11th card - Simple self working card trick

This is a very easy card trick, it requires no set up, there is no need for fancy false cuts or tricky pinky/thumb breaks, so it is perfect for beginners. It works every time, just remember you need to start with 21 cards and their card is always the 11th card.

[TomGeek]

My dad thought me this trick when i was a kid but he used a whole deck. I went to Greece where we have a house and i did this trick for many kids in our village. They were freaking out thinking I could do some evil magic.

[BoscoMind]

cool trick! it's great because it doesn't take that much of the skill to perform and yet it's very impressive. very well done, and great explanation! :)

[bouj]

I do this trick but I still don’t understand the math behind it.
How does is it the card is always the 11th card?

[melbaliola]

How to know if the card is in the middle?

[chriscalderon]

I've been trying to figure this out for a while pick any card it always lands on the 11th card

[styleskeepemmad]

Let them take every card away and keep theirs last.