digit $6$.
Anyone here willing to link me to a proof?
I've been searching google, without luck, probably because I used the wrong keywords.

I also think that this is true, because $6\times 6=36$, meaning that any ending $6$ digit results in an ending $6$ digit through multiplication.
