The basic, and rather well-known, method is to ask a spectator to say a number between 1 and 10, with the intention of using it for a magical effect. In theory, the spectator is more likely to say the number seven. In theory...  Markobi, shares with you the keys to success... 

The basic, rather well-known method involves asking a spectator to say a number between 1 and 10, with the aim of using it for a magical effect. In theory, the spectator is more likely to say the number seven. In theory... Markobi, shares with you the keys to success...