The Magic Number Nine

The effect:
In this mental magic trick you will confuse the sceptics in your audience by correctly predicting the result of a very complex series of calculations and then revealing your prediction in an extremely unusual way.

Before you begin:
You will need a magazine, a piece of card, a pencil and a marker pen. You will also need to open the magazine at page number nine and write in bold letters using the marker pen, "I got here first" as this will be your prediction!

Here's how this mental magic trick is done:
1.Ask a member of the audience to think of a four digit number in which all of the digits are different. Tell them to write the number down but not to tell you what it is.(a below)
2. Get them to jumble up the four digits and write the new number below the first (b) if it is smaller or above the first number if it is larger.
3. Now ask them to subtract the smaller number from the larger number. (c) Next get them to add the digits of the total together (d) and if the total of this calculation is a two digit number then these two digits should be added together as well. They need to carry on like this until they are left with a single digit number.(e) Magically, this number will always be a 9!

As a demonstration of this magical calculation:
(a) 8253 (first number thought of)
(b) 3285 (orig. digits jumbled up)
(c) 8253 minus 3285 = 4968
(d) 4+9+6+8 = 27 so as this is 2 digit number add the two digits: 2+7
(e) =9

Obviously to complete this routine all you need to do is to give your spectator the magazine and ask them to open it at that page which corresponds with the number that they finished up with and which of course you couldn't possibly have known!!