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/sci/ - Science & Math

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6265237 No.6265237 [Reply] [Original]

>> No.6265245

B

>> No.6265251

>>6265237
B
25 + 25 = 50, also 0 is impossible

>> No.6265260

>>6265245
>>6265251
Actually it's a paradox.

>> No.6265267
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6265267

>>6265260
Correct. If the answer were B (50%), then there would be 25% chance of getting it right since 50% is only listed once. Therefore the answer is 25%, either A or D. But that would mean that you have a 50% chance of answering correctly with a random choice. And it continues from there.

>> No.6265276

>>6265260
Wrong.

>> No.6265281

>>6265276
For future posting, please provide a counterargument when telling someone "Wrong."

Now please elaborate

>> No.6265313

>>6265276
>Wrong.
Can't add shit to his explanation....
U REAL?

>> No.6265323

B, 50%

Almost all multiple choice questions have two answers that are obviously wrong, so you just consider them as not answers, then you pick at random from the two answers that don't seem as wrong as the other two.

>> No.6265326

>>6265323
What if it's extremely vague and you are unable to deduce which two are the most wrong?

>> No.6265337

This has been posted before and the answer was above me. Some master of probabilities practically wrote a dissertation about it.

>> No.6265572

>>6265237
The right answer is C, but only if it is the wrong answer.

>> No.6265573

>>6265323
>Almost all multiple choice questions have two answers that are obviously wrong
>Almost

Engineer/Physicist/Chemist/Pleb detected.

>> No.6265579
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6265579

"Sometimes the only winning move is not to play"
-Joshua

>> No.6265581

the answer is c because the answer is 75% but it isn't there so its c

>> No.6265584

>>6265581
but there's a 25% chance of chosing "C" by random...

>> No.6265587

>>6265581
also, 75% means 3 are right, and you say that only one is right, you are not thinking this through.

>> No.6265589

its 25% because 1/4 but there are 2 25% so it is 50%. add those and its 75% 3/4. its not there so its 0%

>> No.6265600
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6265600

>>6265579
Yes, but that's just wrong answers, this is best:

>> No.6265602

>>6265589
If it's 0% then C is the answer, if C is the answer you have 25% of chosing it at random, ergo C is wrong if it's right.

>> No.6265613

if the answer is c then there is still a 75% chance since there are 2 25% options

>> No.6265624

There's no right answer. It's a paradox. It's like >>6265600 , you can't even say that all of the answers are wrong (%0 of chosing it) because by saying they are all wrong you are proving one right. Yet they are.

>> No.6265646

the question isn't asking you to pick at random but see what say a random number generator from 1-4 would pick.

>> No.6265663

>>6265267
I agree. The only answer is "undetermined".

>> No.6265687
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6265687

Okay. Here is my explanation:

1. You are asked a multiple-choice question.
2. There are 4 options to choose from.
3. Normally, if each option was unique, you would have a 1/4 chance of getting the answer right.

This means that if we were to choose A or D it would not be correct because simply choosing that answer would change the probability by raising it to 50%.

Moreover, if we then chose B as the answer the probability for getting the correct answer would fall back down to 25% thus rendering our new conclusion wrong again.
HOWEVER: There is "ONE" key thing we need to consider here.
>The question is recursive. This means that the question does address itself but has no definitive subject it is addressing.

Think outside the boundary for a second:

1. Becuase we do not know the specific subject we are require to guess.
2. Because the number of replies to a vague question are virtually infinite. The probability of getting the correct answer is equal to:

>Lim (1/x)
x->∞
Another way we can think of this is 1/∞. The Limit is 0.

3. As you can see, the answer approaches zero but never reaches it. (This is important as it means that even though the limit is 0 there is still an infinitely small chance to get the answer correct!)

>The reasoning here is somewhat similar to the reasoning that .99999 = 1 is true but false at the same time.

4. THE CORRECT ANSWER IS ACTUALLY C (0%).

5. By answering C not only do you logically avoid the paradox but you also avoid the 25% probability jump back. In other words by answering C you just got the correct answer from an infinitely small chance to get it right.

> And THAT KIDS is why limits are important in math.

>> No.6265736

>>6265326
You're choosing an answer at random
Just assume you don't get to look at the answers

>> No.6265792

>>6265687
But you could randomly mark C.

>> No.6265804

>>6265237
If I pick the right one, then its 100%, so since the answer is not listed then its C 0%
>checkmate atheists

>> No.6265813

>>6265237
This question has no answer. None of the options can be right or wrong.

Unless you want to say it is a meta representation of another question.

Then you would have to know how many options you are allowed to pick from in the represented question.

Hidden variables

The answer then is any of these or none of these, a sort of superposition.

>> No.6265865

A or C
2[(1/4)^2]+1/4*1/2=0.25

>> No.6265889

assuming one of the four is correct:
1/4 for each choice in a normal situation
2 of the answers are the same
so
A&D: 25% (1/3)
B: 50% (1/3)
C: 0% (1/3)

>> No.6265896

yea it's 33% assuming there is a right answer in the selection

>> No.6265989

>>6265237

Since when can multiple choice have 2 of the same answer? The answer is A or D depending on which answer the professor labeled wrong and the % is 25.

>> No.6266116

>>6265687
Yes, but then your answer would no longer be correct the probablity would once again become 25%.

The approach I explained earlier is the only method of logically arriving at the correct answer while avoiding the paradoxes.

>> No.6266832

>>6265687
If C is the right answer, then the probability of chosing it at random between A, B, C, and D is 25%, if it's 25% then C is wrong. Paradox not avoided. Fail.

You might as well solve >>6265600 , if you chose A the answer was B, if you chose B it's not B, and if you say that neither A nor B ar correct, then B is correct. It's a paradox, you can't "solve" it. Deal with it.