this is stupid, it works with every year of course the year you were born + age = 111 all you are doing is adding up to 100 then adding the year it currently is, every time a new century comes around it starts over. so if you were born in 2001 and it is the year 2100 you would be 99 add 01 and it is 100, nothing special about it. and that lady who was born in 18xx, of course it equals over 200, she was born in a different century.