Amazing ....

Now this one is really tricky -

http://www.milaadesign.com/wizardy.html

click it... will not disappoint... and then click on start and after that on next...

at the last screen you will need to wait for a little while until the symbol is revealed.

Scroll down for the answer





















No matter what 2 digit number you pick, subtracting the sum of the digits from the original will give you a multiple of 9. If you look at the symbols, all the multiples of 9 are the same (though they change each time you refresh). Ingenious.