If you choose an answer to this question at random, what is the chance you will be correct?
- Thread starter fiveub
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I'm guessing at random.
I am either wrong or right.
50/50
That's not quite how probability works
http://plus4chan.org/boards/jam/src/128512499475.jpgIf the answer if 50% then you only have a 25% chance of guessing right, which means the answer is 25%, which means you have a 50% chance of getting it right.
Man of Honour
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I reckon it's a 1 in 4 chance because A) 25% is a different answer to D) 25%.
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There are two correct answers, 2 out of 4 so 50% ?
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Soldato
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Your on the right lines, but don't forget you are more likely to pick the duplicate answer, since you are picking at random you have a higher chance to pick one of them.
Soldato
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Damn it 5UB, what have you done?!
I'm so confused.
I'm so confused.
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I don't see any 0.9r option.
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I was correct, ages ago.
Soldato
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Still waiting for the question to be posted.
33.3(recurring)% or 1/3?
You have a 25% chance of answering A,B,C or D if you choose one of them at random.
Given we don't know what question the answers relate to and there are only 3 potential answers then the chance of any of the answers being correct is 1/3.
Therefore
25% * 1/3
+
25% * 1/3
+
25% * 1/3
+
25% * 1/3
= 1/3 or 33.3(recurring)%
However, if the answers are related to the chance of getting this question correct then it becomes a mathematical paradox.
You have a 25% chance of answering A,B,C or D if you choose one of them at random.
Given we don't know what question the answers relate to and there are only 3 potential answers then the chance of any of the answers being correct is 1/3.
Therefore
25% * 1/3
+
25% * 1/3
+
25% * 1/3
+
25% * 1/3
= 1/3 or 33.3(recurring)%
However, if the answers are related to the chance of getting this question correct then it becomes a mathematical paradox.
Struggling to see how it can be anything other than 0% really.
The probability of picking an answer of 25% (A or D) is 50% - but since picking either A or D gives an answer of 25% this doesn't tally with the 50% chance of getting A or D.
It can't be B because there's a 25% chance to pick B which doesn't tally with the answer of 50% that B gives.
And it can't be C for the same reason - 25% chance to pick C which doesn't tally with the answer of 60% that B gives.
I predict the true answer will probably fry my brain though.
The probability of picking an answer of 25% (A or D) is 50% - but since picking either A or D gives an answer of 25% this doesn't tally with the 50% chance of getting A or D.
It can't be B because there's a 25% chance to pick B which doesn't tally with the answer of 50% that B gives.
And it can't be C for the same reason - 25% chance to pick C which doesn't tally with the answer of 60% that B gives.
I predict the true answer will probably fry my brain though.