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The Man
Baiting Guru
Joined: 11 Apr 2007
Posts: 2885
Location: La La Land
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Posted:
Sat Jul 21, 2007 7:02 pm |
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Peanut:
Thanks for disproving math. I hate math.
As for the extra dollar, there was a probably a lawyer involved |
_________________ ---
The Man
YOU ARE A CHILD OF SATAN WITH YOUR HUNGRY DIRTY BODY ,TUNDER FIRE YOU BIG HEAD IDIOT !!! HA HA HA HA HA
IS THIS HOW YOU DECIDED TO TREAT US AFTER ALL WE WENT THROUGH?YOU MADE US TRAVELLED TO ABUJA AND INDEBTED US.
"Cursed is your mother that gave birth to a family-disgrace like you. Cursed is your father he could not control his lust for anything under skate"
"hey u crakhead motherf*cking nitwit, from the way u express the cockamamy sh*t that ur dumb brain is made up of it's so obvious that u never really made it past elementary school but anywayz dogs don't have to go to school afterall."
(Lagos to Abuja)
x2
<---in lieu of a brownie. TS
x8 |
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bill2
Baiting Guru
Joined: 10 Sep 2006
Posts: 5495
Location: Yeah who can tell me where I am?
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Posted:
Sat Jul 21, 2007 8:17 pm |
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Quote: |
I will of course eat humble pie if you can find a scenario my method gets wrong. |
Now why would I want to do that, you used your brain, that's all puzzles are for
About yours, that's an endless equation in R1 and R2, but solvable, maybe a rainy day, it's now close to 100 degrees and my attention span gets a bit shorter then |
_________________ I don't do bling, I just do lads |
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SumYunGai
Master Baiter
Joined: 04 May 2007
Posts: 139
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Posted:
Mon Jul 23, 2007 5:26 pm |
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Quote: |
You have a circular lawn. You wish to tether the goat to one edge of the lawn so that he can eat exactly half of the grass. How long should the chain be in terms of the radius of the lawn? You can make the standard assumptions, such as that the goat is infinitely small and so forth. |
In this puzzle, we have two circles that overlap (the lawn and the goat's tether). This overlap must be exactly half of the lawn circle.
The simple answer (and depending on how you look at it, a cheat) is to attach the goat's chain to a post at the edge, then run it through a ring in a stake somewhere in the lawn such that the excess chain forms a circle completely bounded by the lawn and is 70.7% of the radius of the lawn. In this case the chain can be anywhere from twice that (1.4x the lawn's radius) to the diameter of the lawn. |
_________________ MUGU-baiting for fun, usually not for profit. |
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bill2
Baiting Guru
Joined: 10 Sep 2006
Posts: 5495
Location: Yeah who can tell me where I am?
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Posted:
Mon Jul 23, 2007 5:43 pm |
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LOL I'm doing difficult
I give up |
_________________ I don't do bling, I just do lads |
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kleindoofy
*** BANNED ***
Joined: 24 Oct 2004
Posts: 6248
Location: Europe
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Posted:
Mon Jul 23, 2007 7:50 pm |
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thud419 wrote: |
... You have a circular lawn. You wish to tether the goat to one edge of the lawn so that he can eat exactly half of the grass. How long should the chain be in terms of the radius of the lawn? ... |
Working on the assumption that this involves Pi, that chain will be impossible to make. Why? The length of a chain in finite. It is measurable. It has an end (two in fact) and an exact length. The exactness of Pi on the other hand is (most probably) infinite. Even with a Cray supercomputer, you would spend the rest of your life trying to find the right spot to cut the chain and fail. Nobody will ever get it right.
One can probably *express* how long it should be, using π, but the chain will never be manufactured, at least not correctly. |
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thud419
Baiting Guru
Joined: 04 Jan 2006
Posts: 3193
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Posted:
Tue Jul 24, 2007 9:13 am |
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Apart from the fact that all things, even pi, can be stated to three significant figures...
Chains are already made in terms of pi. Each link is made from a pieces of steel rod of a certain length, which is then bent into a circle. The length of the steel rod becomes the circumference of the circle, and the diameter of the circle determines the length of the link. So the length of the chain of n links is
length = n * rod-length / pi
(Neglecting the diameter of the rods) |
_________________ Click here to feel warm and cozy.
I did not f**k your wife in any way -- Nike Akanbi
I don't know what else to do or do I continue filling and filling forms. -- Barr. Koloti
you has been dribbling me up and down but I will show some thing you have never seen before, I think you breath air wait and see. -- Barr. Cole
x14
x 0.25 won from Reaper in a sucker's bet
x8 x several |
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wokabo
Master of Master Baiters
Joined: 23 Sep 2004
Posts: 825
Location: best beer country in onomatopoeia world
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Posted:
Tue Jul 24, 2007 11:15 am |
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thud419 wrote: |
I realised my mistake after I'd gone to bed. You can remove three bags before the second weighing.
Weigh 1 2 3 4 vs 5 6 7 8
If unequal, label all bags on the light side L, and on the heavy side H
--8<------
really really complicated explanation - may work but I didn't read it ;
-->8------
that is the faulty bag. |
Thud, you're overcomplicating things here.
1) weigh 6 against 6 bags. The side going up has the faulty bag.
2) From those 6, weigh 3 against 3. The side going up has the faulty bag.
3) From those 3, put one bag on each side of balance. If one side goes up, that's the faulty bag. If it stays in balance, the 3rd bag is the faulty one. |
_________________
Fight My Brute |
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thud419
Baiting Guru
Joined: 04 Jan 2006
Posts: 3193
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Posted:
Tue Jul 24, 2007 12:28 pm |
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^^^ But you don't know if the faulty bag is light or heavy. So on each weighing you don't know if the light side or the heavy side has the faulty bag.
Edit: VVV |
_________________ Click here to feel warm and cozy.
I did not f**k your wife in any way -- Nike Akanbi
I don't know what else to do or do I continue filling and filling forms. -- Barr. Koloti
you has been dribbling me up and down but I will show some thing you have never seen before, I think you breath air wait and see. -- Barr. Cole
x14
x 0.25 won from Reaper in a sucker's bet
x8 x several
Last edited by thud419 on Tue Jul 24, 2007 1:06 pm; edited 1 time in total |
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GordonBennett
Baiting Guru
Joined: 29 Mar 2007
Posts: 2829
Location: Pedicabo ego vos et irrumabo
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Posted:
Tue Jul 24, 2007 12:58 pm |
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Let me get this straight.. you put the goat on one side, three bags of gold on the other.. stick the potato up your arse and pick up the coins.. no wait, I've missed something |
_________________
DIE MUDER FUCKER
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bill2
Baiting Guru
Joined: 10 Sep 2006
Posts: 5495
Location: Yeah who can tell me where I am?
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Posted:
Tue Jul 24, 2007 1:02 pm |
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Order a Pizza first |
_________________ I don't do bling, I just do lads |
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wokabo
Master of Master Baiters
Joined: 23 Sep 2004
Posts: 825
Location: best beer country in onomatopoeia world
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Posted:
Tue Jul 24, 2007 1:27 pm |
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thud419 wrote: |
^^^ But you don't know if the faulty bag is light or heavy. So on each weighing you don't know if the light side or the heavy side has the faulty bag. |
whoopsy! I thought I read the faulty bag is lighter. My mistake. |
_________________
Fight My Brute |
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kleindoofy
*** BANNED ***
Joined: 24 Oct 2004
Posts: 6248
Location: Europe
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Posted:
Tue Jul 24, 2007 8:20 pm |
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thud419 wrote: |
Apart from the fact that all things, even pi, can be stated to three significant figures ... |
Let's tell the people at Cray that. Man, they've been wasting *tons* of CPU calculating pi past 3.14. |
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bill2
Baiting Guru
Joined: 10 Sep 2006
Posts: 5495
Location: Yeah who can tell me where I am?
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Posted:
Tue Jul 24, 2007 9:24 pm |
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It's not so difficult, forget Pi or � and write 22/7 and you're very close with your calculations. |
_________________ I don't do bling, I just do lads |
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angusmactavish
419Eater is my life
Joined: 21 Aug 2004
Posts: 252
Location: Oglethorpe's colony Atlantic (GMT-5)
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Posted:
Wed Jul 25, 2007 3:33 am |
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Okay KD, I'm a civil engineer. From time to time I calculate the amount of stormwater that can run through a circular pipe. But in order to do this I must know the cross-sectional area of the pipe. The formula for the area of a circle as I'm sure we all know involves pi, which cannot be computed exactly because it never repeats itself out to an infinite number of decimal places (so the mathematicians tell us). Yet, the pipe surely has a finite area. So how do I calculate a finite area using a formula with a indeterminate variable? This is the point where I usually hyperventilate, but in the engineering world, the answer is, I get it close enough to serve practical purposes. |
_________________ U BE MAGA U ARE VERY WICKED I MUST TELL AND STUPID - Charles Blaise
Listen, my contact with you in this transaction does not warrant you to insult my personality for any reason. - Godwin Luis
x18 |
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thud419
Baiting Guru
Joined: 04 Jan 2006
Posts: 3193
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Posted:
Wed Jul 25, 2007 9:27 am |
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Pi is neither infinite nor indeterminate. It is merely irrational. As is all this head-scratching.
The fact that you don't know it's exact value is no problem, because you know it's value to any accuracy you could possibly want.
diameter of pipe: 3m (around 10 feet)
pi = 3.14159
area = pi.d = 9.42477 m2
This is almost certainly close enough for any reasonable use. To find out how accurate we can use a more accurate value of pi and compare the two answers:
diameter of pipe: 3m
pi = 3.14159265359
area = pi.d = 9.42477796077 m2
The difference between the two is the error we would get using the first value of pi. It amounts to 0.00000796077 m2, which is 7.9 mm2, or an error of less than one part in a million.
In KD's terms it's one character of 7 point text on a circular page ten feet across, or one character of 0.7 point on a circular page 1 foot across. Which is probably comparable to the size of a normal 10 or 12 point full-stop (ie period) on a page of A4/letter.
If that is not good enough, then we can use the second value of pi, accurate to 12 figures. To find out how accurate that is we use a more accurate value of pi:
diameter of pipe: 3m
pi = 3.1415926535897932384626433832795
area = pi.d = 9.4247779607693797153879301498385 m2
The difference between the last two is 0.6 micrometers2 |
_________________ Click here to feel warm and cozy.
I did not f**k your wife in any way -- Nike Akanbi
I don't know what else to do or do I continue filling and filling forms. -- Barr. Koloti
you has been dribbling me up and down but I will show some thing you have never seen before, I think you breath air wait and see. -- Barr. Cole
x14
x 0.25 won from Reaper in a sucker's bet
x8 x several |
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Reaper
Hello I'm New here!
Joined: 06 May 2007
Posts: 0
Location: Travelling in a fried-out combie. On a hippie trail, head full of zombie...
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Posted:
Wed Jul 25, 2007 9:39 am |
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Another Riddle: (very silly answer)
If you were locked in a concrete room, with no windows and no doors, and all you had inside the room was a table and a mirror, how would you get out?
Our camp leader person thing told us this and when she told us the answer we all
No googling!
another pretty easy one..
If you have it, you want to share it. If you share it, you don't have it. What is it? |
_________________ 110+
x15 x18 50+
Shola - 4.3k miles Lagos - Abidjan | Lagos - N'Djamena, Chad | Lagos - Sokoto "i have not eaten anything except water"
Mr Floyd - Lagos - N'Djamena, Chad | Lagos -N'Djamena --> Abeche, with RS (7 days in hell ) "we are dieing here"
Art Trophies: <a href="http://forum.419eater.com/forum/viewtopic.php?t=129502">Eva Bust</a> - <a href="http://forum.419eater.com/forum/viewtopic.php?t=135167">Reaper's Art Gallery</a>
- I am the King of Rome, and above grammar
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thud419
Baiting Guru
Joined: 04 Jan 2006
Posts: 3193
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Posted:
Wed Jul 25, 2007 10:18 am |
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wokabo
Master of Master Baiters
Joined: 23 Sep 2004
Posts: 825
Location: best beer country in onomatopoeia world
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Posted:
Wed Jul 25, 2007 11:30 am |
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thud419 wrote: |
(..)
diameter of pipe: 3m (around 10 feet)
pi = 3.14159
area = pi.d = 9.42477 m2
(..)
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Tssk Tssk. circumference = pi * d .
Area = pi * d^2 / 4 = 7.0686 m2
@Reaper: 1) climb out over the wall ? (If the room has no doors or windows, you must have gotten into it somehow I guess)
2) I know what it is but I can't tell you. |
_________________
Fight My Brute |
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thud419
Baiting Guru
Joined: 04 Jan 2006
Posts: 3193
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Posted:
Wed Jul 25, 2007 12:34 pm |
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The accuracy will be the same though, since pi is not squared. |
_________________ Click here to feel warm and cozy.
I did not f**k your wife in any way -- Nike Akanbi
I don't know what else to do or do I continue filling and filling forms. -- Barr. Koloti
you has been dribbling me up and down but I will show some thing you have never seen before, I think you breath air wait and see. -- Barr. Cole
x14
x 0.25 won from Reaper in a sucker's bet
x8 x several |
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kleindoofy
*** BANNED ***
Joined: 24 Oct 2004
Posts: 6248
Location: Europe
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Posted:
Wed Jul 25, 2007 8:09 pm |
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I was actually only being jokingly speculative about the chain never being the right length. According to thud419 the goat is, after all, infinitely small, so why not get the chain to follow suit ...
thud419 wrote: |
... it's one character of 7 point text on a circular page ten feet across ... |
Hmmm, capital W or small i?
(And don't bullshit with fixed-width characters )
[edit:] Pi R Squared? No, pie Are Round. Brownies are square. (sorry, couldn't resist.) |
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GordonBennett
Baiting Guru
Joined: 29 Mar 2007
Posts: 2829
Location: Pedicabo ego vos et irrumabo
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Posted:
Wed Jul 25, 2007 9:21 pm |
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@ reaper
Rub your hands together until they're sore. Saw the table in two. Two halves make a whole. Climb through the hole.
What the hell is the mirror for? And how did they lock him in if there's no doors? Aaaaah - gotcha! |
_________________
DIE MUDER FUCKER
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angusmactavish
419Eater is my life
Joined: 21 Aug 2004
Posts: 252
Location: Oglethorpe's colony Atlantic (GMT-5)
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Posted:
Wed Jul 25, 2007 9:36 pm |
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thud419 wrote: |
because you know it's value to any accuracy you could possibly want. |
That was my point exactly. |
_________________ U BE MAGA U ARE VERY WICKED I MUST TELL AND STUPID - Charles Blaise
Listen, my contact with you in this transaction does not warrant you to insult my personality for any reason. - Godwin Luis
x18 |
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Josh
Elite Baiter
Joined: 24 Apr 2007
Posts: 1799
Location: Nu Zilund
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Posted:
Thu Jul 26, 2007 12:16 am |
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@ Reaper. I assume the answer was that you couldn't have got in to the room? Although that's not necessarily true if the concrete was set around you. Then I don't know how you'd get out. |
_________________
If you know what is going on here, you will be shock to your marrows - Captain Brian
Ahm3d K4diri: Tamale (Ghana) - Porto Novo (Benin) |
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thud419
Baiting Guru
Joined: 04 Jan 2006
Posts: 3193
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Posted:
Thu Jul 26, 2007 9:35 am |
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@Gorden, I'd love to know what the mirror is for too.
Since it's a concrete wall, I'd rub my hand there instead, it's quicker and you only need one saw.
Once you're outside, shout yourself hoarse, and then ride off on the horse. That way they can't catch you. |
_________________ Click here to feel warm and cozy.
I did not f**k your wife in any way -- Nike Akanbi
I don't know what else to do or do I continue filling and filling forms. -- Barr. Koloti
you has been dribbling me up and down but I will show some thing you have never seen before, I think you breath air wait and see. -- Barr. Cole
x14
x 0.25 won from Reaper in a sucker's bet
x8 x several |
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Bobo419
Master Baiter
Joined: 01 Dec 2006
Posts: 150
Location: Somewheeere over the Rainbooow
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Posted:
Thu Jul 26, 2007 6:46 pm |
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any chance of getting this thread past a 100 posts? it'd be a first for me...
Pretty please? |
_________________ The question really is... the egg or the chicken : which do you eat first?
crime doesn't pay... but the hours are good !
Early to bed, early to rise
Makes a man healthy, wealthy and wise
- and a milkman - |
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