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I need help with this riddle


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#1 Lloyd T

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Posted 01 April 2009 - 08:32 PM

Alright, so you're on this island, and you must get off. You find a road and follow it until you find a fork with two paths in front of you. One of these paths leads to freedom and the other to DOOM. In front of each path stands a talking cactus. One always tells the truth, and one always lies. You can only ask one cactus one question. What is the question?



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#2 JohnWho

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Posted 01 April 2009 - 08:43 PM

I would calmly explain to the two cactus plants that I'm taking them both with me, so if I do get the wrong road, they aren't going to be very happy.

:thumbsup:

Oh, then I would ask either what the other would answer if I asked "which road takes me to freedom?"


Here's hoping they both like to travel.


I know you think you understand what you thought I said,
but I'm not sure you realize that what you heard is not what I meant!


#3 KoanYorel

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Posted 01 April 2009 - 08:53 PM

Dang. I thought I posted this earlier....

Which one is named Sven?
The only easy day was yesterday.

...some do, some don't; some will, some won't (WR)

#4 Lloyd T

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Posted 01 April 2009 - 08:55 PM

I would calmly explain to the two cactus plants that I'm taking them both with me, so if I do get the wrong road, they aren't going to be very happy.

:thumbsup:

Oh, then I would ask either what the other would answer if I asked "which road takes me to freedom?"


Here's hoping they both like to travel.


You can only ask one cactus. One cactus, one question.


Dang. I thought I posted this earlier....

Which one is named Sven?


Er...what's a Sven?

#5 KoanYorel

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Posted 01 April 2009 - 08:58 PM

The one that responds as Sven lies... it's an old gambit.... giggle
The only easy day was yesterday.

...some do, some don't; some will, some won't (WR)

#6 extremeboy

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Posted 01 April 2009 - 08:58 PM

Hello.

*Cactus can't talk though... :thumbsup:

The question I would ask is: "Which door would the other cactus say is the safe door?"

I'll let you figure it out why that's the correct answer. I won't give it all away. It's actually pretty self-explanatory now. :flowers:

Hope that helps :trumpet:

With Regards,
Extremeboy
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#7 KoanYorel

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Posted 01 April 2009 - 09:04 PM

/Koan giggles.
The only easy day was yesterday.

...some do, some don't; some will, some won't (WR)

#8 extremeboy

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Posted 01 April 2009 - 09:07 PM

You can only ask one cactus one question. What is the question?

So the question I ask is only directed to one of those cactus? :thumbsup:

If so, then what I said isn't right... If it was adressed to both then yes it would work...

*I'll be leaving now and get back working in the HJT-Malware Removal forum. I just saw this topic and thought it was interesting.. :flowers:
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#9 Lloyd T

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Posted 01 April 2009 - 09:14 PM

Hello.

*Cactus can't talk though... :thumbsup:

The question I would ask is: "Which door would the other cactus say is the safe door?"

I'll let you figure it out why that's the correct answer. I won't give it all away. It's actually pretty self-explanatory now. :flowers:

Hope that helps :trumpet:

With Regards,
Extremeboy


Hmm...

If the cactus is saying the truth, then it would say that the other cactus will say the Doom Door (right or left).

If the cactus is lying, it would say the opposite of the safe door.

#10 extremeboy

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Posted 01 April 2009 - 09:21 PM

Hello.

Cactus1 = The Truth Cactus
Cactus2 = The Fraud/Lier Cactus

"Which door would the other cactus say is the safe door?"


Cactus1 will point to the Doom Door as that is what Cactus2 would point to.

Cactus2 would also point to the Doom Door because he will HAVE to LIE since he doesn't speak the truth even if Cactus1 says the truth and therefore the only door will be left is the door that isn't chosen by any of those cactus and that leaves us with... the Safe door. :thumbsup:

With Regards,
Extremeboy
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#11 JohnWho

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Posted 01 April 2009 - 09:25 PM

I would calmly explain to the two cactus plants that I'm taking them both with me, so if I do get the wrong road, they aren't going to be very happy.

:thumbsup:

Oh, then I would ask either what the other would answer if I asked "which road takes me to freedom?"


Here's hoping they both like to travel.


You can only ask one cactus. One cactus, one question.


Yes - and like I said, "I would ask either what the other would answer if I asked "which road takes me to freedom?"

It really doesn't matter which one I ask.


I know you think you understand what you thought I said,
but I'm not sure you realize that what you heard is not what I meant!


#12 JohnWho

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Posted 01 April 2009 - 09:27 PM

/Koan giggles.


Yeah, I'm thinkin'

Sven the Cactus just don't sound right, either.

:thumbsup:


I know you think you understand what you thought I said,
but I'm not sure you realize that what you heard is not what I meant!


#13 JohnWho

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Posted 01 April 2009 - 09:28 PM

Hello.

*Cactus can't talk though... :thumbsup:

The question I would ask is: "Which door would the other cactus say is the safe door?"


Oh, great -

with your solution we would have to build doors in front of the two paths first!

:flowers:


I know you think you understand what you thought I said,
but I'm not sure you realize that what you heard is not what I meant!


#14 Andrew

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Posted 02 April 2009 - 12:39 PM

What is the question?


*Amazing Andrew pulls out a cigarette.

"got a light?"

#15 Guest_Abacus 7_*

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Posted 02 April 2009 - 02:47 PM

Hello.

Cactus1 = The Truth Cactus
Cactus2 = The Fraud/Lier Cactus

"Which door would the other cactus say is the safe door?"


Cactus1 will point to the Doom Door as that is what Cactus2 would point to.

Cactus2 would also point to the Doom Door because he will HAVE to LIE since he doesn't speak the truth even if Cactus1 says the truth and therefore the only door will be left is the door that isn't chosen by any of those cactus and that leaves us with... the Safe door. :inlove:

With Regards,
Extremeboy


:thumbsup:

Actually to clarify it?

You only need to ask just one Cactus the question, "Which Path would the other Cactus say leads to Doom."

The Path shown is the Doom Path.

BTW this Riddle first came up on "Doctor Who" a BBC TV Series some 30 odd years ago. and was one of many enigmas raised in the Series.

Thanks for bringing it up again.

:flowers: :trumpet:




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