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Shadowcaller
2008-04-20, 04:55 AM
I will give you some facts about something and then I am going to ask you a question.
Since the question is impossible to answer until you know exactly what have happened you must first ask me some questions to get some more facts.
But you can only ask yes or no questions I will not answer anything else.
I will give you an example:
The fact: There is a ball in a specific color here.
The question: What color is the ball?
Yes/no questions to get more facts: Is the ball red?
No
Is the ball green?
Yes
And thus he completed the trail question.
Anyway if you have posted in "the room" thread you know how this works so lets get on with it.


Here is the first question:
There is a room.
Inside the room there are lots of people.
One of them are dead.
In some moments everyone except one of them are going to be dead.

What is going to happen in the room and why?

Shadowcaller
2008-04-20, 03:16 PM
I'm "restarting" the room again if anyone is intrested.

Haruki-kun
2008-04-20, 03:18 PM
Is there a killer in the room?

Fin
2008-04-20, 03:19 PM
Is the room on/in a vehicle of some description?

Shadowcaller
2008-04-20, 03:19 PM
Yes there is a killer in the room.

Shadowcaller
2008-04-20, 03:21 PM
Is the room on/in a vehicle of some description?

No it is not.

evnafets
2008-04-20, 03:25 PM
Is it a funeral?

Shadowcaller
2008-04-20, 03:26 PM
Is it a funeral?

No it is not a funeral

Edit: Well i'm going to bed now, feel free to ask more questions and I will answer them tomorrow, goodnight.

quiet1mi
2008-04-20, 08:13 PM
Is the room.....the stomach of some large creature and the people are being slowly digested?

Shadowcaller
2008-04-21, 12:25 AM
Is the room.....the stomach of some large creature and the people are being slowly digested?

No it is not.

Studoku
2008-04-21, 02:52 AM
I have a theory:

They're playing CoD4. The dead guy has martydom.

Shadowcaller
2008-04-21, 04:42 AM
I have a theory:

They're playing CoD4. The dead guy has martydom.

Hehe my brother loves CoD4 but no it is not correct:smallwink:.

evnafets
2008-04-21, 04:55 AM
Has the "dead" person been dead long?
Is the dead person "undead"?

Shadowcaller
2008-04-21, 05:59 AM
Has the "dead" person been dead long?
Is the dead person "undead"?

Yes the person have been dead for a long time.
Yes the dead person in the room is undead.
:smallbiggrin: (this is not as hard as you might think.)

Emperor Demonking
2008-04-21, 10:14 AM
Is it a Dnd type world?

Is the undead creature being controlled?

Shadowcaller
2008-04-21, 10:20 AM
1.Is it a Dnd type world?

2.Is the undead creature being controlled?

1.Yes it is.

2.No it is not.

Emperor Demonking
2008-04-21, 10:38 AM
1. Is the undead going to kill the people?

2. Is the surviver a cleric?

Shadowcaller
2008-04-21, 11:08 AM
1. Is the undead going to kill the people?

2. Is the surviver a cleric?

1. Define "people".

2. No the surviver is not a cleric.

Emperor Demonking
2008-04-21, 11:15 AM
1. People as in "Inside the room there are lots of people."

Shadowcaller
2008-04-21, 11:28 AM
1. People as in "Inside the room there are lots of people."

1. No not technically atleast.

Emperor Demonking
2008-04-21, 11:32 AM
1. Are the people inside the room animals?

2. Are their people in the room?

Shadowcaller
2008-04-21, 11:45 AM
1. Are the people inside the room animals?

2. Are their people in the room?

(Just to clarify
Is the undead going to kill the people? I understand as:
"is the undead going to kill all the people inside the room".)

1.No they are not

2.Please clarify the question.

Emperor Demonking
2008-04-21, 11:51 AM
Don't worry about Q2.

1. Will the undead kill the people save for the one survivor?

Shadowcaller
2008-04-21, 11:56 AM
Don't worry about Q2.

1. Will the undead kill the people save for the one survivor?

1.No it will not directly kill all the people inside the room.

Emperor Demonking
2008-04-21, 12:07 PM
1. Will the undead indirectly kill the people save for the one survivor?

2. If yes, will the undead to it on purpose?

3. Do the people who die, die of natural causes?

Shadowcaller
2008-04-21, 12:11 PM
1. Will the undead indirectly kill the people save for the one survivor?

2. If yes, will the undead to it on purpose?

3. Do the people who die, die of natural causes?

(I'm giving away too many clues:smallbiggrin:)

1. Yes the undead will indirectly kill all the people save for the one survivor.

2. Yes the undead did it on purpose.

3. Like die of age? no they did not.

Emperor Demonking
2008-04-21, 12:17 PM
1. Did the survivor kill the people that will die?

Shadowcaller
2008-04-21, 12:24 PM
1. Did the survivor kill the people that will die?

No the survivor did not kill all the people that will die.

Emperor Demonking
2008-04-21, 12:27 PM
1.Is the undead a vampire?
2."" zombie?
3."" skeleton?
4."" lich?

5. Do the people, who are about to die, die at the same time?
6. Do they experience the thing that kills them, at the same time?

Shadowcaller
2008-04-21, 12:33 PM
1.Is the undead a vampire?
2."" zombie?
3."" skeleton?
4."" lich?

5. Do the people, who are about to die, die at the same time?
6. Do they experience the thing that kills them, at the same time?

1. No
2. No
3. No
4. Yes
5. No they die at different times
6. No they do not.

PhantomFox
2008-04-21, 02:20 PM
This kinda sounds like the comic where Xykon kills the room full of paladins.

Shadowcaller
2008-04-21, 02:21 PM
This kinda sounds like the comic where Xykon kills the room full of paladins.

And we have a winner!
(thought emperordemonking asked all the questions)

Good questions, took a bit shorter time then I expected:smallbiggrin:.

Anyone else want to have a go or should I make up another question?

Vavaara
2008-04-21, 10:29 PM
Here's a simple one:

There is a white box.
There are many insects flying around the box.
A man in white is walking towards the box.
There is a pail in his right hand.

What is going on?

PhantomFox
2008-04-21, 10:43 PM
Beekeeper coming to gather honey.

Now here's an old one.

A man walks into a small town in desperate need of a haircut. However, in this town, there are only two barbers. He walks over to the first and looks in the window. Yuck! The shop is all messy with hair all over the floor and the barber has really scruffy and poorly cut hair too! The man walks over to the other shop and looks in the window as well. Much better! This shop is nice and clean, everything nice an polished, and the barber's hair is well trimmed and nice.

The man stops and thinks for a second and then goes to the dirty shop to get his hair cut!

Why did he decide the way he did?

Vavaara
2008-04-21, 10:51 PM
Hehe, first try is the winner!

1. Does sex (male/Female) have anything to do with it?
2. Is money a factor?
3. Is he related to either barber?

PhantomFox
2008-04-21, 11:04 PM
No to all.

Vavaara
2008-04-21, 11:15 PM
1. Is it Opposite day and/or land?
2. Do the windows play an important role?

PhantomFox
2008-04-21, 11:37 PM
No to both.
Hint: His conclusion was logical

Shadowcaller
2008-04-22, 01:09 AM
1. Was there anything that could threaten the mans life inside the clean barber shop? (it usually are)

2. Was there something unusual with the clean barbershop that you often don't see inside barbershops?

3. Was there something unusual with the barber him/her-self?

4. Was there something that stopped the man from going to the clean barbershop?

5. Is the man in perfect health? (he is not crippled, blind, deaf or anything).

6. Was the clean barbershop closed?.

onasuma
2008-04-22, 01:24 AM
GOT IT! If there were two barbers, the dirty one must have cut the neat ones hair!

PhantomFox
2008-04-22, 08:58 AM
GOT IT! If there were two barbers, the dirty one must have cut the neat ones hair!

That is correct! No barber cuts his own hair, so the messy one must have gotten his bad hiarcut from the neat shop, and vise versa.
So the messy shop gives good haircuts, and the clean shop bad haircuts. Which also explains why the neat shop is neat. He has no customers and has nothing better to do!

Emperor Demonking
2008-04-22, 09:57 AM
Go on onasuma, give us another one.

Shadowcaller
2008-04-22, 11:15 AM
There is a person.
This person can not die.
But yet she/he never truly lived.
This person don't know what he/she is.
She/he will never find out.
What is this person?

Emperor Demonking
2008-04-22, 11:32 AM
1. Is the person a he?
2. Is it a DnD type world?

Shadowcaller
2008-04-22, 11:37 AM
1. Is the person a he?
2. Is it a DnD type world?

1. The persons gender is not relevant.

2. No it is not.

Emperor Demonking
2008-04-22, 11:55 AM
1. Does the person have a job?
2. Is the person, human?

Shadowcaller
2008-04-22, 11:59 AM
1. Does the person have a job?
2. Is the person, human?

1. No

2. No not technically.

Emperor Demonking
2008-04-22, 12:03 PM
1. Is this world Earth as we know it?

Shadowcaller
2008-04-22, 12:07 PM
1. Is this world Earth as we know it?

1. Yes the person technically exists in "the world as we know it".

PhantomFox
2008-04-22, 12:13 PM
Shot in the dark, but... 'nobody'?

Shadowcaller
2008-04-22, 12:18 PM
Shot in the dark, but... 'nobody'?

Yes technically the person is a "nobody" but what kind of "nobody"?

Cristo Meyers
2008-04-22, 12:38 PM
Is the person a dream?

Shadowcaller
2008-04-22, 12:39 PM
Is the person a dream?

Could be but no I was thinking of something different.

Doseki
2008-04-22, 12:50 PM
Is it a character in a book (or anime or any genre)? Can die but never truly alive. They don’t know there a made up character.

Cristo Meyers
2008-04-22, 12:53 PM
an imaginary friend then?

Shadowcaller
2008-04-22, 12:56 PM
an imaginary friend then?

Close but no sorry.


Is it a character in a book (or anime or any genre)? Can die but never truly alive. They don’t know there a made up character.

Really close but no I said the person can not die not permanently atleast.

Edit: A clue: this persons will is not his/her own.
Another more specific clue...

Shadowcaller
2008-04-23, 04:59 AM
I think that question was a bit broken and Doseki was technically right when he suggested a character in a book so he won.
What I was looking for was a game character like Sora in kingdom hearts.
They can not die (you just load some save or restart the game) but they are not truly alive either.
And they will never find out what they are.
Anyone else have a question?

PhantomFox
2008-04-23, 06:51 AM
More puzzles? I got a book of 'em around somewhere... however I have class in a bit so I can't answer questions for a little while.

Okay, here's one of the most famous lateral thinking puzzles.

A man lives in a ten story apartment building. Every morning, he gets up and gets ready to go to work, gets in the elevator, goes to the ground floor, and heads off to work. In the evenings, he comes back, gets in the elevator, and goes up to the sixth floor, and takes the stairs up the rest of the way. The only exception to this behavior is when it's raining. Why does he do this?

Freshmeat
2008-04-23, 06:58 AM
I know that one by heart, but I'm not going to spoil everyone's fun by solving it within minutes of it being posted.

*subscribes to thread, since it seems to have turned into a riddle topic*

Nychta
2008-04-23, 07:07 AM
Isn't there already a riddle topic, in friendly banter?

Fleeing Coward
2008-04-23, 07:26 AM
Yep but these ones here are more puzzles than true riddles and we're allowed to ask yes/no questions.
Heard of this one so I'll wait for someone who hasn't hear of it answer it.
Also PhantomFox, did you leave out the other exception intentionally to avoid making this too easy for those that havn't heard it?

Uncle Festy
2008-04-23, 08:17 AM
I've never heard another exception.
Shot next puzzle.

Fleeing Coward
2008-04-23, 08:21 AM
This other exception:
When another person is also in the elevator

Fin
2008-04-23, 10:05 AM
Yay, I've heard this one to!

*Goes to stand by Fleeing Coward and Freakmeat over in the clever section*

Emperor Demonking
2008-04-23, 10:07 AM
Is their anyone who doesn't know this one?

Doseki
2008-04-23, 11:24 AM
Me I've never heard it before and dont know the answer:smallconfused:

PhantomFox
2008-04-23, 02:27 PM
Hmm. Apparently that one is TOO well know. Lemme dig up another and leave that one on the back burner for those who haven't heard it.

Ah, here's one. Random adventure guy, Safari Joe was hacking though the underbrush in the African Jungle one day, when he stumbles across a village of savages. They quickly take him prisoner, as he's apparently broken some tribal law or another. The big chief comes up and informs him that the punishment for whatever crime it was (not important), is death. However, he's a nice chieftain, so he'll give Joe two options. Joe is to make a statement. If the statement is true, he'll be chucked off a tall cliff with sharp pointy rocks at the bottom. If the statement is false, he'll be thrown in a pit with a bunch of hungry lions.

Joe thinks about this for a while, and makes his statement. The chieftain, after hearing this thinks about it for a bit, and decides that the only fair outcome of this statement is to let Joe go.

What was the statement?

Freshmeat
2008-04-23, 03:29 PM
Hmm. Apparently that one is TOO well know. Lemme dig up another and leave that one on the back burner for those who haven't heard it.

Ah, here's one. Random adventure guy, Safari Joe was hacking though the underbrush in the African Jungle one day, when he stumbles across a village of savages. They quickly take him prisoner, as he's apparently broken some tribal law or another. The big chief comes up and informs him that the punishment for whatever crime it was (not important), is death. However, he's a nice chieftain, so he'll give Joe two options. Joe is to make a statement. If the statement is true, he'll be chucked off a tall cliff with sharp pointy rocks at the bottom. If the statement is false, he'll be thrown in a pit with a bunch of hungry lions.

Joe thinks about this for a while, and makes his statement. The chieftain, after hearing this thinks about it for a bit, and decides that the only fair outcome of this statement is to let Joe go.

What was the statement?

Drawing parallels from a similar story I've heard not too long ago (the story in question involving a trial), I'd wager an educated guess that the statement was: "You will throw me in a pit with a bunch of hungry lions."

I think the story (including all of its variants) is better told with the man in the end not going free, but still confusing the judge/chief/whatever, or receiving an alternative penalty.
In my mind, the entire 'going free' part makes no sense even when you know the answer. Why would the chief, who has given the man two options, both of which will result in him getting killed anyway, just let the man go free on the basis that (after hearing the man's statement) he simply doesn't know which one to choose? That part just bugs me.


After searching for a bit, I found the following interesting riddle:

A truck nears a bridge that is two miles long and can hold no more than 15000 lbs. Because the truck seems rather heavy, an official orders the truck driver to let his truck be weighed before crossing the bridge in question. Sure enough, the truck (including the driver himself, cargo, etc.) weighs precisely 15000 lbs. The official thinks this is a little risky, but decides to let the truck driver pass nonetheless.
The truck driver moves on, but when he is halfway across the bridge, he stops the truck to inspect his cargo. Everything is still there, in exactly the same state. While inspecting the cargo, a bird lands on top of the truck.
The driver now enters the truck again.

Does the bridge collapse or not?

Doseki
2008-04-23, 03:38 PM
No as the bird replace’s the fuel used getting it to the half way mark and the truck never goes over 15000 lbs.

I think.

Freshmeat
2008-04-23, 03:48 PM
No as the bird replace’s the fuel used getting it to the half way mark and the truck never goes over 15000 lbs.

You are correct.
Due to the way in which I rewrote the actual riddle, one could also conclude that the truck driver was carrying something in his pocket and threw it off the bridge before the bird landed on the truck. An example would be an apple the truck driver intended to eat while driving his truck across the bridge. He might then have discovered that a worm was inside the apple in question, and might subsequently have thrown the apple out the window, off the bridge.
However, the original explanation is by far the more interesting one.

I must express a bit of disappointment though. Is there no riddle out there that can't be solved in no time by the combined efforts of our forumgoers?

PhantomFox
2008-04-23, 03:54 PM
The reason saying 'I will be fed to the lions' would work because it's neither true OR false. If they feed him to the lions, the statement would have been true, and he should have been thrown off the cliff instead. Likewise, if he was thrown off a cliff, his statement would have been false, and he should have been fed to the lions. Killing him in either fashion would be breaking the deal, and so the only thing a fair man could do is to let him go. Alternate ending could have been stabbing him right then and there, for the chief does not like smarty-pants, but then we wouldn't have a happy ending! :smallbiggrin:

Doseki
2008-04-23, 04:02 PM
You are on a ship, over the side hangs a rope ladder with half meter rungs. The tide rises a half meter per hour. At the end of five hours, how much of the ladder will remain above the water assuming that nine rungs were above the water when the tide began to rise?

Fin
2008-04-23, 04:05 PM
Assuming the boat isn't sinking or getting heavier, there should be nine rungs after five hours.

If not I'll wipe this stupid smile off my face. :smallbiggrin:

Doseki
2008-04-23, 04:06 PM
You are correct sir:smallsmile:

This is the only other riddle i know hopeful not solved as quick :smallbiggrin:

A man takes a barrel that weighs 20 pounds, and then puts something in it. It now weighs less than 20 pounds. What did he put in the barrel?

Yspoch
2008-04-23, 04:19 PM
You are correct.
Due to the way in which I rewrote the actual riddle, one could also conclude that the truck driver was carrying something in his pocket and threw it off the bridge before the bird landed on the truck. An example would be an apple the truck driver intended to eat while driving his truck across the bridge. He might then have discovered that a worm was inside the apple in question, and might subsequently have thrown the apple out the window, off the bridge.
However, the original explanation is by far the more interesting one.

I must express a bit of disappointment though. Is there no riddle out there that can't be solved in no time by the combined efforts of our forumgoers?

<nitpick>
On the other hand you could say that the bridge did not collapse as the bird landed so why should it do so at the moment the driver enters his truck? There would have been the same weight the bridge has to carry wether the driver is in- or outside the truck.
</nitpick>

Fin
2008-04-23, 04:26 PM
You are correct sir:smallsmile:

This is the only other riddle i know hopeful not solved as quick :smallbiggrin:

A man takes a barrel that weighs 20 pounds, and then puts something in it. It now weighs less than 20 pounds. What did he put in the barrel?

I'm not trying to beat up your riddles but...

is it a hole?

Doseki
2008-04-23, 04:30 PM
RRRRRrrrr I said not as quick

evnafets
2008-04-23, 05:16 PM
Filling the barrel with helium gas would probably have the same effect. Provided you put a lid on it to keep it all in...

Freshmeat
2008-04-23, 05:26 PM
Allegedly Einstein thought up the following riddle, and only 2% of the world population can solve it. I'm going to state right away that I believe that to be nothing more than just an urban legend, since it's actually rather easy and I doubt anyone else will be completely unable to solve it.
It does take a bit of time to puzzle things out however. More than anything, it's a fun riddle.


***

- In a street there are five houses, painted five different colors.

- In each house lives a person of different nationality

- These five homeowners each drink a different kind of beverage, smoke different brand of cigar and keep a different pet.

Einstein's riddle is: Who owns the fish?

Necessary clues:

1. The British man lives in a red house.
2. The Swedish man keeps dogs as pets.
3. The Danish man drinks tea.
4. The Green house is next to, and on the left of the White house.
5. The owner of the Green house drinks coffee.
6. The person who smokes Pall Mall rears birds.
7. The owner of the Yellow house smokes Dunhill.
8. The man living in the center house drinks milk.
9. The Norwegian lives in the first house.
10. The man who smokes Blends lives next to the one who keeps cats.
11. The man who keeps horses lives next to the man who smokes Dunhill.
12. The man who smokes Blue Master drinks beer.
13. The German smokes Prince.
14. The Norwegian lives next to the blue house.
15. The Blends smoker lives next to the one who drinks water.

Shadowcaller
2008-04-24, 01:49 AM
I suppose we should not ask yes or no questions since it would be to easy otherwise.

Emperor Demonking
2008-04-24, 10:27 AM
The german, I think.

Freshmeat
2008-04-25, 02:13 AM
Mr. Demonking is correct. The fish indeed belongs to the German who lives in the green house.

Emperor Demonking
2008-04-25, 09:44 AM
A dwarf (Human dwarf not dwarf dwarf) went to his letter box then shot and killed himself. Why?

Shadowcaller
2008-04-25, 09:46 AM
Is the dwarf depressed?
Did he do anything else then shot himself at the mailbox?

Emperor Demonking
2008-04-25, 09:48 AM
1. No.
2. Yes.

Shadowcaller
2008-04-25, 09:55 AM
Did he have the gun before he arrived at the mailbox?
Was the dwarf in perfect physical condition (no diseases, borken legs and so on)?
Was he happy?
Sad?
Mad?
Angry?
Jealous?
"Normal" mood?
Did he meet anyone else on the way to the mail box?
Was the anyone else nearby when he shot himself?
Was there anyone else that was directly or indirectly involved in the dwarfs death?

Emperor Demonking
2008-04-25, 10:00 AM
1. Yes
2. Apart from being a dwarf, yes
3. No
4. No
5. No
6. No
7. No
8. No
9. No
10. No
11. Yes

Fleeing Coward
2008-04-25, 10:01 AM
Seems pretty simple
The dwarf thought he grew taller because he can reach the mailbox/mailbox is shorter and killed himself because he makes a living out of been a dwarf.

Emperor Demonking
2008-04-25, 10:06 AM
Yeah fleeing coward got it.

Shadowcaller
2008-04-25, 10:07 AM
Seems pretty simple
The dwarf thought he grew taller because he can reach the mailbox/mailbox is shorter and killed himself because he makes a living out of been a dwarf.

So the dwarf just walks around with a gun for no reason?:smalltongue:

Emperor Demonking
2008-04-25, 10:09 AM
Yes, the dwarf keeps his gun on hand at all times.

Shadowcaller
2008-04-25, 10:22 AM
Damn super-emotional, gun carrying dwafs...
He must have loved his work like a mad-man.

PhantomFox
2008-04-25, 02:21 PM
Since we're giving out puzzles, I might as well use the 'ol ball balancing problem. Though I'll make a few problems out of it

You have an equal arm balance scale and some identically looking balls, all weighing the same except one.

Easy:
You have 8 balls, and you know the odd ball out is heavier. How can you find it with only 3 weighings?

Not as easy:
How 'bout with only 2 weighings?

Harder:
How 'bout with 3 weighings, but you don't know whether the odd ball is heavier or lighter?

Hardest:
You have 12 balls, 3 weighings, and don't know whether the odd ball is heavier or lighter.

Freshmeat
2008-04-25, 03:14 PM
Easy:
You have 8 balls, and you know the odd ball out is heavier. How can you find it with only 3 weighings?

1 - Take any four balls and weigh them against the four remaining balls.
Depending on which side weighs more, you've narrowed the odd ball down to four balls now.

2 - Repeat the same procedure. You're now down to two balls.

3 - Now weigh the last two balls. The heavier one is the odd ball.


Not as easy:
How 'bout with only 2 weighings?

1 - Take any three balls and weigh them against three other balls.
You've now narrowed the odd ball down to three. If both sides weigh precisely the same, then you've narrowed the odd ball down to two (the ones that weren't weighed).

2 - Weigh two balls. Any two balls.
- if ball A is heavier than ball B, then that's the odd ball
- if ball B is heavier than ball C, then that one is obviously the odd ball
- if ball A and B weigh the same, then ball C must be the odd ball

Disregard ball C if the first weighing already narrowed the odd ball down to two possible balls.


Harder:
How 'bout with 3 weighings, but you don't know whether the odd ball is heavier or lighter?

1 - Weigh four of the eight initial balls. Two on one side, two on the other.
Depending on whether both sides weigh just as much or not, you've now narrowed things down to four balls.

2 - You now know 4 balls that definitely have a normal weight. Take two of them and weigh them against two potential 'odd ball' balls.
You've now narrowed things down to two balls.

3 - Weigh one of them against a normal ball. If they weigh the same, the one that wasn't weighed is the odd ball.


Hardest:
You have 12 balls, 3 weighings, and don't know whether the odd ball is heavier or lighter.

1 - Take any four balls and weigh them against four random other balls. If they weigh the same, then you've narrowed the number of potential 'odd ball' balls down to four. All you need to do then is weigh two of these against two normal balls (thus narrowing things down to two) and then weigh one of these against a normal ball to find the odd ball.
If you see that the 'odd ball' is amongst the eight weighed, then you might want to write down which group the scales indicate as lighter (or heavier) than the other group.

2 - Take six of these balls and weigh them against six normal ones. Make sure that you take three balls from the first 'light' group and three from the second 'heavy' group.
If the scales indicate that they weigh the same, then you've narrowed things down to two and you win (just weigh one of them against a normal ball during the third weighing).
If the 'odd ball' (why do I even bother putting quotating marks there each time? :smallconfused: ) is amongst the six balls weighted, you should now have an idea of whether the odd ball is lighter or heavier than a normal one.

3 - Since you separated the balls from the first weighing into a 'light' and a 'heavy' group, you now merely have to find the lightest or the heaviest ball out of three potentiall balls. So just weigh two of them against another. Whichever one is lighter (or heavier) is the odd ball. If they weigh the same, it's obviously the third and unweighed ball.

(see below)

PhantomFox
2008-04-25, 04:31 PM
Good except for the last one, step two. You say that you weigh 6 vs 6 good balls, but at this step, you only have 4 known good balls.

Freshmeat
2008-04-25, 05:08 PM
I noticed about 15 minutes ago and was already thinking of how to alleviate that problem. I believe the first step to still be the correct one, but that the trick lies in weighing an odd number of unknown balls and then switching two of them during the second weighing.
That is to say, once you've narrowed the odd ball down to eight possible balls, you need to take three balls from one group and two from the other, as well as a normal ball. For convenience's sake, we'll call whichever group was lighter 'Type A' balls. This would make the heavier group 'Type B' balls.

Put three Type A balls on one side and two Type B balls on the other side, along with a normal ball. (alternatively, put three Type B balls on one side and two Type A balls + a normal ball on the other side - both are fine).
Then switch the places of a Type A ball with that of a Type B ball (on the scales). For convenience's sake, we'll call these balls ball C and D (C being a Type A ball and D being a Type B ball).

There are now three possibilities:
- The side consisting of two Type A balls and ball D is heavier than the other side. Due to the first weighing, we know that the Type A balls cannot be heavy, nor can the single Type B ball on A's side be light. Therefore either ball D is heavy or ball C is light. During the third weighing you can easily compare one of them to a normal ball to find the odd ball.

- The side consisting of one normal ball, one Type A ball and ball C is heavy. Neither ball C nor ball D can be the cause of this. The normal ball is obviously not the odd ball as well. So one of the two Type A balls on D's side is light, or the single Type B ball on C's side is heavy. Weighing the two Type A balls against eachother will clear this up. If they have a different weight, the lightest one must be the odd ball. If they weigh the same, neither is light and the single Type B ball on C's side is the odd ball (and also heavy).

- Both sides weigh the same. Since for the purposes of this experiment one Type A ball and two Type B balls have been left out (though the opposite is entirely possible), all you need to do is weigh the Type B balls against eachother. Whichever one is heavier is the odd ball. If they weigh the same, then the last remaining unweighed Type A ball is the odd ball (and also light).

Emperor Demonking
2008-04-27, 06:46 AM
To be has three forms.
I am
you are
He is

Is it right to say "I is" give a reason for your answer.

evnafets
2008-04-30, 05:00 PM
To be has three forms.
I am
you are
He is

Is it right to say "I is" give a reason for your answer.

Yes it can be right.

example
"I is the 9th letter of the alphabet"

evnafets
2008-05-04, 10:53 PM
Rather than let it die, heres a riddle for you:



Three brothers share a family sport:
A non-stop marathon
The oldest one is fat and short
And trudges slowly on
The middle brother's tall and slim
And keeps a steady pace
The youngest runs just like the wind,
Speeding through the race
"He's young in years, we let him run,"
The other brothers say
"'Cause though he's surely number one,
He's second, in a way."

How Come?