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Riddles

Posted: 31st March 2004 21:08

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someone else take it... I'm all out of riddles atm.....

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Posted: 31st March 2004 21:15

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Ok Ok I got one.

What am I:
When I am empty nothing moves me,
When I am filled I can point the way,
I have two skins,
One without and one within.

Also Fadien can you explain your solution to gozaru~'s riddel I just don't get it.

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Posted: 31st March 2004 23:56

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Quote (The Gambler @ 31st March 2004 15:15)
Also Fadien can you explain your solution to gozaru~'s riddel I just don't get it.

I'll do my best... I'll start with the pattern I got it from.


102 people total. Ranger, Angie, and 50 people and their Partner.

Going to refere to each person as the number of hands they shook.


Now... Lets start at the person who shook hands with 100 people, out of 102 there. Now, we can logically deduce the fact that he can't shake his own hand, reducing it to 101 people, and the riddle says they didn't shake their partners hand. So, we know that 100 shook everyone but his own, and his partner.

That being said, the ONLY person who could be 0 is 100's partner. So 100 shook rangers hand, and 0 didn't.

Now... the person who shook 1 hand HAD to have shaken 100's hand, because 100 shook everyone but his and his partner. So 1 didn't shake rangers... From that, we can see that 99 had to have shaken everyone but 0's and 1's hand, and not their own (99 out of 102 people). That includes Rangers.

Since 2 only shook 2 hands, and 99 and 100 shook everyone elses hand, we can deduce that 2 didn't shake Ranger. 98 shook everyone but 0, 1, and 2, along with their own. (102 people, minus 4 hands they didn't shake = 98).

Since 3 had to have shaken 100, 99, 98, so no Ranger. 97 didn't shake 0, 1, 2, or 3, so had to have shook Ranger.......

Continue at that patern, and Ranger shook 51-100's hand (50 people), and didn't shake 0-50's hands (51 people) or his own (1).

50 people he did shake (answer), 51 he didn't, 1 as himself, that accounts for all 102 people at the party.

This post has been edited by Fadien on 31st March 2004 23:58

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"And that, my liege, is how we know the Earth to be banana-shaped” -Sir Bedevere the Wise
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Posted: 1st April 2004 02:36

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Quote (The Gambler @ 31st March 2004 16:15)
What am I:
When I am empty nothing moves me,
When I am filled I can point the way,
I have two skins,
One without and one within.

A glove?

This post has been edited by Hanyou on 1st April 2004 02:37

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Posted: 1st April 2004 22:02

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Yea...I was hoping it would take longer. Hanyou your up.

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Posted: 1st April 2004 22:12

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How can you make the following equation true by drawing only one straight line:
5+5+5=550


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Posted: 1st April 2004 22:23

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Instead of an equals sign, draw the line through it so the equation reads "5+5+5 does not equal 550".

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Posted: 1st April 2004 22:34

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While that would work, it's not what I'm looking for. The answer will equal 550.

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Posted: 2nd April 2004 01:07

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With one straight line, make it 545+5 = 550.

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Posted: 2nd April 2004 19:42

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Correct, you're up Goobers.

This post has been edited by Hanyou on 2nd April 2004 19:42

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Posted: 3rd April 2004 04:39

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I have something really rare and valuable that I can only send to you by mail. I have to put it in a chest, which is fitted with spaces for multiple locks. Now, I have a set of locks, and the set of keys corresponding to each of those locks. However, you have none of the keys to my locks. How can I send you the chest safely?

Note: I cannot mail you the key, because I am afraid it will get lost during delivery. The chest must be locked, because otherwise, someone might open the chest and take it. I will never see you in person, so I cannot give you the key then. Also, no locksmith or lockpick can open my locks. It MUST be opened with my key.

Wow, this riddle sure does have a lot of real life applications, huh?

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Posted: 3rd April 2004 04:53

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Just Send the Key With a Friend

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Posted: 3rd April 2004 15:04

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Send the key in a chest with a lock that the recipient already has the key for happy.gif

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Posted: 4th April 2004 05:11
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well, if the chest is able to be *fitted* with an extra lock, then you could send friend the chest, lcoked, and he could fit the chest with his own unopenable lock to which he ahs the key. the he sneds it back to you, you open your locks, and send it back to him.
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Posted: 5th April 2004 02:07

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Man, Gozaru is KILLING my riddles!

You're up.

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WHEEEEEEEEEEEEEEEEEEEEEEEEEEE!
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Posted: 5th April 2004 03:26
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killing ymself, too, can't seem to think of a very good one...let's go with the poison tasting, then.

there is a king who has 10 criminals in his dungeon. he also has 1000 bottles of wine. however, one of the criminals in the dungeon got there because he poisoned one of the bottles on wine (with an odorless, colourless, tasteless poison). now, this poison takes 4 weeks to kill the victim, up until which time no symptoms are visible. we also have a very intelligent king -- he is going to use his 10 prisoners to determine which bottle of wine is poisoned, and it will only take him five weeks. what was the king's ingenious plan?

edit -- "four weeks" is not exact, and "five weeks" is only because of it is some random time longer than "four weeks."

This post has been edited by gozaru~ on 5th April 2004 05:54
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Posted: 5th April 2004 04:03

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Assuming that by 4 weeks, you mean exactly 4 weeks, to the hour, this is my solution. Each prisoner tastes some of one bottle at every hour of the day he is awake, which we assume to be 15 hours. This means, one at 7, 8, 9, 10, 11, 12, 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 o'clock. They continue this for 7 days. 15 bottles a day, times 10 prisoners = 150 bottles a day total. 150 bottles, times 7 days = 1050 bottles total. Thus, each bottle will be tested before the week is up. Since it is within a week, if the very last bottle is poisonous (drunk on the 7th day), the king will find out before the 5 weeks are up. Each bottle is numbered and time of consumption as well as drinker are recorded. Thus, if the poisonous bottle is drunk by Prisoner 3 on the 6th day at 7:00 PM, he will die exactly 4 weeks later, on day 34, at 7:00 PM. That's all I can think of.

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Posted: 5th April 2004 19:22

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You could torture them until they spill the info. happy.gif

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Posted: 6th April 2004 02:23
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let me give a hint: there are two methods for solving this problem (that are actually the same method, but two seperate ways of looking at it). the hint is that one of the methods should be fairly obvious to CS junkies, while the other method is for math nerds. think really hard about what we can do with 10 prisoners...we have 1000 bottles of wine...
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Posted: 6th April 2004 07:03

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If nobody offers a solution, would anyone mind if I posted one?

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Posted: 7th April 2004 16:20
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it's been long enough. go ahead and post a solution, however i don't think by the rules you can have the next turn, i think it has to be free...
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Posted: 7th April 2004 18:12

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That's cool with me, I'm out of riddles.

So, here's my solution to your riddle after your comment about CS junkies.

Label each bottle in 10 digit binary instead of decimal. So bottle one is 00 0000 0001, bottle two is 00 0000 0010, bottle 37 is 00 0001 0011, etc. Each digit represents a prisoner.

Now, if the bottle (now labeled in binary) has a 1 in a certain digit, give it to that prisoner. So prisoner one would drink from bottle one, prisoner two drinks from bottle two, prisoners one, two, and five drink from bottle 37, etc.

After four weeks, take the prisoners who died and the prisoners who didn't, and transform it into a binary number. So if after four weeks, prisoners ten, eight, three, and two died, you would get
10 1000 0110. Transform that back to decimal, and you have your poisoned bottle.

I think that works... and by the way, why did you say it would take five weeks (or a random amount of time greater than four weeks)?

This post has been edited by Goobers on 7th April 2004 18:13

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Little miss Muffet, sat on her tuffet,
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WHEEEEEEEEEEEEEEEEEEEEEEEEEEE!
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Posted: 8th April 2004 00:23
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yep, that's the correct answer. the mathematical solution is taking 10C(0-10) for 2^10 or 1024 total possible combinations of prisoners and assign bottles in the same method. i said it would take more than four weeks because the prisoners would not die for four weeks and obviously it could not be any shorter than four weeks. five weeks is non-specific, it's just to show that the prisoners will have had the *chance* to die (by the four weeks) but also that there isn't just an infinite amount of time for the solution.
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Posted: 8th April 2004 11:32

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Since it's free, I'll take it:

What do we all put off until tomorrow?

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Posted: 8th April 2004 17:59

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The next day? (fancy way of saying tomorrow.)
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Posted: 9th April 2004 12:43

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nope

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You can be as self-assertive as you like, just so long as you do what you’re told.” - Granny Weatherwax

"When Mr. Safety Catch Is Not On, Mister Crossbow Is Not Your Friend" - Sam Vimes to Detritus
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Posted: 9th April 2004 13:36

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Waking up?

PB78
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Posted: 9th April 2004 21:08

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work tongue.gif

at least that's what I always put off until tomorrow

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Posted: 10th April 2004 05:33

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The bedroom lights?

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Posted: 10th April 2004 12:07

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Nope, nope. Think about the question, guys. What do you -really- put off?

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You can be as self-assertive as you like, just so long as you do what you’re told.” - Granny Weatherwax

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