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View Full Version : Fast & Easy Way to Make Your Brain Explode!

Joetheeskimo
03-17-2005, 05:21 PM
Now that I've got your attention (:D), here's a brain-twister for you guys to figure out. WARNING: Don't try it if you never took 7th grade math.

The following is based on a famous problem about Diophantus, a Greek mathematician from the third century.

Find how long he lived based on the following facts:

One sixth of his life was spent in boyhood.
One twelfth of his life was spend as a youth.
After 1/7 more of his life passed, he got married.
Five years after getting married, he had a son.
His son lived 1/2 as long as Diophantus lived. (Don't ask me why :eyeraise: )
The son died 4 years before Diophantus died.

El Sitherino
03-17-2005, 05:25 PM
84.

tags
03-17-2005, 05:28 PM
well then, really no need for anyone else to post.

Curt-Man
03-17-2005, 05:29 PM
74.

Joetheeskimo
03-17-2005, 05:35 PM
84.
74.

:indif:

well then, really no need for anyone else to post.

Actually, I made the title vague on purpose so it could be a general post-your-brain-benders-thread. If any of you have got any...

El Sitherino
03-17-2005, 05:38 PM
Originally posted by joetheeskimo5
:indif:

?

Anyway, when do I get my prize?

Joetheeskimo
03-17-2005, 05:43 PM
Originally posted by InsaneSith
?

Anyway, when do I get my prize?

According to your answer...
One sixth of his life was spent in boyhood = 14 years of boyhood
One twelfth of his life was spend as a youth = 7 years of "youth"
After 1/7 more of his life passed, he got married = married at 39
Five years after getting married, he had a son = son at 44
His son lived 1/2 as long as Diophantus lived = son died at 42, which would be when his father was 86...so how could he have died at 84?

El Sitherino
03-17-2005, 05:45 PM
no no no.

Diophantus is 84.

Married at 33.
Had a son at 37.
Died when he was 84.

Joetheeskimo
03-17-2005, 05:46 PM
Originally posted by InsaneSith
no no no.

Diophantus is 84.

What was incorrect in my calculations above?

El Sitherino
03-17-2005, 05:47 PM
Originally posted by InsaneSith
Married at 33.
Had a son at 37.
Died when he was 84.

I did this before in school a long time ago. He died at 84.

Joetheeskimo
03-17-2005, 05:54 PM
Originally posted by InsaneSith
I did this before in school a long time ago. He died at 84.

Are you sure? It did say the puzzle was based on that one...might be different from yours.

El Sitherino
03-17-2005, 05:55 PM
Still he died at 84. :)

I even checked google (and wikipedia) to make sure I was correct, and I am. :)

Pad
03-17-2005, 06:28 PM
I checked it and as master in engineering I can honestly tell you his answer is absolutely correct.

x/7 + x/12 + x/7 + 5 + x/2 +4 = x
will be the equation (where x equals the total lifetime) and after some work you get
756 = 9x
or
84 = x

;)

BongoBob
03-17-2005, 06:51 PM
As I was trying to figure it out myself I slapped myslef and said "Man math sucks"

:D

El Sitherino
03-17-2005, 06:59 PM
Originally posted by Pad
I checked it and as master in engineering I can honestly tell you his answer is absolutely correct.This is why we just need to make it a rule that's written. I'm always right. That way we don't have to prove it each time. :)

Hermie
03-17-2005, 07:12 PM
I come here to relax after a hard day of school and I find what? A thread about math quizes?!!

[influence lost: Herminator]

Astrotoy7
03-17-2005, 07:24 PM
Fast & Easy Way to Make Your Brain Explode!

I thought this was a thread about crack. I am glad it is about maths :)

Originally posted by Pad
I checked it and as master in engineering I can honestly tell you his answer is absolutely correct.

;)

good to have another dude at LFN with a masters degree... :)

Let us form an axis of evil, I am sure with our combined genius we can overthrow LF and turn it into a pRon forum :p

* * *

Its way too early in the morning for me to attempt to figure out mathematical conundrums.... :( :p

mtfbwya

El Sitherino
03-17-2005, 07:36 PM
Bah, silly aussies and your wrong time. :p

Astrotoy7
03-17-2005, 07:40 PM
Originally posted by InsaneSith
Bah, silly aussies and your wrong time. :p

pfft.... GMT + 10 hours - we get to see ep3 almost a day before you do :p (GMT -7/8)

pwned by timeage :p

mtfbwya

El Sitherino
03-17-2005, 07:42 PM
.... :( That wasn't fair.

*goes and cries*

Boba Rhett
03-17-2005, 08:09 PM
It took me too long to remember how to do this. Everyone form a line and we can commence hitting me with sticks. :(

Joetheeskimo
03-17-2005, 08:43 PM
*Bows to IS's great math powers* :eek:

I thought this was a thread about crack. I am glad it is about maths :)

:lol:

Originally posted by Boba Rhett
It took me too long to remember how to do this. Everyone form a line and we can commence hitting me with sticks. :(

Oh, GOODY! :) *Finds a nice, solid whopper*

Sabretooth
03-18-2005, 05:47 AM
Maths makes my brain hurt. I had to get a transplant for 7th Grade.

*whacks rhett before his turn and runs into the jungle before anyone can realise*

Pad
03-18-2005, 01:38 PM
Originally posted by Astrotoy7
good to have another dude at LFN with a masters degree... :)
What did you study?

Originally posted by Astrotoy7
Let us form an axis of evil, I am sure with our combined genius we can overthrow LF and turn it into a pRon forum :p

Excellent!
There will be no one to stop us. :dev11:

Tyrion
03-18-2005, 02:20 PM
Originally posted by Pad

Excellent!
There will be no one to stop us. :dev11:

I think you guys also need someone who majored in Methodical Evilness, as you guys suck at hiding your secret plans.

:p

El Sitherino
03-18-2005, 02:59 PM
I for one welcome our new pornographic overlords.

ZBomber
03-18-2005, 03:02 PM
I get C's in math... so... yeh....

BongoBob
03-18-2005, 06:51 PM
As our pornographic overlords, will you make us star in your material?

The Seeker
03-19-2005, 12:40 PM
*thinks of hundreds of average looking gamer dudes doing a porno*

:barf::barf: :barf:

MAKE IT STOP!!! MAKE IT STOP!!! MUST GOUGE OUT MY MIND'S EYE!!!

boinga1
03-19-2005, 09:42 PM
I just spent 10 minutes solving this, and then I read the thread and see you all have already figured it out. :cry:

x= age
x/6 = boyhood
x/12 = youth
x/4 = boy = youth
x/4 + x/7 = marry age = 11x/28
11x/28 + 5 = son
son age = x/2
11x/28 + 5 + x/2 + 4=x
25x/28 + 9 = x
25x/28 - x = -9
-3x/28 = -9
-252 = -3x
84 = x