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Board 8 > Probably old, but somebody wanna explain this to me? [Math]

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BFairfield
10/27/11 5:34:00 PM
#1:


external image

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JeffreyRaze
10/27/11 5:36:00 PM
#2:


THIS.
STATEMENT.
IS.
FALSE!

don'tthinkaboutitdon'tthinkaboutitdon'tthinkaboutit

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BlackMetalex
10/27/11 5:44:00 PM
#3:


It seems pretty clear that all of the answers are simply wrong. Assume the answer is 25%, if you pick a choice at random you have a 2/4=50% chance of getting the right answer, which contradicts the assumption that the answer is 25%. Assume the answer is 50%, if you pick a choice at random you have a 25% chance of getting the right answer, which contradicts the assumption that the answer is 50%. Same deal for 60%. Thus, all four listed answers are incorrect. I guess you could say the answer is 0%, since you'll never get the right answer with any of those four options.
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VintageGin
10/27/11 5:45:00 PM
#4:


Wow, I just saw this written on a whiteboard in lab around an hour ago.

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pjbasis
10/27/11 5:49:00 PM
#5:


From: BlackMetalex | #003
It seems pretty clear that all of the answers are simply wrong. Assume the answer is 25%, if you pick a choice at random you have a 2/4=50% chance of getting the right answer, which contradicts the assumption that the answer is 25%. Assume the answer is 50%, if you pick a choice at random you have a 25% chance of getting the right answer, which contradicts the assumption that the answer is 50%. Same deal for 60%. Thus, all four listed answers are incorrect. I guess you could say the answer is 0%, since you'll never get the right answer with any of those four options.


I like this.
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LeonhartFour
10/27/11 5:50:00 PM
#6:


If you're thinking about it, you're doing it wrong.

That defeats the purpose of choosing at random.

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foolmor0n
10/27/11 5:55:00 PM
#7:


There are 4 choices, 0 of which are right. 0/4 = 0%

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WhoopsyDaisy
10/28/11 6:55:00 PM
#8:


What if the 60% answer is changed to 0%?

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senorhousemouse
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Pondos
10/28/11 7:01:00 PM
#9:


The answer is C because choosing at random actually means choosing C

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ShadowHalo17
10/28/11 7:15:00 PM
#10:


From: JeffreyRaze | #002
THIS.
STATEMENT.
IS.
FALSE!

don'tthinkaboutitdon'tthinkaboutitdon'tthinkaboutit


Best.

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DeathChicken
10/28/11 7:19:00 PM
#11:


No, there is an elephant in the way

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3DSRage
10/28/11 7:25:00 PM
#12:


25%

because the correct answer is 50%

1/4 = 25%

owned
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3DSRage
10/28/11 7:29:00 PM
#13:


See, the 25% are not the answers to the problem, but they are the probability of choosing one out of four things at random. You clearly do not have 25% of picking 25%. Put you do have 25% of choosing 50% which is the chance you have of choosing 25%.
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WhoopsyDaisy
10/28/11 7:37:00 PM
#14:


so you're saying the probability you guess the correct answer is 25%. So the answer to the question is 25%. Which means the probability of guessing that answer is 50%. So the answer to the question is 50%. So the probability that you guess the correct answer is 25%.

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