!1+1

Greetings Herr Heureka,

When I saw this post, I thought a thousand people could look at this and will think this is a childish troll attempting to annoy with a 1+1 post and inadvertently typed an exclamation point (“!”) along with the one (1).

I also thought if Heureka sees this, he will solve the “Derangement!”  You didn’t disappoint!  ROFLMAO

The only reason I know what a Derangement is (outside of the psychological condition caused by a psychosis), is because of this:

http://web2.0calc.com/questions/what-does-the-meaan#r3

You are one of the reasons why this math forum is extraordinary!

Gruß Ginger

!1+1

$\begin{array}{|rcll|} \hline !1 &=& 1! \cdot \left( 1- \frac{1}{1!} \right) \\ &=& 1 \cdot \left( 1- 1 \right) \\ &=& 1 \cdot 0 \\ &=& 0 \\\\ !1+1 &=& 0 + 1 \\ &=& 1 \\ \hline \end{array}$