A magical webpage that knows the number in your mind!
How to play: Think of any number between 1 and 63. Now, look carefully at the 6 cards below. For every card that contains the number you thought of, click the "Yes" button on that card. Finally, press the button below to see the magic!
The number in your mind is...
0
Is that real magic? 😉 Try adding the first numbers of all selected cards, you will get the same result!