How Old Are You?

dasdeck · 13 Nov 2005

I had my 23 birthday this oktober

sonicfire · 13 Nov 2005

twentyfive 😉

rl · 13 Nov 2005

0x2d. hi kids.

fritzman · 13 Nov 2005

rl wrote: 0x2d. hi kids.

Heh?

I'm 39. And I have 5 (nearly6) kids.

lalo · 13 Nov 2005

i'm ... i don't remember..... maybe 32...maybe 23 or 46 or 64.....something to do with binary numerical system i guess... but i really don't know

lowe

lalo

angstrom · 13 Nov 2005

100011

100100 pretty damn soon now.

my oh so stylish goatee is going grey to match my damn bald head. I look like an old guy. shit!

Shifrin · 13 Nov 2005

I am 27, soon to be 28 😉

Shif.

stefan · 13 Nov 2005

If we're gonna be all hexish.... 1B. Born 7BA-05-0D.

sambean · 13 Nov 2005

I was born 30B days before stefan 🙂

ambitechniques · 13 Nov 2005

I'am 23 hexadecimal years oooold 🙂 🙁 🙂 🙁 🙂

NothanUmber · 14 Nov 2005

Mary is 34 years and eight months old. She is twice as old as NothanUmber was, when she was as old as NothanUmber is now.

How old is NothanUmber? ;P

Ok, that riddle is quite old but nontheless entertaining... 🙂

Greetings, NothanUmber

Tom7777 · 14 Nov 2005

😕 ?????? 😀

GaryG · 14 Nov 2005

a lean, vigorous 25.

in hex.

37 in real money... 😮

.g

best t-shirt ever: "there are only 10 types of people in this world, those who understand binary and those who don't"

The Sound Scientist · 14 Nov 2005

Guess I'm going to jump on the bandwagon here too..... 😉 I'm 22 years old .. I thought I was the only young one around here 🙂! it's good to see how many different cultures and walks of life have all crossed paths within this creative intersection.... Peace and Science

The youth of today breathe life into tomorrow

oddson · 15 Nov 2005

XLII

2a

101010 (Hey, looks kinda cool in binary)

Half as old as I will be before I figure out how old NothaUmber was when he posted his riddle.

Hi kids, and rl! 😉

fritzman · 15 Nov 2005

NothanUmber wrote: Mary is 34 years and eight months old. She is twice as old as NothanUmber was, when she was as old as NothanUmber is now.

How old is NothanUmber? ;P

Ok, that riddle is quite old but nontheless entertaining... 🙂

Greetings, NothanUmber

Heavy math! Come on, tell me, please. 😉

oddson · 15 Nov 2005

m= mary's current age n= notanUmber's current age x= time in years since condition given was true

(1) m=2(n-x) (2) n= m-x

from (2) sub into (1) m=2((m-x)-x) OR x=m/3

sub into (2) n=2/3m

But that give 23 years and 1 and 1/3 months? Which sounds a little too specific.

fritzman · 15 Nov 2005

double post.

fritzman · 15 Nov 2005

oddson wrote: m= mary's current age n= notanUmber's current age x= time in years since condition given was true

(1) m=2(n-x) (2) n= m-x

from (2) sub into (1) m=2((m-x)-x) OR x=m/3

sub into (2) n=2/3m

But that give 23 years and 1 and 1/3 months? Which sounds a little too specific.

Hey oddson!

Thanx for the math. 🙂

All the best, FRitz

oddson · 16 Nov 2005

Me thinks he may be 23 and Mary should be 34 and six months!?

NothanUmber · 16 Nov 2005

Hm, my 23th birthday is already a few years in the past 😉

The original riddle was very popular in the USA in the twenties under the name "how old is anne" (just replace NothanUmber with Anne and 34 years and 8 month with 24 years)

That's how you must think:

First you have to see that there are two points of time that are relevant - now and the date when Mary was as old as NothanUmber is now.

So let's call them

mn : mary now nn : nothanumber now mp : mary in the past np : nothanumber in the past

Now let's see which informations we can get from the two sentences:

Mary is 34 years and 8 month old:

mn = 34 2/3 (1)

She is twice as old as NothanUmber was,

np = mn / 2 = 17 1/3 (2)

when she was as old as NothanUmber is now.

mp = nn (3)

And given to the fact that both get older at the same speed (if there's not too much near-lightspeed spaceship-travel involved 😉 ):

nn - np = mn - mp (4)

Now all you have to do is to solve that equation system to nn:

2 * nn = mn + np (3)&(4): (5)

nn = (34 2/3 + 17 1/3) / 2 = 52 / 2 = 26 (5)&(2)&(1)

so that's it, I'm 26 atm. 🙂

Tom7777 · 16 Nov 2005

🙂

fritzman · 16 Nov 2005

NothanUmber wrote: Hm, my 23th birthday is already a few years in the past 😉

... lotsa smart Sherlock Holmes style thoughts and math ...

so that's it, I'm 26 atm. 🙂

Ah, ok. You're 26. 🙂 😉

All the best, FRitz

djaram · 17 Nov 2005

I just got 18 couple of months ago. (18h 😀 )

lanrosta · 17 Nov 2005

35

cbit · 19 Nov 2005

27 😀

rlahalla · 27 Nov 2005

26. wanna be 16 again, but I forgot my magic red shoes 😕

TheAudiophileDutchman · 27 Nov 2005

34, and counting.... 😀

Kara · 28 Nov 2005

&H2F

Rony

mookid · 15 Dec 2005

In Octal, 36 🙂

doug4350 · 16 Dec 2005

Ten leap years and a LSb.

I used to be half as old as my father when I was as old as my father was the day I was born (a little more math user friendly than NothanUmber and Mary) . 😉

Aloha, Doug

NothanUmber · 16 Dec 2005

doug4350 wrote: Ten leap years and a LSb.

sorry, don't get this sentence... (is that part of the riddle below? If yes, 10 leap years between what and what does LSb mean? (least significant bit doesn't make sense - or does it?))

doug4350 wrote: I used to be half as old as my father when I was as old as my father was the day I was born

Doesn't every person reach an age once in his/her live where he/she is exactly half as old as his/her father and wasn't the father in any case half as old at the time when that person was born as he is at the time when the child-is-half-as-old-as-father event occurs no matter how old the person and the father are? Imo some important additional information is neccessary in order to solve that riddle (perhaps that's just the sentence from above that I didn't understand or one can get additional information out of the lower sentence that I missed - what would be a further indication that I should really go to bed now 🙂 ).

Greetings, NothanUmber

doug4350 · 16 Dec 2005

sorry, don't get this sentence... (is that part of the riddle below? If yes, 10 leap years between what and what does LSb mean? (least significant bit doesn't make sense - or does it?))

Nope, two separate trivia tidbits. 10 leap years (10 * 4 == 40) and a LSb (yep, least sig. bit [implied 1]), so, 10 * 4 + 1.

Imo some important additional information is neccessary in order to solve that riddle

Actually, that was more twisted small talk than a riddle. 😈 But even in your groggy state, you did catch that everyone hits that age. You have a good sleep, and I'll come up for air again...

Aloha, Doug

HansM · 16 Dec 2005

silly riddles.... I've always been younger than my father...

41 here.

Tom7777 · 16 Dec 2005

🙂

fritzman · 16 Dec 2005

HansM wrote: silly riddles.... I've always been younger than my father...

41 here.

😀 😀 😀

NothanUmber · 16 Dec 2005

doug wrote: so, 10 * 4 + 1.

aha, schätschit 🙂

HansM wrote: silly riddles....

ochnö, good riddles are cool! 😍

HansM wrote: I've always been younger than my father...

Woah, so finally you, too? What's going on with this world, conspiracy everywhere...

Greetings, NothanUmber

HansM · 16 Dec 2005

NothanUmber wrote: ochnö, good riddles are cool! 😍

lol. I couldn't find an elegant one with the age differences here... all prime numbers. Even using 29H and 0AH I end up nowhere...