It doesn't work for girls. (because they can't add up :mrgreen: )
It breaks down as being basically multiplying the number you thought of (say 33) by 100 and thereby adding two noughts 3300
Then just adding your age (this year minus your date of birth) so 3300 + 23 = 3323
No magic really!
(you could probably disguise it a bit better by adding [one] to the original number and then taking it away from the final number)
-aqls-