@jakobr_

As Matt Parker recently pointed out, this is obvious when written in base 7

@mikoliism

Combinatorial proofs are so cool, I wish they were touched on more in discrete math classes

@BernardGreenberg

Why is this better than the straighforward demonstration of the sum of any geometic series?

@prakharsingh4763

My brain left the skull

@MrOkazak1

This can be generalized to (X-1)(X^0+X^1+X^2....+X^(N-1))=X^N. Most obvious in Base 2 and Base 10.

@BlackbodyEconomics

This has quickly become one of my favorite math chans of all time. This is a fascinating example :) Thank you!

@mrbutish

Nice finally a good explanation to creating fractals manually

@Vobacoach

Damn I am SO amazed by your grafik proofs and explanations!!! Huge Respects to you!

@mo2cubing

The formula also works for other numbers. For example, if you add all the powers of 2 up until you get to 2^(n-1) and multiply that by 1 then add 1, you get 2^n. I guess the formula could therefore be, where x represents the base number, and n represents the power:
(X-1)*(x^1+x^2+...+x^(n-2)+x^(n-1))+1=x^n

@noahgilbertson7530

I love this identity, because everyone secretly knows it from when they learnt how to add big numbers together

@anandmaurya8479

This is proof that sometimes things are better if not visualised

@jacksonstenger

Nice one, an interesting mix of combinatorial and geometric

@RetroGDGamer

If you didn't underatand it, here's an easier way:
1+10+100+1000=1111, right?
And multiply that by 9 and you have 9999. You still with me?
Add 1 and boom, 10000, which is the same as 10^4.

@حسينالقطري-ب8ص

Nice video as usual ❤

I am still waiting for a special video, explaining how you make these animations. It will be useful for many people. Please do it😊

@prakashlakhapate1598

This is true for any no

5(1+6)+1 = 36=6^2

Dhanyavad!!!

Prakash Lakhapate

@Supersmart-g8k

This is fascinating glad I can understand math 
Mathematics is beautiful

@happyvirus6590

Damn. Math really looks like this reality's magic system.

@MydniteMoonrabbit

No one pointing out that it looks like a snowflake

@greenGuy4969

Fun fact this works with every number but instead of multiplying by 6 you multiply by n-1

@Mari0Kid1234

It’s a beautiful fractal aswell