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Re: Fun Thread reloaded
[Re: Superku]
#385787
10/23/11 20:49
10/23/11 20:49
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Joined: May 2002
Posts: 7,441
ventilator
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Senior Expert
Joined: May 2002
Posts: 7,441
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Re: Fun Thread reloaded
[Re: Superku]
#386007
10/26/11 20:08
10/26/11 20:08
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Joined: May 2002
Posts: 7,441
ventilator
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Senior Expert
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Posts: 7,441
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Re: Fun Thread reloaded
[Re: ventilator]
#386131
10/29/11 10:27
10/29/11 10:27
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Joined: May 2002
Posts: 7,441
ventilator
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Senior Expert
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Re: Fun Thread reloaded
[Re: ventilator]
#386134
10/29/11 10:53
10/29/11 10:53
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Joined: Oct 2004
Posts: 4,134 Netherlands
Joozey
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Netherlands
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Hehe, there's a 33% chance to choose 25%, 33% for 50% and 33% for 60%. No answer fit the chance, so 0%.
But what should D) be instead, for having a valid answer?
Last edited by Joozey; 10/29/11 10:58.
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Re: Fun Thread reloaded
[Re: Joozey]
#386151
10/29/11 15:30
10/29/11 15:30
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Joined: Mar 2006
Posts: 3,538 WA, Australia
JibbSmart
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Expert
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WA, Australia
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Or, if you're arbitrarily choosing A) B) C) or D), you have a 50% chance of choosing 25%, and a 25% chance of choosing 50%. The intuitive answer is 25% in a four-choice multiple choice, which would make 50% the correct answer (since there are two 25% answers), but in that case the answer is 25% (since only one answer says 50%), but... so on and so forth. If D) was something different there are a few interesting possibilities -- if D) is 0% you could toy with the idea that none of the answers are correct (we haven't actually established that any of the answers are correct), except that it would make D) correct, making it incorrect, so A) would have to be correct because one of the answers other than D) must be correct. If D) was 50% then I'd say any answer other than C) is correct, kind of. There's only one 25%, and if it's deemed "correct", then there's a 25% chance of picking it. But with two 50%s, there's a 50% chance of picking that, so it could be "correct". Is its correctness determined by you picking it and then deciding if it holds true for it to be correct? Then you have a 75% chance of picking a correct answer and none of them are correct. Unless C) was 75%. Then I think we get another paradox. Then again, I'm not very good at probabilities, and have been wrong here before
Formerly known as JulzMighty. I made KarBOOM!
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Re: Fun Thread reloaded
[Re: Superku]
#386185
10/30/11 11:04
10/30/11 11:04
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Joined: Jul 2008
Posts: 1,178 England
MrGuest
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Serious User
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Posts: 1,178
England
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If you rewrite the question If you choose an answer to this question at random, what is the chance you will be correct? to If you choose an answer to the question, 'If you choose an answer to a question at random, with possible answers of A)25%, B)50%, C)60% or D)25%, what is the chance you will be correct?', what is the chance you will be correct? The only answer you would get is B. The only other argument you could have is it's never ending self-reference, therefore never being able to give an answer.
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Re: Fun Thread reloaded
[Re: MrGuest]
#386191
10/30/11 12:49
10/30/11 12:49
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Joined: Sep 2003
Posts: 6,861 Kiel (Germany)
Superku
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Kiel (Germany)
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The question does not ask whether A,B,C or D is correct, but the probability that you pick the correct out of 4 answers. So the intuitive answer is 25% (not A or D, but 25% or 1/4 or 0.25). However, the text is missing important information such as how many answers are correct or if they are all wrong. Additionally, the text does not state that you (can) pick A,B,C or D with the same probability (it only says "at random" but that does not mean anything) because the percentages may affect you. Therefore it is not a mathematical question of probability and thus you can argument that all probalities 0-100% can be correct. Instead it's a question to fool you and to create a discussion and I guess it will always be successful.
"Falls das Resultat nicht einfach nur dermassen gut aussieht, sollten Sie nochmal von vorn anfangen..." - Manual Check out my new game: Pogostuck: Rage With Your Friends
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