Age/Date of Birth

B. · 01-20-2011, 12:06 PM

Hello all, does anyone know the name for this little trick I learned of today?

If you take the last 2 digits from the year you were born and add them to the age you will be on your birthday in 2011, the answer is 111.

It seems to work for every age/year combo, and just increases by 1 every year, so last year the answer was 110 and next year 112 etc.

Example, my year of birth is 1980 and I'll be 31 sooner than I'd like, so 80 + 31 = 111

79 + 32 = 111

58 + 53 = 111

30 + 81 = 111

...and so on.

Cool little fact to impress your mates with, but what is it's name... it must have a name... anyone?

Google was not too helpful/my search terms were rubbish.

**SageTree** · 01-20-2011, 12:13 PM

"The Summing up your life" equation?

AND... it's a pun... soooon!!!!

Flamingnun · 01-20-2011, 01:08 PM

Quote:

Originally Posted by B.

Cool little fact to impress your mates with, but what is it's name.

Maths.

If a= the first digit in the last two digits of your year of birth multiplied by 10.

and,

b=the second digit in the last two digits of your year of birth.

We can say that

x=a+b+(2011-(1900+a+b))

In which,

1900+a+b is the year you where born

and therefore,

(2011-(1900+a+b) is the age you will be this year.

Rearranging the above equation gives,

x=a+b+2011-1900-a-b

a & b cancel themselves out in that equation so no matter what the value of a & b the answer will always be 111.

The Rev · 01-20-2011, 01:17 PM

P=wnd²

The Rev

msicidron · 01-20-2011, 02:06 PM

haha^

good explanation algebro

B. · 01-20-2011, 02:09 PM

Nice

I do understand the maths behind it, just someone was going on about it before and it's something I had never noticed, I thought it'd be a well known brain teaser type thingy with a particular name.

I suppose maths will do, that is a well known brain teaser type thingy with a particular name after all.

01-20-2011, 12:06 PM	#1 (permalink)
B. Drexciyan Join Date: Jun 2003 Posts: 782 Thanks: 23 Thanked 97 Times in 73 Posts	Age/Date of Birth Hello all, does anyone know the name for this little trick I learned of today? If you take the last 2 digits from the year you were born and add them to the age you will be on your birthday in 2011, the answer is 111. It seems to work for every age/year combo, and just increases by 1 every year, so last year the answer was 110 and next year 112 etc. Example, my year of birth is 1980 and I'll be 31 sooner than I'd like, so 80 + 31 = 111 79 + 32 = 111 58 + 53 = 111 30 + 81 = 111 ...and so on. Cool little fact to impress your mates with, but what is it's name... it must have a name... anyone? Google was not too helpful/my search terms were rubbish. __________________ The Lizard-Man makes his living as a freak... Sound Cloud photos

01-20-2011, 12:13 PM	#2 (permalink)
SageTree ~Kalyāṇa-mitrā~ Join Date: Sep 2000 Location: In Love Posts: 23,414 Blog Entries: 26 Thanks: 13,070 Thanked 6,768 Times in 4,664 Posts	"The Summing up your life" equation? AND... it's a pun... soooon!!!! __________________ "What's oppressive is letting your life be confined by old definitions of what everything is." -Zen Meister my_scatterheart YaHooka is.... Cannabis lovers from around the world pulling up a comfy chair, picking up a vaporizer, a bong, a brownie, a pipe, or a joint, getting high, stoned, buzzed or healthy. Uniting our minds in conversation...While Portraying a Positive Image of marijuana and marijuana users to the world. Treat your fellow YaHookans with kindness,respect and tolerance.

01-20-2011, 01:17 PM	#4 (permalink)
The Rev Clear Light Join Date: Oct 2002 Location: In my head, somewhere. Posts: 17,865 Thanks: 5,018 Thanked 5,420 Times in 2,865 Posts	P=wnd² The Rev __________________ Budforce - My Friend August 29, 1973- May 25, 2012

01-20-2011, 02:06 PM	#5 (permalink)
msicidron vibing Join Date: May 2007 Location: North America Posts: 959 Thanks: 229 Thanked 157 Times in 122 Posts	haha^ good explanation algebro __________________ \|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|\|

01-20-2011, 02:09 PM	#6 (permalink)
B. Drexciyan Join Date: Jun 2003 Posts: 782 Thanks: 23 Thanked 97 Times in 73 Posts	Nice I do understand the maths behind it, just someone was going on about it before and it's something I had never noticed, I thought it'd be a well known brain teaser type thingy with a particular name. I suppose maths will do, that is a well known brain teaser type thingy with a particular name after all. __________________ The Lizard-Man makes his living as a freak... Sound Cloud photos

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