This 111 thing is driving me round the bend

[theothermarg]

Read in the Mail letters, if you add the last 2 numbers of a persons year of birth and the age they will be this year it comes to 111  :o and it does :o but how? I'v done it to everyone I can think of, it's driving me crazy.
and yes I know I have too much time on my hands at the mo ;D
marg

[theothermarg]

[Morris]

I thought it didn't work for my daughter until I remembered how old she actually is going to be this year!! ;D ;D ;D
So, what's the mathematical explanation someone clever out there? ???

[theothermarg]

I thought it didn't work for my daughter until I remembered how old she actually is going to be this year!! ;D ;D ;D
So, what's the mathematical explanation someone clever out there? ???

so now it's driving you crazy yes? ;D
marg

[Morris]

It does seem very strange ;D

[timnsal]

It only works for people born after 1899 and before 2000 :D

Next year, the same trick will give the answer 112. Last year it would have been 110.

If you add a person's age this year to the year in which they were born, you get the current year, ie 2011.
If you just take the last 2 digits of the year they were born, you are removing 1900.
So 82 instead of 1982, 54 instead of 1954 and so on.
Take 1900 away from 2011 and you get 111.

If you were born in 1899, the answer would be 211. For anyone born this century, the answer is 11

[Poppy Mole]

So who was the idiot person who thought it up to start with?

[jimtheworzel]

It only works for people born after 1899 and before 2000 :D

Next year, the same trick will give the answer 112. Last year it would have been 110.

If you add a person's age this year to the year in which they were born, you get the current year, ie 2011.
If you just take the last 2 digits of the year they were born, you are removing 1900.
So 82 instead of 1982, 54 instead of 1954 and so on.
Take 1900 away from 2011 and you get 111.

If you were born in 1899, the answer would be 211. For anyone born this century, the answer is 11

its as clear as  mud !!

[Unwashed]

It's not that odd really.

Take the year you were born, add the number of years since then, and you get the current year.

It's 111 because you're counting years since 1900, and on that basis the current year 111 rather than 2011.

[timnsal]

its as clear as  mud !!

;D

I think you're looking for complications. There isn't a trick.
It's no different from working out someone's age from their date of birth

[Bugloss2009]

it;s a quirk of having a counting system based on units, tens, hundreds.......

[lewic]

Code Select Expand

I think you're looking for complications. There isn't a trick.
It's no different from working out someone's age from their date of birth

Deep voodoo to the average Daily Mail reader  ;)

(sorry Marg!)

[Joe11]

Deep voodoo to the average Daily Mail reader  ;)

Made me laugh lol  ;D Pretty kl at first though, I was lost aswell till peeps explained, maths is not my strong point

[theothermarg]

 :D :D we found for kids born 2000 and after it comes to 11
I don't usually buy newspapers and now I know why ;D ;D
marg

[landimad]

Tried it out on my lot and guess what?  ;D ;D ;D
All the same. :-[
Not one different and it goes for their grandad who was born in 1926.
Still going that's for sure, bends my ears and I am getting on a bit now.