Quote:5. If you have had your birthday in 2006, add 1756. If your birthday is still to come, add 1755.
Ok, that's wonderful, but if you use 1757 and 1756 it will work in 2007...oh my god!
It's because you just multiplied 5*50 = 250, and added that to 1755, and subtracted your age...and surprise surprise, currentyear - birthyear = age.
Anyway it won't work if you are 100 or older