So what's the solution?

>>733058562
>asking /b/ to do your math homework for you
Graduate high school on your own accord you underaged faggot, we aren't here to do your HW for you

D and 3 are you stupid?

>>733058562
All four: any one of the cards could theoretically break the rule, so you must check all of them.

D and 7.

>>733059172
What if the F has a 3 on the other side? Then the rule would be proven incorrect.

All 4. We need to check that the RULE upholds.

Check that D has a 3 on the other side.

Check that F does not have a 3 or a D on the other side.

Check that 3 has a D on the other side.

Check that 7 does not have a 3 or a D on the other side.

Checkmate faggots. THIS IS THE ONLY TRUE ANSWER. STOP POSTING.

>>733059289
It doesn't say that 3 has to have D, only that D has to have a 3, so you need to check D, 3 and 7

>>733058562
Just 1 card. Either the D or the 3

All other answers stated here are false. And most likely from austismo kids

>>733059289
You could have just said that >>733058973 is right. Or /threaded him.

>>733059242
there's no rule against F having a 3 on the other side. It never says all 3s have a D, just that all Ds have a 3

>>733059356
>rule clearly states what is on both sides
>now what is on one side
Which is why all cards must be checked.

>>733059356
The rule implies it goes both ways. Cards have two faces. If it has a D on one side, then it has a 3 on the other. This means if there is a 3 on one side then, there is a D on the other. Shut the fuck up.

>>733058973
you have to verify that all four break the rule to assert that the rule is infact inaccurate? No, one accuracy is total inaccuracy (for this)

>>733059501
the rule implies nothing. it's parameters are clearly set, no more, no less

>>733058562
2, the "d" and the "7".

>>733059289
Can we sage and report this thread now?

>>733058973
This. Schrodinger's numbers/ letters

>>733059574
It asks to see whether the rule holds. Stop trying to be smart. Shut the fuck up.

>>733058973
There is no rule saying a 7 can't have a D on the other side.
The rule, as stated, is not reversible. Thus, any letter can have a 3 on the other side. It's just that all Ds must have a 3 on the other side.

Thus, you need only turn over the first and last one.
The first one to confirm there's a 3 on the other side and
The last one to confirm there's no D on the other side.

You need not turn the third one over because it could have any letter on the other side.

You fucking retards. It's D and 7. D to make sure it has a 3 on the other side and 7 to make sure it doesn't have a D on the other side. Everything else is irrelevant.

>>733059652
IT'S ASKING TO SEE WHETHER THE RULE RULE RULE RULE RULE UPHOLDS.

YOU GUYS ARE SO FUCKING RETARDED

>>733059501
The rule states:
if (sideOne="D")
Then
sideTwo="3"

it says nothing about the reverse

>>733059679
Wrong.

See >>733059289

>>733058973
you're retarded

>>733059722
Yes, and I did just that.

>>733059735
Cards have two sides faggot. If on one side it has a D, then it has a 3 on the other side. This means that if it has a 3, then it had a D on the other side.

You are fucking retarded. Stop posting.

6/10 if bait

>>733059289
You need to confirm the rule, not the premise. The F can't have a D on the other side. Cards have a letter on one side and a number on the other.

>>733059763
no, you are wrong, it doesn't say all cards with a three on one side have d's on the other, only that all cards with "d" on one side have a three on the other. also, the other steps in that solution are trying to prove the premise, which is true by definition so they are pointless and not even answering the question.

>>733059855
Yes. You would still need to check all 4 cards.

Check that F doesn't have a 3. And check that 7 doesn't have a D.

The rule only state that if you have a D card, you necessary have a 3 on the other side.
Though, having a 3 doesn't mean you necessary have a D on the other side : any letter can produce a 3 (it's just mandatory if it's a D).
About the F, whatever the number on the other side, the rule will still be verified.
About the 7, it has to be turned to check if there's no D on the other side (since if there's a D, that card should be a 3).

My answer : 2 card - The D (check if it's a 3) and the 7 (check if that's not a D).

>>733059947
Yea it doesn't say that faggot. That is exactly what the question is trying to get us to prove.

How are you this retarded?

>>733060022
It says in ONE SIDE. it doesn't say on THIS SIDE. you are fucking retarded.

>>733058562
It's definitely all 4. You have to verify they all have a number on one side and a letter on the other. No reason to assume they all do, so you need to check them all. Obvz.

ITT: retards who have never taken fornal logic classes. The answer is two cards, the D card and the 7 card, because we only have one way relationship defined.

>>733060110
Your answer is right, but for the wrong reason.

It's asking use the check the RULE, not the PREMISE.

>>733059848
are you actually this retarded? rule states that all cards with a "d" on one side have a 3 on the other, but it doesn't say anything restricting "3" cards from having another letter. IE there can be 1c 2c 3c 4c 5c... but only 3d

2/10 if bait because this thread is entirely bait and actually retarded people.

>>733060143
Wrong.

ITT retards who think they are smart.

>>733059848
Goddamn you're stupid. A D must have a 3 on the other side. That's the only thing stated. A 3 can have a fucking Z, the F could have a 3 on the back, it doesn't matter, if there's not a D on the card, then the rule doesn't fucking apply.

>>733059972
only the second one matters, it doesnt say all 3 cards have to be d cards, only that all d cards have to have a 3 on the other side. there could be a 3 card with a g on the other side and that wouldn't break the rule.

>>733060180
on "ONE SIDE". Not on "THIS SIDE"

You should seriously consider killing yourself if you haven't done so.

>>733060100
So you're not able to read correctly ? I don't see any "THIS" anywhere.

>>733058562
1
D has to have 3 on the other side to be true, however 3 dose not need a D

>>733060279
on "ONE SIDE". Not on "THIS SIDE"

You should seriously consider killing yourself if you haven't done so.

>>733060048
my god the autism

>>733058562
Just the D
It's just the rule.
Doesn't state other cards cannot have a 3

>>733060143
and bait

>>733059360
Are you retarded or what?

>>733060110

It's not asking you to prove the premise, It's the set up for the question you just have to prove the rule so 2 of the cards are irrelevant lol.

>>733060338
...like... think about if you flip it over and theres a "c", that doesn't break the rule because it says nothing about restrictions on what number can be on the other side of a c card.

>>733058562
THE D AND THE 7 YOU FUCKING AUTISTS

>>733060358
and 7 to make sure there's not a d on the otherside

>>733059501
You're a fucking idiot, it's like a question about rectangles and squares. All squares are rectangles but not all rectangles are squares. It says the D has to have a 3,doesnt say that 3 is exclusively on D

D and 7 obviously

>>733060470
this thread is just autism/retards/bait

The D and the 7

>If it has D on one side it should have 3 on the other

But it doesn't say if it has 3 on one it should have D on the other.

So by flipping the D you see whether or not a 3 is on the other side and by flipping the 7 you confirm that there is no D on the other side.

Ignore the premise. The question asked, what is the minimum number of card need to be flipped to validate the RULE. Quite obvious. It's D as the rule was specific for D.

1st Card - Needs to be turned to make sure it has a 3 on the other side.

2nd Card - Doesn't have a D on it so doesn't matter what number is on the other side.

3rd Card - Doesn't matter what letter is on the other side. If it's D the rule is correct and if it's anything else it doesn't affect the rule.

4th Card - Have to turn to make sure It's a letter other than D since a D would make the rule false.

It's not that hard people get really fucking hostile instead of entertaining the idea they could be wrong lol.

>>733060664
&7
if the 7 has a d on the other side the rule would aslo be broken

>>733058562
D and 7 so two.
The rule only goes one way so if D is turned over and has a 3 rule is OK
If 7 is turned over and has a D, rule broken.

>>733060683
She's right

You're all retarded
Answer is 3 cards. D, F and 7
You don't care what's on the other side of the 3.

>>733059501
You are fucking stupid. And you're the worst kind of imbecile too: The kind that thinks too highly of themselves. Shut your stupid ass up

Why are you all arguing this is a known problem
https://en.m.wikipedia.org/wiki/Wason_selection_task

>>733060851
The rule goes one way. The F doesn't matter.

File: 012__5_.jpg (930KB, 2448x2448px) Image search: [Google]

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All 4.

We have to check that the RULE upholds. Not the premise.

The rule states that if a card has a D on ONE SIDE then it has a 3 on the OTHER side. This also means that cards with a 3 on ONE side have a D on the OTHER side. If you don't agree with this here, then you should stop what you are doing. Rethink your life. Go to your nearest state that sells weapons. Buy yourself a gun with hollow point rounds. Proceed to shoot yourself in the roof of your mouth.

Okay. So we have to check that the D has a 3 on the other side. So we flip D.

Now we must make sure that the 3 has a D in the other side. So we flip 3.

We are not done yet. Remember we have to check that the RULE holds (this is the essence of our question).

Do we need to flip card F? Yes, we do. Remember that if a card has a 3 on one side then it must have a D on the other? We need to make sure that card F does not have a 3 on the other side. Because we cannot have a card with a 3 on one side and an F on the other.

Do we need to flip card 7? Yes, we do. Remember that if a card has a D on one side then it must have a 3 on the other? We need to make sure that card 7 does not have D on the other side. Because we cannot have a card with a D on one side and a 7 on the other.

All 4. If you do not agree with this answer, just make sure I don't ever know you irl. I will castrate you and make sure your shitty retard genes don't taint us smart people genes.

No, you are overthinking it. The rule was straightforward. If one side is D the other must be 3. That is the rule. The question asked how many card/s need to be flipped to validate THIS RULE. The answe is obviously 1, that's D. The premise is irrelevant

>>733059172
Correct answer

>>733060943

How can you not see that you're adding an extra part to the rule that isn't there lol. It says If D then 3. Says nothing about If 3 then D.

File: 1480726056792.jpg (34KB, 400x300px) Image search: [Google]

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>>733058562
Just the D.

The RULE states that all D's had 3's, so the only card that could disprove the rule is D.

All cards have a number and a letter, that's the PREMISE. And the rule says nothing about the requirements of a card with a 3, only cards with a D.

First rule of word problems: READ IT

>>733058562
One. The rule doesn't make mention of any other letters or numbers, so F and 7 can be ignored, and it only says that D must have a 3 on the other side, not that 3 must always have a D on the other side, so the 3 can also be ignored.

>>733059289
This is literally the most incorrect answer.

>>733061016
You need to also flip the 7.
Reason being that if you have a D then you MUST have a 3 on the other side, so in order to check that there is no D on the other side of the 7 you flip it.

>>733059457
>rule clearly states what is on both sides
>of what is on the flip side of one digit

That is why you ignore every card that doesn't display that digit.

>>733061283
>>733061248
You have to check the 7 lol. The premise says it has a letter on the other side. If it's a D then the rule is false so you have to check..

>>733060943
If a bodypart is a thumb, it has to be a finger.
Your logic is: Shit, i clearly have 10 thumbs then. The answer is two (D 7)

>>733061399
No you don't. READ the question carefully.

>>733061399
The 7 is irrelevant, the rule only involves the back of 3s. It doesn't matter if there's a D an X or whatever on the other side of the 7.

>>733061473
>The premise says
The premise is just an assumption that you hold to be true. It doesn't matter if it actually is true, because it's not the rule. The rule, in the other hand, is a statement of truth, and must be verified.

The only way to falsify an "if X, then Y" statement ("if D, then 3") is by finding an instance of "X and not Y" ("D and not 3"). F and 7 are irrelevant, because these cards cannot combine a D and a 3.

>>733061655

You don't know if the rule is true... that's the whole point of the question lol. If the Rule is 100% true then you don't have to turn over any card to find out if it is or not lol.

>>733061639
>>733061547
IF A FUCKING CARD HAS A FUCKING D ON ONE SIDE, THEN IT HAS A MOTHERFUCKING 3 ON THE OTHER.

THIS FUCKING MEANS THAT A CARD THAT IS A D DOESN'T HAVE A 3 ON THE OTHER SIDE THEN THE RULE DOES NOT APPLY. SO YOU GO IN AND FLIP THAT MOTHERFUCKING 7 TO KNOW THAT D IS NOT THERE OTHERWISE THE WHOLE THING GOES TO SHIT. ARE YOU RETARDED?

>>733059360
This is the only accurate answer. This is a variation of the Wason selection task, which initially works with vowels and even numbers. Here you only have to check one set of possibles. Look it up.

>>733061829
No you literal idiot. The picture says to verify the RULE, not the fucking premise.

I swear to Jesus it's like you faggots can't even read.

>>733061829
>You don't know if the rule is true.
Exactly. That's why you have to verify it.

>>733059360
But any letter can be behind the 3, it doesn't matter. The rule is that there must be a 3 behind the D. This doesn't mean that every 3 has a D behind it. The answer is 2, D and 7

>>733061952
Yes... you have to verify if It's true or not by turning as few cards as possible based on the premise... I don't think you read what I said or the original problem lol.

>>733061866
Shouting doesn't make you right. The answer to the question was already given in the rule....

>>733062174
Are you this thick or are you trolling?
Either way you sound retarded.

>>733058562
if the rule would be a function it would without a doupt:

function rule(card){
if (card.letter == "D" && card.number!=3)return false;
return true;
}

card 1: card.letter=="D" so card.number is relevant

card 2: card.letter!="D" so card number is irrelevant since rule is true no mather what

card 3: card.number=="3" so card letter is irrelevant since rule is true no mather what

card 4: card.number!="3" so card.letter is relevant

So the Answer is 2 Cards need to be turned over. Card 1 & 4.

>>733062355
There's no 1 or 4 card.

>>733062328
No I'm afraid it is you who is retarded. The rule clearly stated if D then the other side must be 3. THAT'S IT NOTHING ELSE. Then the question asked which card needed to be flipped to verify it. It doesn't get any more obvious than that. Retard.

I hope you are just trolling.

>>733061016
This. It only asks to validate that rule. Either flip the D or the 3, not both, and the question is solved.

>>733062637
You just said it, you twat.
>if D then the other side must be 3
So if there is a number other than 3 on one side it must be checked that the other side is not a D.

Just FUCKING READ.

>>733062885
But it doesn't matter what's behind the 3, not every 3 has a D behind it

>>733062526
Should have mentioned that the cards are labeled 1-4 from left to right.

>>733062885
Not 3 as 3 could have another alphabet on the other side. Furthermore there was no explicit rule saying that the reverse is true. Only D is the right answer as the rule said if D then it must 3.

>>733062921
No dipshit. The rule never mentioned that the reverse is true. Only that if D then the other side must 3. Stop making an ass of yourself. Please

>>733063220
But if 7 has a D behind it doesn't that disprove the rule? Therefore don't you need to flip it in order to verify the rule still?

>>733058562
IF there is a D, THEN there must be a 3.
>flip first card, check if there is a 3
>rule doesn't apply to card 2 at all
>no matter what letter is on the other side of card 3, it follows the rule
>flip card 4 to make sure there is not a D on the other side.

>>733063327
At least think before using your anus to write whatever bullshit you are spewing right now.

Look, faggot. I will type slowly, because you read slowly.
If the 7 has a D on the other side, this clearly disproves the "if D => 3" rule. Any number different than 3 must be checked and so must be every card that has a D on it.

>>733063455
How? There is no mention that the rules holds true in reverse. you can flip 7 if you want but it's still irrelevant as the rule doesn't say if 7 the other side must be D. I think people are assuming that the reverse holds true. But there is no indication that the reverse rule is true. You can't make that assumption.

Find in page retard 18

>>733063747
You are beyond help. Please seek expert advise ASAP

>>733063849
It isn't reverse, it is the same rule. If there is a D then you MUST have the 3 on the other side.

The reverse would be if there is a 3 there MUST be D on the other side, which is nowhere implied by the guy whomst you are replying to.

>>733063964
When you can't disprove what I told, so you resort to this. Pretty pathetic.

Depends on if the rule is true or not.

If the rule is true then 2
If the rule is false then you can do it in 1

>>733064110
Then why would you flip the 7. it's irrelevant what's on the other side, as there is no rule for it and wastes the explicitly highlighted minimum card flip. Like I said. Please seek help.

Verify is ambiguous.

>>733061690
No, you have to flip the 7. If the 7 does have a D on the other side you then have an instance of X and not Y, thereby falsifying the rule.

>>733064548
I wrote a like a 200 word explanation and just threw it away, because I understood that it doesn't matter what I tell you, your whole way of approaching the problem is different and in this case wrong.

>>733062921
>if there's a letter, there must be a number
>therefore check the numbers

I'm not sure if you're retarded, or you didn't read. Either way, you're stupid as fuck.

>>733065326
Odd way of accepting ones failure. I'll accept it. But, you really should seek some help.

>>733065364
Again, I will not argue. You just simply seem to miss the point of the rule.

>>733065364
The premise is not nor in any way part of the rule. In fact it is in there as trap to catch a fucking retard like you.

>>733065440
You really are an idiot.

>If you flip the D and it doesn't have a 3 on the other side, the rule is false.

>If you flip the 7 and it does have a D on the other side, the rule is false.

You have to flip both the D and the 7 because either one of them can prove the rule false. The F and 3 cannot prove the rule false no matter what is on the other side of them so there is no need to flip them.

>>733058562
D and 7
what is this preschool

>>733065685
>The premise is not nor in any way part of the rule.
Yeah, that's what I've been saying.

>>733058562
you're all fucking wrong

The only thing the rule is stating is that if the card has a D on one side, it will have a 3 on the other side.

The only thing you need to do to check to see if that specific rule is correct is to check if the D card has a 3 on the other side. Whatever the other cards have on their other side doesn't matter because it doesn't apply to this specific rule.

1 Card. Card D.

>>733065915
I can't help someone who has failed at reading and understanding the question. Good luck in life. I'm sure you'll go far.

>>733058562
D and 7 are the only two cards that must be flipped to confirm.

D to confirm there is a 3, because all D's MUST have 3's.

No need to flip F, even if it has a 3, that does not break the rule. The rule specifically states that D's must have 3's, not that 3's must have D's.

For the same reason, no need to flip the 3. It doesn't matter what's on the back of it, because the rule doesn't dictate that a 3 has a D on the backside.

You must flip the 7 to confirm there is NOT a D on the back, as that would violate the rule. only a 1/26 chance, but if you're confirming it, you have to flip it.

So 2 cards: D and 7.

>>733058562
The holocaust.

>>733066114
you need to flip the 7 to make sure there's not a D on the back.

>>733065915
you're right, btw.

>>733066114
Again, wrong. If there is a D on the other side of the 7, then the rule is false so 2 cards, D and 7

>>733066114
You have to turn 7 also because if it has a D on the other side the rule fails

>>733066114
You also have to check the 7, as potentially, there could be a D on the other side, which breaks the rule

This is different from the case of the 3, as an example, as the rule only applies one way, but when calculating the inverse, that is, number to letter there is still a possibility of a violation of the rule

Tldr here is your u

>>733066114
This is what I've been saying all along. Unfortunately, there are dim-witted idiots here sayin it has to be 7 as well...

>>733058562
The rule is only specifically 3 or D. It doesn't say the others can't have either 3 or D as well.
2 ya fockers

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>>733058562
>>733059172

— because this corresponds to the instance of D and the instance of not 3

>>733066141
Oh, the irony.

>>733066336
Yes, you've been saying it all along, and you've been wrong all along. Lrn to logic.

>>733066502
Aaaaand in that case it's just one coz the rule only stands for D not 3. It doesn't say on the other side of the 3 there will be a D.

>>733066336
I agree with this guy. If this guy is wrong then the question is wrong.

>>733066505
Right, so D3 you mean

For retarded people that can't understand still... i translate it in your language.

I have 4 Phones.
1st one is samsung
2nd one is an iphone
3rd one is blue
4th one is white

i promise that every phones have a color (and i said i have 4 phones so colors are related to phones)
All of my samsung phones are blue.

I will be a liar only if :
1st phone is not blue
4th phone is a samsung

>>733066792
Why do you have so many phones? Are you rich? You can't relate to our language, fat cat

>>733066188
Aaaaaah yep.....it's definitely this

>>733066568
Not only have you failed to read and understand. You are now showing holes in your spelling. Please go back to primary school. Looks like you have missed some valuable education.

>>733066901
What if the 7 has a D on the other side?

No it says that if one side of a card has a D on it, the other side must have a 3 on it.

There's only two ways to prove this false, Look at a card with a D and flip it to find something other than a 3 or look at a card that has a number other than 3 and flip it to find a D.

Pretty sure we have to flip all 5 cards

>>733067067
Then the rule is false, which is why you have to flip it. Unfortunately morons like >>733066901
are too dense to understand that.

>>733066792
what kind of apps does the phones have? I dont understand?????

>>733067067
Read the question. It said to verify The RULE (not the premise but the rule). What does the rule say? If card D the other side must be 3. Can you show me where it says anything about 7? Furthermore the question added a caveat. It has to be done with minimum card flip. Thus the only valid card flip is D

>>733062083
What if the 3 had a number on the other side. The rule would be broken. You have to check it faggot

>>733067391
there could be a D on the back of the 7.

>>733067438
no, that would break the premise, but leave the rule unchallenged, hilariously.

Because D's have to have a 3, but 3's do NOT have to have a D.

>>733067391
But if the 7 has a D then the rule is false.

>>733067459
Don't waste your breath, he's incapable of understanding. Let him wallow in ignorance

You only have to turn 2 cards: The card with the D to check if it has a 3 on the other side and the card with 7 to see that is hasn't a D on the other side. There is no need to turn the card with the F or the 3 because it isn't stated that only the letter D has a 3. The only rule is: IF a card has a D on one side, then it has a 3 on the other side.

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>>733066755
card D & card NOT 3, ie; 7, anon

Most people get this wrong.....at first. The real test is if you can change your mind after someone tells you the answer.

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>>733066687

>>733058973
But if the third has a D, then the rule breaks. So you have to do the first, third, and last cards

D and 3 only have to exist on one card if there is a 3.
3 can exist on a card without D because if a card has 3 three there doesnt have to be a D on the other side.
We only need to turn the D over because the 3 can have anything on the back and the others dont really matter. I suppose we might have to turn other the others (but not the 3) because there might be a D on the back of those.

>>733070652
If the third card (the 3) has a D on the back it wont matter because the D on the back will exist with the 3 on the front

D&7

>>733058562
Technically, the prompt never specifically states that a 3 MUST have a D on the reverse side, only that a D must have a 3. It also never states that any digits are exclusive to their counterpart except D. Because of this we will only have to flip the D card, the F card and the 7.
> Whether or not the 3 has any non-D digit, the rule still stands, since we don't care if other letters also require a 3.
> If the F or 7 have D on the far side then the rule is broken.
> If D has anything other than 3 on the far side then the rule breaks

>>733059289
You don't need to check 3. It never said 3 was exclusive to do, only that it was implicit of D

>>733059172
this is the correct answer

>>733073063
Read the premise to see why
>If the F has a D on the far side then the rule is broken
cannot be possible

File: pool.png (90KB, 588x618px) Image search: [Google]

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something easier perhaps?

>>733074102
True. Then only the D and 7 must be checked

>>733074253
13+11+upside down 9

Card 1 2 and 4
The third card cant deny the rule
If theres a D on the other side the rule holds and if theres smth else on the other side the rule still holds

Only 1 2 and 4 can break the rule so u must check em all

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>>733074645
nailed it anon!

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>>733074253
>>733074645
>>733074945
get a room you 2

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>>733058562

>>733058765
someone's in a bad mood, oh no

>>733074735
If the F has a 3 on the back it doesn't break the rule.

>>733075547
If F has a D on the back it breaks the rule

>>733075974
No wait thats wrong dont mind me