I'll do my best to make this card trick as clear as possible...
A regular 52card deck is shuffled, then placed face down on table.
You turn over top card and place it face up on table;
say it's a 9: you turn over next card and "say" 10;
another for 11, another for 12, finally another for 13.
So you now have a stack of 5 cards: turn it over face down;
do not change the order of the cards!
Similarly, you create a 2nd stack; say it's a Jack;
then you go 11, another card for 12, another for 13;
so you now have a 2nd stack of 3 cards: turn it over face down;
do not change the order of the cards!
Similarly, you create a 3rd pile; say it's a 6;
then you go 6, another card for 7, and so on up to 13;
so you now have a 3rd stack of 8 cards: turn it over face down;
do not change the order of the cards!
OK; I'm the "magician!"; I've asked you to do the above
but left the room while you were setting up your 3 stacks.
Now you turn over your 3 stacks face down; the 3 top cards
will of course be the 9, the Jack and the 6 from above.
Now I come back and take the stack containing the leftover
cards: that would be 36 cards: 52 - 5 - 3 - 8 = 36. OK?
I count the cards in this stack, so I know there is 36 left.
I then tell you to turn over the top card of any 2 (your choice)
Say you turn over the 6 and the Jack:
I then say a few abracadabras and announce:
the top card in the leftover pile is a 9 !
HOW did I know?
acebook
witter
