The 21 card trick
The 21 Card Trick is a classic magic trick that is easy to learn and perform, but can still be very impressive to your audience. The trick works by using a mathematical principle to ensure that the spectator's chosen card always ends up in the same position in the deck.
1. Instructions Step by Step
2. Tips to peform the trick
To make the trick more believable, you can shuffle the cards before and after each step.
You can also have the spectator choose their card without you seeing it. To do this, have them turn over the card they chose and place it face down on the table. Then, have them shuffle the cards and place them back on top of the face down card.
To make the trick more entertaining, you can add some patter or jokes while you are performing it.
3. The Secret behind
The secret to the 21 Card Trick is that it uses a mathematical principle called the binary search algorithm. The binary search algorithm works by dividing a set of data in half and then comparing the target value to the middle value. If the target value is greater than the middle value, then the algorithm searches the upper half of the data set. If the target value is less than the middle value, then the algorithm searches the lower half of the data set.
In the case of the 21 Card Trick, the target value is the spectator's chosen card. The algorithm starts by dividing the deck of cards in half into three piles. If the spectator's card is in the middle pile, then the algorithm has found the card and the trick is over. If the spectator's card is not in the middle pile, then the algorithm searches the pile that the spectator chose their card from. This process is repeated until the algorithm finds the spectator's card.
With a little practice, you can learn to perform the 21 Card Trick quickly and smoothly. It is a great trick to learn if you are a beginner magician, and it is sure to impress your audience.
