Wanna bet shuffling doesn't make a differencewhen the cards are stacked right?
Arrange a deck of cards so that the black and red cardsalternate. Cut the deck. Make sure the bottom cards are opposite colors. Shuffle the cards once. Deal cards from the top of the deck in pairs. In spiteof your shuffle, they will always be red/black pairs.
You can be a card shark if you use a littlemathemagic. What appears to be miraculous is really the result of a math law. It is called the Gilbreath Principle after the mathematician/magician who formulated it in 1958.
If you don’t see the math behind the magic, dothe trick with the cards face - side up. Stack your deck and cut it so one redand one black card face up. Imagine you are shuffling the deck. Put one carddown to represent the first card to hit the table in your shuffle. If it isblack, both halves of the deck will now have a red card up. It doesn’t matterwhich half of the deck supplies the next card. If you put a red on a red, thenthe next two cards will be black and your red/black pair combination will becontinued.