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Ah-sweet mystery of life at last I found you!

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itsid

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Well, I cannot believe in things that are impossible to prove or disprove myself,
I like to think some of them are true though (oh.. this is going off topic ;))

Anyways.
I strongly believe in science, (ah much better topic :D)
and there is no scientific failures in that clip that I can detect.
There is no such object (checked)
but if there was it must follow the same rules of physics as any other object (checked)
the rules of physics tell us it mustn't be accelerateable (checked)
that is none would have any effect on the other ...

No, this isn't even a philosophical question,
and the math proves this video to be correct...

The only option that is left, is a different universe with different physics.
I don't think that's what the original question intended though ;)

'sid
 

itsid

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Nope (I don't get the joke... accadacca??)

Anyways, the pattern is easier to spot if you replace the letters with numbers ;)

'sid
 

Poboy kartman

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You have 12 gold coins and a balance scale. One of the coins is counterfeit. Using only 3 weighings, how would you determine which coin was counterfeit and whether it is lighter or heavier?
 

Doc Sprocket

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Between the unstoppable force and the immovable object, the force wins. The object may be immovable, but nobody said anything about indestructible... ;)
 

danssoslow

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You have 12 gold coins and a balance scale. One of the coins is counterfeit. Using only 3 weighings, how would you determine which coin was counterfeit and whether it is lighter or heavier?

Split the coins into three groups of four.
(1s)Weigh any two sets. If the sets balance, you've found the unweighed set is the phony.
Split that into two groups of two.

(2nd)Weigh one of the sets, a single coin on each side.(scenario 1) If it balances, your phony is in the unweighed set. (scenario 2)If it's unbalanced, the phony is on the scale.

(3rd scenario 1)Pull one coin off to the side. Take one coin of the unwieghed set; if it balances, the unweighed coin is the phony. No weight known. :(

(3rd scenario 2)Pull right coin off. Replace it with one of the unweighed coins. (result1)If it's balanced, the one you pulled off is the phony; and would know by previous balance if it is lighter or not. (result2)if it is unbalanced, then the left one is the phony; and would know by balance the weight.

The caveat here is, what happens if the first weighing wasn't balanced? I'd need one more weighing. :(
 

Poboy kartman

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Split the coins into three groups of four.
(1s)Weigh any two sets. If the sets balance, you've found the unweighed set is the phony.
Split that into two groups of two.

(2nd)Weigh one of the sets, a single coin on each side.(scenario 1) If it balances, your phony is in the unweighed set. (scenario 2)If it's unbalanced, the phony is on the scale.

(3rd scenario 1)Pull one coin off to the side. Take one coin of the unwieghed set; if it balances, the unweighed coin is the phony. No weight known. :(

(3rd scenario 2)Pull right coin off. Replace it with one of the unweighed coins. (result1)If it's balanced, the one you pulled off is the phony; and would know by previous balance if it is lighter or not. (result2)if it is unbalanced, then the left one is the phony; and would know by balance the weight.

The caveat here is, what happens if the first weighing wasn't balanced? I'd need one more weighing. :(

You're OK with the first step. You are already wrong on the second. Actually only splitting into groups of 4 is correct. (I just noticed that you included part of step 2 with 1).
 

J_Walker

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You have 12 gold coins and a balance scale. One of the coins is counterfeit. Using only 3 weighings, how would you determine which coin was counterfeit and whether it is lighter or heavier?

Just tap the coins, no need to weigh them, they make different noises. a gold plated coin will sound different then a solid gold coin. I collect silver, and gold coins... [for their melt values] easiest way to detect a plated coin, is to drop it on a hardwood table. or something dense.

now if it was just less gold, but still considered counterfeit, it would be visually smaller. If it was gold alloyed with some other metal, the color would be different. [along side of the noise] and the coin will be bigger..
 

Poboy kartman

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Just tap the coins, no need to weigh them, they make different noises. a gold plated coin will sound different then a solid gold coin. I collect silver, and gold coins... [for their melt values] easiest way to detect a plated coin, is to drop it on a hardwood table. or something dense.

now if it was just less gold, but still considered counterfeit, it would be visually smaller. If it was gold alloyed with some other metal, the color would be different. [along side of the noise] and the coin will be bigger..

Ha ha ha ha.....no. The point of this is to use the scale and only 3 weighings to find the one counterfeit coin and determine it's weight difference. The solution must cover all scenarios. In other words- it must be impossible not to find the coin and weight.
 

itsid

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Between the unstoppable force and the immovable object, the force wins. The object may be immovable, but nobody said anything about indestructible... ;)
Well actually.. immoveable object implies indestructable..
Why? okay, think about it this way.. if you can break it into pieces and move the individual parts, after a certain amount of time you would have moved the whole object, which is IMPOSSIBLE, that is it is impossible to move any of it's pieces too, thus you cannot "disassemble" it not even violently, so it's indestructible.

You have 12 gold coins and a balance scale. One of the coins is counterfeit. Using only 3 weighings, how would you determine which coin was counterfeit and whether it is lighter or heavier?

didn't we had the exact same question just two weeks ago
in the other thread?

That's how Aussies refer to legendary rock band AC/DC :D
Ah.. I see.. well.. let's say this just isn't my music :D

Nup, still don't get it; I know I'm gonna be kicking myself later...
you will ;)

Last hint:

Read the first two lines out loud (letters or numbers doesn't matter)

'sid
 

Poboy kartman

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didn't we had the exact same question just two weeks ago
in the other thread?
'sid

I think so, but I don't remember anyone solving it......did they? If so then this should be a piece of cake!

But just to kill some time- an elderly woman was getting married to a funeral director. She had been married 3 times before: to a banker, then a circus performer and finally an attorney.

When asked about it at the reception, she said she married all four for a specific reason. Asked what that was- what was her response?
 

itsid

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I think so, but I don't remember anyone solving it......did they? If so then this should be a piece of cake!

But just to kill some time- an elderly woman was getting married to a funeral director. She had been married 3 times before: to a banker, then a circus performer and finally an attorney.

When asked about it at the reception, she said she married all four for a specific reason. Asked what that was- what was her response?

it was ;)

Anyways, just as I said that ac/dc just isn't my type of music you come with THIS question??

'One for the money... Two for the show... Three to get ready... now go, cat, go!'

'sid

PS I actually do own blue suede shoes ...
 

danssoslow

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I've been racking my head on that one above. I can get it multiple ways in four, each with a chance at three. My brother tried to explain the answer, which he looked up; but my mind is soup.

Here's one.

An electrician is finishing up his job, putting the 3 gang cover over three switches. Each switch controls one of three lights in the attic above the 5th floor. There are no dormers in the attic.

Before getting paid, the homeowner asks the electrician to label each switch to its corresponding light; switch 1-2-3 to lights a-b-c.

Not wanting to make multiple runs up and down the stairs, the electrician comes up with a way to find out which switch controls which light in one trip.

How did he do it?
 

itsid

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well if he knows which position of the switch is on and which is off, then it's easy..

flick switch 1 to on 2 and 3 to off...
wait a fair amount of time (say 15mins)
flick switch 1 to off and 2 to on

go upstairs...
light A is off and warm, belongs to switch 1
light B is off and cold, belongs to switch 3
light C is lit, belongs to switch 2

'sid
 

Poboy kartman

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I actually went back and looked at that thread and the question as posed was never answered. Someone Googled up a slide-rule answer that while is a solution- violates the parameters of the puzzle. I solved this problem personally and it took 3 brain racking days.

"USING ONLY A BALANCE SCALE"- you cannot mark the coins.
 

danssoslow

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I actually went back and looked at that thread and the question as posed was never answered. Someone Googled up a slide-rule answer that while is a solution- violates the parameters of the puzzle. I solved this problem personally and it took 3 brain racking days.

"USING ONLY A BALANCE SCALE"- you cannot mark the coins.


The coins wouldn't actaully have to be marked; but there will always be a control involved. The pain in the butt is remembering all the possible scenarios while keeping track of everything else.

I was working it out with 11 pennies and a dime. I'm at the point I'm going to walk up to the gas station and buy me a stick of Laffy Taffy and leave the change.
 

Poboy kartman

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How would you answer these 4 questions?

#1- How would you put a giraffe in a refrigerator?

#2- How would you put an elephant in a refrigerator?

#3- The Lion King is hosting an animal conference. All animals attend, except one. Which animal does not attend?

#4- There is a river you must cross, but it is known to be frequented by crocodiles, and you do not have a boat. How do you manage?
 

Poboy kartman

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The coins wouldn't actaully have to be marked; but there will always be a control involved. The pain in the butt is remembering all the possible scenarios while keeping track of everything else.

I was working it out with 11 pennies and a dime. I'm at the point I'm going to walk up to the gas station and buy me a stick of Laffy Taffy and leave the change.

Well- let me put it this way- the solution ought to be able to be described without labeling. If it has to be described with labeling, then it probably has to be performed with labeling.

I should tell the backstory on this puzzle. It's rumored to have been created to distract the other side in a war of old.

No doubt this is a tough puzzle without Google and I'm calling that answer out of bounds.
I solved this some 20 years ago when google was what you did with your eyes and a pretty girl. ..... (or was that oogle?)
 
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