This is a Self-Referential Aptitude Test, developed by James Propp, at UMass-Lowell.
Each question refers to one or more answers on a different question. You should open a separate document to take notes on your process of elimination. Consider not starting the quiz until you have all of the answers.
This thread in the JetPunk subreddit contains a video that outlines my path for solving this puzzle. If you don't want to know all of the answers, and how you might derive them, definitely don't watch it.
After many hours spread across two days and multiple excel sheets, I got all but two answers right (Q3 and Q5). I knew something was off, but I couldn't find the mistake until I looked at the answers. Now I'm angry at myself, because I had the wrong number of vowel-answers in mind due to an earlier draft and this confused me. Otherwise, I'd most probably would have gotten it. Still, it was very interesting and you have a nomination from me.
About an hour and 45 minutes later, I finally got it! Great Quiz! I always felt like I was making progress and then an answer wouldn't work and I'd be frustrated and have to essentially restart my thinking. Time well spent though lol.
Love it. Nominated. Technically got 19 out of 20 cause I accidentally clicked the wrong one on 16, but I did solve it. So happy that I didn't have to use the hints!
Same here! Q5, Q7, Q8 are far from trivial. Q7 says literally "I could be anything and Q8 could be X, Y, or Z". And Q5 was finally solved for me only because 4 options have been eliminated. On the other hand, it might be useful to mention that Q2 has the by far strongest impact on the solution --- this condition excludes in principle 2/5 of all possible options in this quiz!
In retro-perspective, I am convinced that the most economical start is the following: (0) Always apply the condition of Q2 whenever new information occurs. (1) Apply the condition of Q13. (2) Q20 is trivial. (3) Solve Q10+Q16. (4) Solve Q6+Q17. (5) Solve Q12 (check Q8 for support). (6) Q15 and then Q13 are now trivial. This start gives 8 solved questions without much thinking required. Afterwards the the step-by-step elimination process sets in.
Did you do some sort of fancy CSS? On desktop, the page width is greater (scroll all the way to the right), meaning that the navy blue at the bottom is cut off.
I figured out the answers before hitting "start" per the recommendations, and I wish I hadn't - I know I made it within an hour because I sent an email 45 minutes ago!
Then as I entered in the answers, I read them aloud and rolled my eyes! Lol.
Love this quiz. 20/20. Took me about 30 minutes with a Google Doc.
My favorite part was when the lightbulb went off for me on Question 12 and I realized it had to be A. Based on question 8, the total number of consonant answers had to be 12, 13, 14, 15, or 16.
If it was 13, it would be a prime number, but also an odd number. Can't be two valid answers.
If it was 15, it would be divisible by 5, but also an odd number.
If it was 16, it would be a perfect square, but also an even number.
So it had to be 12, or 14, meaning A (even) was the correct answer over B (odd).
So simple but so deceiving if you don't really examine it!
you say there can only be one valid answer for Q12 and I would tend to think the same but then the answer to Q8 is E which means any of Q7's answers are valid. So I don't think it necessarily applies.
It took me several hours, to make all calculations on a file, realized I was wrong once almost every question was answered, than I had to start all over again.
Once I had all the answers I started the time, which is why technically it took me less than two minutes.
PS
The second hint (about question #8) is very tricky, I had to ignore it to end up giving all the right answers.
I did it in 40 mins on the second try. The first try gave me a paradox by the time I reached question 8 which I could later locate to be caused by question 5. That's probably the weakest point of the quiz since that question can be answered with the same argumentation on why the number 1 is not a prime. I excluded E on 5 cause they're not different questions. Maybe it's possible to improve the wording there?
Finished this in 27:28....the third time through the timer. Used Excel to keep track of correct answers, eliminated answers, etc. Awesome quiz! My brain hurts.
If you're saying the 'answer' to question 10 is actually 'D', that would make the 'answer' to question 13 '15', which isn't the same as the answer to question 9.
The challenge I am trying to work out is how to give enough help to guide you in the right direction without just giving you the answer(s). I could do the latter, if you prefer, but I don't want to ruin it for you.
Maybe it would make more sense for you to help me understand your conclusions (which you are obviously attempting) and then I can move you toward or away from certain ideas. And on the questions you're mentioning, maybe say what you've eliminated. There is as much value sometimes in determining which answers can't be true as in which must be true. I will see what I can come up with based on what you said, so far.
WT2008: Shouldn't the answer to question 9 be "A", since the answer to question 10 is "A"?
damoz7: which isn't the same as the answer to question 9
Based on your questions so far, I am not clear on how you became certain of the answer to #9. What leads you (WT2008) to the conclusion that it should (or should not) match #10, or (damoz7) that it should (or should not) match #13? These are both rhetorical (encouraging to work these out) and actual (help me understand your logic).
The answer to question 10 is definitely A. Therefore, an answer of A for question 9 is true. The next question (after question 9) with the same answer as question 9 is question 10.
I would say that, at that point in the puzzle, an answer of A for question 9 still could be true, because #10 is A and you can't rule it out. Because #9 also has "D) 13" as a choice, and #13 is D, you can't rule that out either. Likewise, if B as not been eliminated from #11 on your board, or C from #12, or E from #14, those could be the next ones with the same answer.
The next question (after question 9) with the same answer as question 9 is question 10.
Or, to put it another way, the next question (after question 9) with the same potential answer as question 9 is question 10. But you don't yet know the answer to #9.
If this doesn't make a lightbulb go off, I would suggest looking at the relationship between #12, #13, and #15. And to get #12, #8 will help, if you have been able to eliminate things from there.
just making sure i had the right thought process for number 9 because i dont know how else you would do it. im also going to try to not spoil what the answer is. So because you find out that there is a set number of vowels and consonants as answers within the quiz, wouldn't that eliminate some of the very obvious answers on number 9 specifically? By that logic after you've found all of your vowels doesn't that eliminate A as an answer? Just making sure
Brilliant quiz! Taking your advice at the top, I tackled it offline at a leisurely pace over a few hours using a spreadsheet grid with coloured cells to help visualise the answer options. So my actual "timed quiz time" was only a few minutes as I had already worked it through beforehand. Really enjoyed completing this - thanks for creating it.
Great, that was fun!! I would change the title to 'self-referential quiz' or something.
By the way I disagree with the first hint: how do you know for sure the answer to number 5?! I don't think you can assume it's E because for example question 19 has 5 correct answers (but of course only one fits with all other clues) so similarly question 5 has E as an obviously correct answer but it doesn't mean it's the one you have to select.
The following gives an explanation for #5. Select this comment if you want a spoiler.
E must always be true to question #5 because #5 has the same answer as #5. Each question only has one answer, so that renders A thru D untrue. Therefore, we gain the additional insight that questions #1 - #4 cannot be E (otherwise, again, there would be more than one answer to #5).
I disagree with that logic, since the answer to Q8 is E, so any of the answers to Q7 are correct. I think in some of the questions multiple answers would logically make sense on their own, but contravene other conditions in other questions and therefore the answer to any of the questions can only be determined by considering its impact on answers from other questions.
That's incorrect. For Q5, if A, B, C, or D were correct, then E would also be correct. So it's apparent from the start that E is correct (given that each question can have only one correct answer).
Conversely, the options for Q19 are mutually exclusive - if A were correct, then B-D would be incorrect, and so on. Q19 does not have "five correct answers" - rather, all of Q19's five options look like they *might be correct*, and none can be ruled out until one proceeds through the quiz (and, in my case, it was the final answer that I worked out).
I don't agree. You're starting from the premise that "same as" = "is" (in Q5) and while I specifically considered the possibility that that was the intention, I felt it was such a weak basis for an answer on such an otherwise elegant quiz, it couldn't possibly be right. So E was the one answer that I considered not possible for Q5.
Starting from that point it is still possible to progress through the quiz and get most of the answers right, but a few problems ultimately come through at the end. Sort of ruined it for me.
This may be my favorite Jetpunk quiz! I did cheat in two minor ways. One, I checked my logic with questions 6 and 17 by ending the quiz and checking if I got them right (I did not get it right). Then I also had to look up a list of perfect squares because I was being dumb. That said, I love this quiz with a passion and would LOVE to see another one similar.
I realize this sounds like an incredibly arrogant comment, but I'm pretty sure my set of answers is correct, and I got 3, 6, 7, 11, 17, and 19 wrong.
The answers to all of those questions are B and D (except one, which is closely related), so it all revolves around an interpretation of questions 6 and 17. Unless I'm missing something, I'm pretty sure that you can reverse the answers to 6 and 17 and it still works, but it thereby forces you to change the answers to 3, 7, 11, and 19 to fit the new patterns.
In other words, is it possible that there are 2 unique sets of correct answers to this quiz?
I did the same as you, having got the the answers to questions 6 and 17 reversed (but this still works). Then it becomes impossible to solve, although I thought I had it at one point. How unsatisfying is that! Otherwise I'm sure I could have done it, no wonder it was so frustrating! Great quiz though, I do enjoy the logic puzzles.
No, the answer to Question 6 has to be D, which means 17 is B. If you got Question 2 right, you know that 6 and 7 have the same answer. The answer to 7 is D, which means the answer to 6 is D, which means the answer to 17 is B.
I think you are incorrect I am sorry to say. Yes, on their own Q6 and Q17 can be reversed but then it would contravene options on other questions. For example Q16 has to be D, so Q17 cannot be D (see Q2).
This quiz took me about an hour (literally the entire allowed time), but I managed to get a perfect score on my first try! In the first thirty minutes I had gotten most of the answers except for the A, B, and D counts which I kept mixing up. Then I decided to do the whole thing again from scratch and did it in the 20-30 minutes I had left! This was a very fun quiz!
I don't think it is the hardest quiz on Jetpunk. All capitals of the world from north to south for example is more difficult to complete in the timespan given. This takes a little time (offline) but is certainly do-able logically.
I did a mistake in my reasoning, I ended up with 4 answers for A and as much for A as for either D or E, D had already 6 and E had only 2, I gave up because I didn't have much time but it's pretty fun
But with 10 and 16, you know the answer to 16 is D. Question 2 tells you the ONLY consecutive identical answers is one of the pairs, which means that 17 CANNOT be D.
You've made your answer to 17 D, which means 16 and 17 are consecutive questions with identical answers, which violates question 2, which you said only 6 and 7 have consecutive identical answers
Great point! I read question 2 to be identical answers between two consecutive, but only from amongst the five pairs listed in the answer itself. I did dither on this point when working it out. It was like making question 2 puzzle-wide seemed almost too incredibly helpful for eliminating a bunch of answers :)
Great quiz!! Loved it! Printed out three copies to take notes on (with pencil - I'm old school). Took about two hours. Didn't look at hints. Then, when I was satisfied, started the quiz and got 20/20 in about 90 seconds.
I would amend the instructions, though. They say that each question refers to one or more answers on a different question. Question #20 is referred to by other question(s) but does not refer to any other questions.
One is that if I'm not mistaken, the answer to 6 and 17 could be interchangable and:
1. If B is selected for 6, 17 would be D, and then answer to 7 which is open-ended could also be decided as B, then the answer to 11 would be D.
2. If D is selected for 6, then then 17 would be B, then the answer to 7 which is open-ended could be decided as D, then the answer is 11 would be B.
Looks like depending on which answer is selected for 6-17 pair, the final results could change without changing the rest. Looks like the solution is not unique and both these combinations are possible.
Also, the answer to question 9 is really weird. The only way to solve this is based on answer being D, but technically A is also correct, right? I mean both 9 and 10 can have A as the answer!!
If somehow these two are addressed (or someone explains to me where I went wrong) this would be the best test on Jetpunk! :)
Nevermind, I figured it out. Question 2 mentions not each two consecutive answers could be the same. So 9 and 10 cannot have the same answer and 17 cannot be D, because it would be the same as 16. So yeah, the test is correct and I was wrong. What a great fantastic test! Thanks a lot for Sunday night entertaintment!
Although I found peculiar Q7 and Q8, maybe I have misunderstood something here, but ...
Since the answer for 8 is E shouldn't be all the answers in Q7 correct?
It could be 7-A 8-E (four apart), 7-B 8-E (three apart), 7-C 8-E (two apart), 7-D 8-E (one apart), 7-E 8-E (the same). So the answer for 7 should be all of the above or something.
Why is 7 D then? Only to fit to the other numbers?
Yes, D is the only one that fits the other conditions in the quiz caused by the other questions/answers. There are several questions where multiple answers would work if you look at the question alone without reference to the rest of the quiz.
Spent 1.5 hours coming up with a solution, realizing just before submitting it wasn't quite right. Then I spent an additional 2.5 hours with an extremely methodical approach, after which I confidently submitted my answer. Only to find out too late I accidently copied one single answer wrong. After 4 hours of mental Olympics, 19/20. RIP, at least I'm 100% in my heart
I really enjoyed this. I do have a problem with question 5 however. Based on some of the comments, it is clear some people are reading it as "the answer to this question is the same as the answer to question X, but not the other 4", whereas it should be possible to also be the same as the answer to other questions too (kind of like 19 where all the answers are correct on their own).
As all answers to question 7 could be correct if the answer to Q8 is E (and it is), I did not make any assumptions from question 5 and this was almost the last question I came to a definitive answer to.
Dang you weren’t kidding. This was a challenge. I had to refresh because I took a bit more than an hour, but I solved it without any hints and I’ve never felt prouder to get 100% on a Jetpunk quiz. There are a lot of complex sequences of if/then scenarios required to figure it out. Definitely my favorite quiz on the site and one of my favorite logic puzzles ever, would recommend it to anyone who has a couple hours to spare.
That was great fun, and I was very happy to get them all right! A few wrong turns along the way but fortunately none of them required a complete restart. Thanks @mightythor!
We seem to have lost the ability to color fonts to match the background. I tried style="color: #404858;" and style="color: transparent;", but they aren't working. I am guessing the CSS is overriding it.
I got them all in almost an hour on the nose. Did it with pen and paper and no distractions. I actually clicked two of the wrongs boxes when converting my work from paper to computer (so many Bs and Ds!), but the quiz is solvable for sure. Great fun. General tip is to treat every single thing you see--every question, every answer letter, and every number--as a hint.
This was really clever, especially 6 and 7, which was hilarious! I'm not sure how you made this, this is insanely well done!
I'm a little bitter though since I only missed #11 which threw me off when finding #14/#18/#19. I ended up using deductive reasoning to get them right anyhow, but I only got 19/20... I'm not redoing the quiz for getting a score that's 1 higher, though.
I am really curious at your thought process when creating that type of quizz. Could you please explain briefly how you do it?
Got it right on my second try, figuring out my solution could not work after 30 min on my first attempt must have been one of the most frustrating moments of my life :-)
Inspired from this quiz, I ended up creating a quiz series like this. My technique was to start by setting up questions that can lead you to an answer (in some cases, I don't even have the question decided when I choose the answer). After that, I can use the implications of that answer to lead to another answer, and repeat until I finish. Usually the final answer ends up being something that is useless like "What is this question's answer?"
Because I apparently don't have anything better to do on a Friday night, I put together a full walkthrough! You can view it in Google Docs here. I made it as concise and efficient as I could, but, uh, it's still pretty complicated. I hope it's helpful to anyone who needs it!
I think the logic for #9 on pass three is sus -- "meaning the answer to question 11 couldn't be B". We know it is because we know the answer, but why, at the point, couldn't 11 not being B be valid? Tell me if you disagree.
The idea is to read the questions and determine what conclusions you can draw about each one. As you are able to draw conclusions on each question, then conclusions about other questions become apparent (this does not necessarily happen in numerical order).
This is where keeping a separate document can be helpful to keep track of your thinking.
If you are lost, there are hints at the top of the comments to help you. If you are still not having fun, there is a video (linked at top of comments) I put together describing how I solved it.
Very clever! I wonder how one creates a quiz like this. Like, how do people come up with these complicated intertwined hints that makes it difficult without being impossible. It took me some time, but I got it all in the end.
I created a quiz series like this. My technique was to set up 2-4 questions that give you enough information for a start. After that, I work off of that. I then try to repeat the process with the answer found imply with other answers.
I think it's more than fair to call this the "HQ on JP". On most quizzes, it's possible to get 100% on the first pass, almost all others on the second pass. There are a small number that require insane rote memorization and then effort for a hour (e.g. the "all subdivisions" variety), and others that require several attempts to ingrain muscle memory (e.g. 100 wpm typing, at least in my case), but no single one requires as many neurons as this one. Well done.
(side note for QM: I wish there was a way to eliminate/DQ the 50 or 60 quizzes where it's obvious that many people cheat -- e.g. an obscure list of 200, where 15% of takers get 100% correct. Just sayin').
I don't think "Hardest Quiz on JetPunk" is meant to be entirely literal, as it's always possible to make a quiz that has no hints and really random combination of letters as the only type-ins.
You need to consider all the other questions, in particular there's a question asking which is the only odd numbered question where the answer is A. If you've already found a different odd numbered question where the answer is A then it's impossible for question 9 to be A.
If I could read and understand English properly I would have got 20/20 the first time with a touch of assistance, stupid brain seeing proceeding and not preceding but giving up and doing it anyways when I still thought something did not add up.
WOW! So beautiful! I really enjoyed it, thank you!
I think I haven't used info contained in question+answer number 7: I only used it as a check, at the end. Is it possible that there was redundant information? (Just a question, not complaining of course!)
B is incorrect because Question 1 is "the first question with B on its answer" if you select B , then 2nd question's answer is B , but you selected the first B in the 1st question so its wrong.
I did it in sixteen minutes with the aid of an excel spreadsheet. I somehow got number 3 wrong but nothing else and I’m not sure how that works with all the vowel and consonant questions, but I’ll take it!
Edit: Looking at the spreadsheet, I realized I had it right on there and entered it wrong.
This comment contains hints. Select to see them (not sure about mobile).
These are not comprehensive.
#5 and #20 can each be answered without looking at any other question
Looking at #10 and #16 will give you the answers to both.
Looking at #6 and #17 will allow you to eliminate answers from each. #2 will clarify them.
Reading #7 will eliminate answers from #8. I am not saying you will be able to answer #7.
Use #3, #4 and #8, together.
Those will also help you answer #12, #15, and #13.
Knowing #13, allows you to eliminate answers from several questions.
#2 is your friend. Consider its implications to will help you eliminate answers on many questions .
You know how many questions are on the quiz, and which ones are vowels or consonants.
I probably will put together a comprehensive solution and post it on reddit.
I just read the hints, and I can't agree, in fact Q5 was one of the last ones I could answer, same qith Q7 & Q8
Sorry if it didn't help.
Solve the Questions that are opposites, or have an easy to determine answer first i.e, 20, 10,16,17,6,5.
Make Assumptions and eliminate that way.
KEEP TRACK OF THE NUMBER OF EACH ANSWER YOU HAVE!!!
Then as I entered in the answers, I read them aloud and rolled my eyes! Lol.
Well done!!
My favorite part was when the lightbulb went off for me on Question 12 and I realized it had to be A. Based on question 8, the total number of consonant answers had to be 12, 13, 14, 15, or 16.
If it was 13, it would be a prime number, but also an odd number. Can't be two valid answers.
If it was 15, it would be divisible by 5, but also an odd number.
If it was 16, it would be a perfect square, but also an even number.
So it had to be 12, or 14, meaning A (even) was the correct answer over B (odd).
So simple but so deceiving if you don't really examine it!
Once I had all the answers I started the time, which is why technically it took me less than two minutes.
PS
The second hint (about question #8) is very tricky, I had to ignore it to end up giving all the right answers.
Maybe it would make more sense for you to help me understand your conclusions (which you are obviously attempting) and then I can move you toward or away from certain ideas. And on the questions you're mentioning, maybe say what you've eliminated. There is as much value sometimes in determining which answers can't be true as in which must be true. I will see what I can come up with based on what you said, so far.
WT2008: Shouldn't the answer to question 9 be "A", since the answer to question 10 is "A"?
damoz7: which isn't the same as the answer to question 9
Based on your questions so far, I am not clear on how you became certain of the answer to #9. What leads you (WT2008) to the conclusion that it should (or should not) match #10, or (damoz7) that it should (or should not) match #13? These are both rhetorical (encouraging to work these out) and actual (help me understand your logic).
Is there something we're missing in that logic?
Now I'm with you.
Therefore, an answer of A for question 9 is true
I would say that, at that point in the puzzle, an answer of A for question 9 still could be true, because #10 is A and you can't rule it out. Because #9 also has "D) 13" as a choice, and #13 is D, you can't rule that out either. Likewise, if B as not been eliminated from #11 on your board, or C from #12, or E from #14, those could be the next ones with the same answer.
The next question (after question 9) with the same answer as question 9 is question 10.
Or, to put it another way, the next question (after question 9) with the same potential answer as question 9 is question 10. But you don't yet know the answer to #9.
If this doesn't make a lightbulb go off, I would suggest looking at the relationship between #12, #13, and #15. And to get #12, #8 will help, if you have been able to eliminate things from there.
I still think that since both A and D could be true for Q9, the wording of Q9, in particular the word 'next', logically should make its answer A.
Great quiz though, don't get me wrong.
By the way I disagree with the first hint: how do you know for sure the answer to number 5?! I don't think you can assume it's E because for example question 19 has 5 correct answers (but of course only one fits with all other clues) so similarly question 5 has E as an obviously correct answer but it doesn't mean it's the one you have to select.
E must always be true to question #5 because #5 has the same answer as #5. Each question only has one answer, so that renders A thru D untrue. Therefore, we gain the additional insight that questions #1 - #4 cannot be E (otherwise, again, there would be more than one answer to #5).
Conversely, the options for Q19 are mutually exclusive - if A were correct, then B-D would be incorrect, and so on. Q19 does not have "five correct answers" - rather, all of Q19's five options look like they *might be correct*, and none can be ruled out until one proceeds through the quiz (and, in my case, it was the final answer that I worked out).
Starting from that point it is still possible to progress through the quiz and get most of the answers right, but a few problems ultimately come through at the end. Sort of ruined it for me.
"Same as" does not equal "is". That is bad logic!
Funny thing, though, I forgot to put most of the answers after solving it on a piece of paper...
The answers to all of those questions are B and D (except one, which is closely related), so it all revolves around an interpretation of questions 6 and 17. Unless I'm missing something, I'm pretty sure that you can reverse the answers to 6 and 17 and it still works, but it thereby forces you to change the answers to 3, 7, 11, and 19 to fit the new patterns.
In other words, is it possible that there are 2 unique sets of correct answers to this quiz?
It took me around 1 hour and a half while writing all the process.
The quiz was really hard. I cheated a bit on second try as I did know what the right answers of the first two questions were.
If you take their test, they don't actually give you a score, just whether you get in or not.
regarding the 4 that I got wrong:
Questions 6 and 17 are identical; therefore their answers can be swapped.
6 Ans: D --> B
17 Ans: B --> D
Changing 6 to a B, would change 7 from a D to a B per question 2.
7 Ans: D --> B
And having two more B's prior to 11 would change 11's answer from a B to a D
11 Ans: B --> D
The above gives an even swap of B's for D's, so everything else seems to even out.
Other than the above, my only other hang up is the use of the word "next" in question 9.
6) B
7) B
11) D
17) D
and rest 16 options were same.
This is also working fine without violating any other question.
Correct me if I am wrong.
You've made your answer to 17 D, which means 16 and 17 are consecutive questions with identical answers, which violates question 2, which you said only 6 and 7 have consecutive identical answers
I would amend the instructions, though. They say that each question refers to one or more answers on a different question. Question #20 is referred to by other question(s) but does not refer to any other questions.
One is that if I'm not mistaken, the answer to 6 and 17 could be interchangable and:
1. If B is selected for 6, 17 would be D, and then answer to 7 which is open-ended could also be decided as B, then the answer to 11 would be D.
2. If D is selected for 6, then then 17 would be B, then the answer to 7 which is open-ended could be decided as D, then the answer is 11 would be B.
Looks like depending on which answer is selected for 6-17 pair, the final results could change without changing the rest. Looks like the solution is not unique and both these combinations are possible.
Also, the answer to question 9 is really weird. The only way to solve this is based on answer being D, but technically A is also correct, right? I mean both 9 and 10 can have A as the answer!!
If somehow these two are addressed (or someone explains to me where I went wrong) this would be the best test on Jetpunk! :)
Although I found peculiar Q7 and Q8, maybe I have misunderstood something here, but ...
Since the answer for 8 is E shouldn't be all the answers in Q7 correct?
It could be 7-A 8-E (four apart), 7-B 8-E (three apart), 7-C 8-E (two apart), 7-D 8-E (one apart), 7-E 8-E (the same). So the answer for 7 should be all of the above or something.
Why is 7 D then? Only to fit to the other numbers?
Come on.
First attempt: 14/20
Second attempt: 19/20
Thrid attempt: 20/20
Only took it just now, didn't realize how fun of a 40 minutes that would be.
I got 19/20 cause I apparently can't count, but it was amazing, nonetheless!
I'm a little bitter though since I only missed #11 which threw me off when finding #14/#18/#19. I ended up using deductive reasoning to get them right anyhow, but I only got 19/20... I'm not redoing the quiz for getting a score that's 1 higher, though.
Very well done, but I can't nominate it ;)
https://www.jetpunk.com/user-quizzes/1306568/the-impossible-logic-quiz
Got it right on my second try, figuring out my solution could not work after 30 min on my first attempt must have been one of the most frustrating moments of my life :-)
"This is a Self-Referential Aptitude Test, developed by James Propp, at UMass-Lowell."
I don't believe the source describes his process, but I wonder if an internet search might uncover it.
I dig it.
I think the logic for #9 on pass three is sus -- "meaning the answer to question 11 couldn't be B". We know it is because we know the answer, but why, at the point, couldn't 11 not being B be valid? Tell me if you disagree.
The idea is to read the questions and determine what conclusions you can draw about each one. As you are able to draw conclusions on each question, then conclusions about other questions become apparent (this does not necessarily happen in numerical order).
This is where keeping a separate document can be helpful to keep track of your thinking.
If you are lost, there are hints at the top of the comments to help you. If you are still not having fun, there is a video (linked at top of comments) I put together describing how I solved it.
(side note for QM: I wish there was a way to eliminate/DQ the 50 or 60 quizzes where it's obvious that many people cheat -- e.g. an obscure list of 200, where 15% of takers get 100% correct. Just sayin').
Really tricky quiz, I like the concept
I think I haven't used info contained in question+answer number 7: I only used it as a check, at the end. Is it possible that there was redundant information? (Just a question, not complaining of course!)
Guess I'll have to learn some more English before taking such a quiz again haha
finishing the quiz without outside help really feels good and satisfying, i love this quiz
5, 10, 16 and 20 are all easy, the rest? you're in for a long ride...
Edit: Looking at the spreadsheet, I realized I had it right on there and entered it wrong.
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what the f***?