Interesting numbers game

[shalom]

There are 66 books in the Bible.

Subtract your age from 66, and add 50.

(If you're over 66 you'll get a negative number, so subtract it from 50.)

You will come up with the last two digits of the year you were born.  

This works for everyone.  

[Shoshanna]

Two things I've found - 

It only gives you the last two digits of the year you were born.  For someone born 2000 or later, there will be a "1" in front of the two digits.

You have to use the age you'll be at the end of the year (for those who haven't had a birthday yet this year.)