Normally, magic tricks are all about skewed perception and slight of hand. When a magician is performing a guessing trick in front of you, you can try to follow his movements or chain of commands to figure out how he’s doing it. But how do guessing tricks translate to the world of YouTube magic? Well, Math Magician Rick Lax wants to show you. First, the magician asks a series of seemingly innocuous and simple questions, all of them math problems. Then, he says he can guess the number in your head. You might not believe it but…well, just watch the video below to find out how good Rick Lax is at his job.