magic trick

When you shuffle a deck of cards chances are the order of cards you produced has never been produced before! Find out why and learn a card trick too!

Until you understand the basics of functions and algebra, the thought that a number can be predicted is a surprising one. And of course `magic' and `being surprised' are often the same thing. Rob Eastaway shows us how mathemagicians trade off the fact that you can usually predict precisely the outcome of doing something in mathematics, but only if you know the secret beforehand.