21 Card Trick (the one that everyone knows)

I think this is the right section, but this is how to do the 21 card trick, that I think that many non-magicians know, it is based on mathematics....I thought it was self working, although it does require a little work, please feel free to move this, just wanted to try help fill the section up.

Here is how to do it (well how I do it, there are quite a few variations, I think):

1. You set up 3 rows of 7 cards each, face up.
   
2. You have someone come up and think of one of the cards (not telling you what it is).
   
3. Ask which row of cards their card is in
   
4. Gather up the cards, but be sure to put the row they said INTO THE
   MIDDLE of the 3 piles. Lay the cards out again, like this. Deal three
   cards in a column, then the another three cards in a column next to the
   first. Deal the rest the same way, until you again have 3 rows of 7
   cards each. Ask again which row. Gather the cards and repeat for the
   third time. (Remember to put their row in the MIDDLE of the pile.) The
   3rd time, you know what card it is because when you ask them which row,
   it's the 4th card in that row.
   

I think that's right.


And here is quick vid I found, haven't watched it fully though, tell me how it is...


Amazing Easy Magic; Logical 21 Card Trick - Click here for the funniest movie of the week

I have the video of it. I mean I made a video. I dont know whether admin has put it here or not......:Lol: