Here’s how the card trick is done
Say: “To start this trick I’m going to make a prediction.”
On a piece of paper write down “YOU WILL SELECT A RED CARD“. Fold the paper and give to a spectator to keep safe until later.
Ask a spectator to choose a number from 1 to 10. The number they choose dictates your next move – as follows ….
If they choose 1, 2, 5, 6, 9 or 10 – you spell the number and tap a card from left to right for each letter as you do it.
(Numbers 1, 2, 6 and 10 have three letters each and take you to the third card in the line working from left to right. Numbers 5 and 9 have four letters each so take you to the fourth card in the line).
If they choose number 3 or 4 you count along the row from left to right.
If they choose number 7 or 8 you count along the row from right to left.