Math is amazing self working trick using a borrowed deck
Imagine, You let spectator deal the deck into 2 piles , each pile has 26 cards.Now you show them a prediction. And let them chose 3 random cards in a pile. Spectator will fill the value of 3 card to number 10. And after filling, they add all the value of 3 cards , deal number of card pair with the total. After dealing, they will suppurise because the card they stop is the same as the prediction
