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ITT: We do fun INDUCTION brain teasers (hat puzzles etc.)

Here is a common variation of the HAT PUZZLE. Unlike the TTT...
oomox
  04/26/26
everyone says 'red' at the same time
,.,.,:,,:,..,:::,...,:,.,..:.,:.::,.
  04/26/26
There isn't necessarily one of each color. Those are just th...
oomox
  04/26/26
...
scholarship
  04/26/26
wait I didn't read it
,.,.,:,,:,..,:::,...,:,.,..:.,:.::,.
  04/26/26
i'd look at the other guys hats and tell them what color the...
peeface
  04/26/26
You all guess at the same time. You don't have the hats yet ...
oomox
  04/26/26
so what does the 'strategizing' consist in? why isn't tellin...
,.,.,:,,:,..,:::,...,:,.,..:.,:.::,.
  04/26/26
Sorry I stealth edited that poast to clarify that you don't ...
oomox
  04/26/26
yeah i'd blurt it out as soon as she put them on their heads...
peeface
  04/26/26
the poasters would decide to make out with each other
Juan Eighty
  04/26/26
Cr and 180 you posted this at the same time as I posted &quo...
oomox
  04/26/26
to make sure you don't fight the hypo, the other poasters ar...
peeface
  04/26/26
...
oomox
  04/26/26
...
Mideast "Peace" "Agreement"
  04/27/26
...
futtbucker
  04/27/26
...
The Penis
  04/27/26
...
Mideast "Peace" "Agreement"
  04/27/26
i'm stumped. if you can't share the other 2 men's hat colors...
,.,.,:,,:,..,:::,...,:,.,..:.,:.::,.
  04/26/26
Well the idea is to come up with a way to guarantee one of y...
oomox
  04/26/26
but it's the same question, because you are looking for a st...
,.,.,:,,:,..,:::,...,:,.,..:.,:.::,.
  04/27/26
Well you're thinking in the right direction of like, aren't ...
oomox
  04/27/26
The blue/red button thought experiment is a clean logic prob...
niggerstomper59
  04/27/26
It could be made a clean logic problem if you specified that...
oomox
  04/27/26
No. The logic exists independently of whether any specific i...
niggerstomper59
  04/27/26
I might be unusually principled but I would rather be wrong ...
oomox
  04/27/26
I think this might be one of those irregular verbs with an i...
niggerstomper59
  04/27/26
We understand the logic. And if you're so great, try to solv...
oomox
  04/27/26
No, I don't think you do.
niggerstomper59
  04/27/26
...
Mideast "Peace" "Agreement"
  04/27/26
Your risk is way too high. Your projected outcome is skewed ...
Is it not the case
  04/27/26
I'm sure there are forums where everyone is like, "Obvi...
oomox
  04/27/26
All anyone has to do to not die is push red. It's safe, it's...
Is it not the case
  04/27/26
don't discourage them. after the holocaust of the blues we w...
peeface
  04/27/26
OP is a good egg worth saving
Is it not the case
  04/27/26
we'll put him last in the button line. once we show him ...
peeface
  04/27/26
🤞🏻
Is it not the case
  04/27/26
I was team blue for a moment until I realized that red is be...
Mideast "Peace" "Agreement"
  04/27/26
if we assume everyone is a rational actor the hypo is solved...
non stop prop op from israel
  04/27/26
It doesn't matter whether or not everyone is rational, it ju...
niggerstomper59
  04/27/26
I think the key issue is whether or not anyone is constraine...
Mideast "Peace" "Agreement"
  04/27/26
The universe doesn't care about your feelings. Blue is a dea...
Is it not the case
  04/27/26
just spit dip on the floor and call her a dumb whore and be ...
Cletus Van Damme
  04/27/26
This would seem to solve the problem.
niggerstomper59
  04/27/26
why does the op say "make out with you for five seconds...
Cletus Van Damme
  04/27/26
I'm a Liberal Artist imo. I'm a failure at STEM. I can't com...
Is it not the case
  04/27/26
180. A computer science background does help with this probl...
oomox
  04/27/26
I eagerly await the Big Reveal whereupon my mind will be blo...
Is it not the case
  04/27/26
this is one of those old puzzle book things where you sum up...
peeface
  04/27/26
I have no clue what you're saying, peeface tp
Is it not the case
  04/27/26
im gay
peeface
  04/27/26
Crrrrr SOLUTION: (Before you go on - if you have a CS back...
oomox
  04/27/26
As a 660 math SATmo this is way above my skill level
Is it not the case
  04/27/26
ok, I see it now, but I don't like it. this is worse than th...
,.,.,:,,:,..,:::,...,:,.,..:.,:.::,.
  04/27/26
thread title promised teasers (plural) but there's only 1 fo...
futtbucker
  04/27/26
The problem in the OP is difficult enough that I figured I'd...
oomox
  04/27/26
It's not that hard, you assign each color a number and each ...
futtbucker
  04/27/26
Yes but explain how exactly they guess their color based on ...
oomox
  04/27/26
you explained up thread already but the riddle was that only...
futtbucker
  04/27/26
[removed second hat question to use later in thread]
oomox
  04/27/26
any riddles that don't involve modulo division?
futtbucker
  04/27/26
NEXT (not "inductive," just a logic puzzle): This ...
oomox
  04/27/26
i'd turn one on, one off, and flick one off and on rapidly a...
peeface
  04/27/26
The solution is actually really close to that.
oomox
  04/27/26
can you touch the bulbs when examining them?
,.,.,:,,:,..,:::,...,:,.,..:.,:.::,.
  04/27/26
Yes you can examine them however you want
oomox
  04/27/26
so leave the switch on all night then flip it off at the las...
,.,.,:,,:,..,:::,...,:,.,..:.,:.::,.
  04/27/26
Crrrr! That's my favorite brainteaser. Next INDUCTION puzzle...
oomox
  04/27/26
1800000 look at me! i'm like Sherlock Holmes!
,.,.,:,,:,..,:::,...,:,.,..:.,:.::,.
  04/27/26
HYPO DID NOT SPECIFY THAT THEY ARE INCANDESCENT BULBS >:(...
non stop prop op from israel
  04/27/26
...
Juan Eighty
  04/27/26
again, i'm just going to tell the guys next to me what hats ...
peeface
  04/27/26
turns out you hate em all. reminds me of this old joke: ...
futtbucker
  04/27/26
that guy sounds like a real jerk!
peeface
  04/27/26
180
oomox
  04/27/26
Each poaster bets on a different total sum for the hats (0, ...
The Penis
  04/27/26
Correct except that technically the possibilities are 0-6 so...
oomox
  04/27/26
best explanation
VoteRepublican
  04/27/26
Who's the FOB trying to draft OP?
lfo
  04/27/26
NEXT QUESTION: We live in a strict matriarchy where every wo...
oomox
  04/27/26
every woman tallies up how many cheating men are in the king...
non stop prop op from israel
  04/27/26
I don’t think that works. For instance if I see 5 chea...
The Penis
  04/27/26
if every woman shares what they believe is the total number ...
non stop prop op from israel
  04/27/26
(guy who thinks like a lawyer)
rear naked choke
  04/27/26
I feel like thats fighting the hypo
The Penis
  04/27/26
i think you're "right" and the answer rear naked c...
non stop prop op from israel
  04/27/26
I think that's fair if we are treating the story as a realis...
The Penis
  04/27/26
cr. however those premises are explictly established by the ...
non stop prop op from israel
  04/27/26
by induction, hth
UN peacekeeper
  04/27/26
Assume 3 wives in the kingdom, exactly one of whom is cucked...
rear naked choke
  04/27/26
this works too and is probably the answer the hypo is seekin...
non stop prop op from israel
  04/27/26
yeah I think thats it. they wait the number of nights and al...
The Penis
  04/27/26
this seems to be built on a bigoted premise that all wives a...
peeface
  04/27/26


Poast new message in this thread



Reply Favorite

Date: April 26th, 2026 11:27 PM
Author: oomox

Here is a common variation of the HAT PUZZLE. Unlike the TTT blue/red button thought experiment, this is a LOGIC problem (not a feeling problem) that has a correct answer.

----

Three poasters are competing for a girl's attention. She's mildly receptive to their jestermaxxing and decides to give them a few minutes of attention. She has them all face each other and tells them: "I'm going to place a hat on each of your heads so that you can only see each other's, not your own. Each hat is either red, blue, or yellow (but there may be multiple or none of a given color). You will all guess at the same time. If any of you gets your hat color right, I'll make out with each of you for like 5 seconds. You may agree on a strategy beforehand and let me know when you're ready."

What strategy can they use to ensure that at least one of them guesses their own color correctly?

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845604)



Reply Favorite

Date: April 26th, 2026 11:30 PM
Author: ,.,.,:,,:,..,:::,...,:,.,..:.,:.::,.


everyone says 'red' at the same time

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845612)



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Date: April 26th, 2026 11:32 PM
Author: oomox

There isn't necessarily one of each color. Those are just the three possible colors.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845618)



Reply Favorite

Date: April 26th, 2026 11:31 PM
Author: scholarship



(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845614)



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Date: April 26th, 2026 11:32 PM
Author: ,.,.,:,,:,..,:::,...,:,.,..:.,:.::,.


wait I didn't read it

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845617)



Reply Favorite

Date: April 26th, 2026 11:33 PM
Author: peeface

i'd look at the other guys hats and tell them what color they are so they can answer correctly



(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845619)



Reply Favorite

Date: April 26th, 2026 11:33 PM
Author: oomox

You all guess at the same time. You don't have the hats yet when you're working out your strategy.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845622)



Reply Favorite

Date: April 26th, 2026 11:34 PM
Author: ,.,.,:,,:,..,:::,...,:,.,..:.,:.::,.


so what does the 'strategizing' consist in? why isn't telling him his hat color a strategy?

edit: oh, I see.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845623)



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Date: April 26th, 2026 11:37 PM
Author: oomox

Sorry I stealth edited that poast to clarify that you don't have the hats yet when you're agreeing on the strategy. Your task is to figure out how to guarantee that one of you gets it right when you all guess your colors simultaneously.

We're assuming they all want to win the kisses despite being POASTERS.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845630)



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Date: April 26th, 2026 11:36 PM
Author: peeface

yeah i'd blurt it out as soon as she put them on their heads before we all guess



(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845626)



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Date: April 26th, 2026 11:37 PM
Author: Juan Eighty

the poasters would decide to make out with each other

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845632)



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Date: April 26th, 2026 11:38 PM
Author: oomox

Cr and 180 you posted this at the same time as I posted "We're assuming they all want to win the kisses despite being POASTERS."

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845633)



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Date: April 26th, 2026 11:38 PM
Author: peeface

to make sure you don't fight the hypo, the other poasters are benzo and nyuug

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845634)



Reply Favorite

Date: April 26th, 2026 11:40 PM
Author: oomox



(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845641)



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Date: April 27th, 2026 10:37 AM
Author: Mideast "Peace" "Agreement" (No Future)



(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49846359)



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Date: April 27th, 2026 12:34 AM
Author: futtbucker



(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845721)



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Date: April 27th, 2026 3:44 AM
Author: The Penis



(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845879)



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Date: April 27th, 2026 10:36 AM
Author: Mideast "Peace" "Agreement" (No Future)



(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49846358)



Reply Favorite

Date: April 26th, 2026 11:49 PM
Author: ,.,.,:,,:,..,:::,...,:,.,..:.,:.::,.


i'm stumped. if you can't share the other 2 men's hat colors as part of a strategy, i don't see how it works.

just seeing the other two men's hat colors gives you no information about your own hat color since there are no rules governing color distribution (your hat color could still be Y, R, B regardless of the other men's colors).

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845658)



Reply Favorite

Date: April 26th, 2026 11:51 PM
Author: oomox

Well the idea is to come up with a way to guarantee one of you is correct. That's a slightly different question from "how does anyone know their own color?"

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845662)



Reply Favorite

Date: April 27th, 2026 12:05 AM
Author: ,.,.,:,,:,..,:::,...,:,.,..:.,:.::,.


but it's the same question, because you are looking for a strategy in which everyone gives Y/R/B as their own answer such that at least one is correct.

if the rule is "All or none of your hats could be Y/R/B in ANY combination regardless of the color of any other man's hat" then there can be no strategy because there is no rule. seeing the other hats provides no information as to the distribution of colors (no rule), other than the information about what the other 2 men's hat colors are, but this cannot be signaled as part of the strategy.

there is nothing we can all agree to say that guarantees one of us is right.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845686)



Reply Favorite

Date: April 27th, 2026 12:10 AM
Author: oomox

Well you're thinking in the right direction of like, aren't there too many possibilities to cover with the three guesses? But the problem space is smaller than it seems. It helps to assign numbers to the colors and start looking at the possibilities that way.

edit: "other than the information about what the other 2 men's hat colors are, but this cannot be signaled as part of the strategy." – They can't "signal" that information bc they're guessing simultaneously, but they can still incorporate it into their guesses

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845689)



Reply Favorite

Date: April 27th, 2026 12:14 AM
Author: niggerstomper59 (✅🍑)

The blue/red button thought experiment is a clean logic problem. You don't understand the logic and incorrectly think it is about feels and therefore you choose incorrectly, resulting in your death. Life is one big IQ test that you failed.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845692)



Reply Favorite

Date: April 27th, 2026 12:16 AM
Author: oomox

It could be made a clean logic problem if you specified that everyone on Earth can be assumed to be a rational actor. Then there's a correct answer, red.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845695)



Reply Favorite

Date: April 27th, 2026 12:18 AM
Author: niggerstomper59 (✅🍑)

No. The logic exists independently of whether any specific individual is a rational actor. With red, you always live. With blue, you only possibly live contingent on others' acts. You either understand this and live, thereby passing the IQ test, or you don't understand this and perhaps die, thereby failing the IQ test. You failed.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845696)



Reply Favorite

Date: April 27th, 2026 12:22 AM
Author: oomox

I might be unusually principled but I would rather be wrong about people and die trying to save us all than take the self-interested route and survive with blood on my hands. I think a lot of other people have that same intuition of "I would do the thing that can save everyone and assume half of people have similar morals to mine."

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845701)



Reply Favorite

Date: April 27th, 2026 12:27 AM
Author: niggerstomper59 (✅🍑)

I think this might be one of those irregular verbs with an irregular conjugation: I am principled, you don't understand the logic, he/she is a flaming retard.

As for the hysterical "self-interested route" and "blood on my hands", if everyone picks red, everyone survives, and so the only people with "blood on their hands" (lol) are dumbs with their own blood on their hands.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845706)



Reply Favorite

Date: April 27th, 2026 12:28 AM
Author: oomox

We understand the logic. And if you're so great, try to solve the hat puzzle!

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845712)



Reply Favorite

Date: April 27th, 2026 12:29 AM
Author: niggerstomper59 (✅🍑)

No, I don't think you do.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845714)



Reply Favorite

Date: April 27th, 2026 10:37 AM
Author: Mideast "Peace" "Agreement" (No Future)



(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49846362)



Reply Favorite

Date: April 27th, 2026 12:34 AM
Author: Is it not the case (Is it not the case)

Your risk is way too high. Your projected outcome is skewed towards your own demise based on values when most people are going to push red to save themselves and not have to worry about whether they'll be killed. You'll never get to 50% of people who are willing to risk dying for other people. Therefore 100% of red pushers live, 100% of blue pushers die, 100% of the time. It would be stupid to die for your beliefs. Save yourself!

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845720)



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Date: April 27th, 2026 12:41 AM
Author: oomox

I'm sure there are forums where everyone is like, "Obviously blue! Most people would just choose blue right? Since it's the right thing to do so we all survive?" but you guys are like the most cynical people on the internet and don't understand why anyone would risk their dEmIsE for the collective good

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845731)



Reply Favorite

Date: April 27th, 2026 12:45 AM
Author: Is it not the case (Is it not the case)

All anyone has to do to not die is push red. It's safe, it's secure. Blue is giga idealistic. In the end blue is foolish. If you pushed blue and were about to die you'd be thinking damn I should have pushed red. Boy that was stupid. You'll never get all the world to agree. Most people are unwilling to go down with the ship.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845742)



Reply Favorite

Date: April 27th, 2026 1:01 AM
Author: peeface

don't discourage them. after the holocaust of the blues we will finally be free of women, immigrants, and libs.



(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845758)



Reply Favorite

Date: April 27th, 2026 1:09 AM
Author: Is it not the case (Is it not the case)

OP is a good egg worth saving

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845769)



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Date: April 27th, 2026 1:11 AM
Author: peeface

we'll put him last in the button line.

once we show him the running tally and it is clear hitting the blue button won't save the blues from their well deserved genocide i assume he will press red.



(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845771)



Reply Favorite

Date: April 27th, 2026 1:18 AM
Author: Is it not the case (Is it not the case)

🤞🏻

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845775)



Reply Favorite

Date: April 27th, 2026 10:42 AM
Author: Mideast "Peace" "Agreement" (No Future)

I was team blue for a moment until I realized that red is better

I do think it matters if you stipulate whether kids are involved or if you limit it to people who are generally competent to consider the issue. If there’s lots of kids etc involved then you may figure that there’s enough blameless non rational actors we want to save that the ethical choice is to switch to blue and try to save them. If you’re assuming a game theory sterile abstraction where “everyone” is just rational actors then it’s absolutely red.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49846369)



Reply Favorite

Date: April 27th, 2026 10:59 AM
Author: non stop prop op from israel (gunneratttt)

if we assume everyone is a rational actor the hypo is solved with red. but we know that's not true.

empirically we can see many people choose blue and cannot be dissuaded. so we know in reality many people will choose blue.

the hypo requires universal participation, so "opting out" by choosing red is bullshit. you're still participating, team red interprets it as a moral choice. but we know from observation that many people will choose blue and that humans are perfect rational actors.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49846428)



Reply Favorite

Date: April 27th, 2026 12:14 PM
Author: niggerstomper59 (✅🍑)

It doesn't matter whether or not everyone is rational, it just matters what you do contingent on what everyone else is doing. You either definitely live, or you possibly die, irrespective of everyone else's rationality.

(Although if you want to express it in game theoretic terms, "red" is a strictly dominant strategy for everyone, therefore you should absolutely pick "red" in all circumstances, and "all pick red" is a dominant strategy equilibrium)

Life is a big IQ test. Those that pick "blue" fail.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49846645)



Reply Favorite

Date: April 27th, 2026 10:46 AM
Author: Mideast "Peace" "Agreement" (No Future)

I think the key issue is whether or not anyone is constrained from making the logical decision. If there are people who are going to push blue because of disability or they’re too young etc then I think there’s a moral argument that everyone has to choose blue (and you individually have to) because it will stop harm. That’s what the blue people are assuming—they start off with an assumption of “well some people will always choose blue” so we need to do the option that saves them. But if we are in pure sterile abstraction thought land, anyone whose initial impulse is blue is an idiot.

The funny thing is that these people are probably thinking along Kantian lines when they hit blue but 1) red is fully consistent with categorical imperative and 2) Kant’s political writings are explicit that you have to go with the world you want to see. If you’re a lib sitting and thinking “well maybe nobody should pick blue in the first instance but somebody will so I’ll save them and pick blue,” then it’s a self fulfilling prophecy.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49846384)



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Date: April 27th, 2026 10:50 AM
Author: Is it not the case (Is it not the case)

The universe doesn't care about your feelings. Blue is a death sentence. You subliminally want to die. You only have one option to survive, to push red. Women, children, the indigent. Their best hope is for someone to convince them to preserve themselves. All blue pushers are going to die 100% of the time. It's very tragic but we cannot risk our own lives to save everyone. It's black and white here. You either live or you kill yourself. The blue pill is that most people will choose life. Can't save everybody, unfortunately.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49846415)



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Date: April 27th, 2026 12:25 AM
Author: Cletus Van Damme

just spit dip on the floor and call her a dumb whore and be done with it. millennials are such fags.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845705)



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Date: April 27th, 2026 12:27 AM
Author: niggerstomper59 (✅🍑)

This would seem to solve the problem.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845707)



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Date: April 27th, 2026 12:33 AM
Author: Cletus Van Damme

why does the op say "make out with you for five seconds" like thats relevant

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845718)



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Date: April 27th, 2026 12:29 AM
Author: Is it not the case (Is it not the case)

I'm a Liberal Artist imo. I'm a failure at STEM. I can't compute logic problems. I guess I would just write a short story about the experience and double down on jestermaxxing.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845713)



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Date: April 27th, 2026 12:31 AM
Author: oomox

180. A computer science background does help with this problem. Like it uses a specific... operation you only really encounter in CS or advanced formal logic classes. But I'm sure non-STEM people can figure it out too.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845715)



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Date: April 27th, 2026 12:35 AM
Author: Is it not the case (Is it not the case)

I eagerly await the Big Reveal whereupon my mind will be blown.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845722)



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Date: April 27th, 2026 12:46 AM
Author: peeface

this is one of those old puzzle book things where you sum up the hats mod 3 to reach a target number that makes no intuitive sense at all but seems to work despite that if you brute force it out



(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845744)



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Date: April 27th, 2026 12:46 AM
Author: Is it not the case (Is it not the case)

I have no clue what you're saying, peeface tp

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845746)



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Date: April 27th, 2026 12:49 AM
Author: peeface

im gay

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845748)



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Date: April 27th, 2026 12:55 AM
Author: oomox

Crrrrr

SOLUTION:

(Before you go on - if you have a CS background and haven't figured it out, try again with the hint that it involves modular division.)

You assign each color a number 0, 1, or 2.

You reason that when the three hats' numbers are added up, the total 0-6 either:

- has no remainder when divided by 3 (total = 0, 3, or 6),

- has a remainder of 1 when divided by 3 (total = 1 or 4), or

- has a remainder of 2 when divided by 3 (total = 2 or 5)

So if you each cover one of those 3 possibilities, it's guaranteed that exactly one of you will be correct.

You assign one person to remainder 0, one to remainder 1, and one to remainder 2. Everyone adds up the other people's hats and guesses their hat such that the remainder of the total when divided by 3 is their assigned number.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845751)



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Date: April 27th, 2026 12:57 AM
Author: Is it not the case (Is it not the case)

As a 660 math SATmo this is way above my skill level

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845754)



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Date: April 27th, 2026 12:33 AM
Author: ,.,.,:,,:,..,:::,...,:,.,..:.,:.::,.


ok, I see it now, but I don't like it. this is worse than the Monty Hall problem.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845719)



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Date: April 27th, 2026 12:43 AM
Author: futtbucker

thread title promised teasers (plural) but there's only 1 followed by a subthread wasteland about another thread

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845737)



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Date: April 27th, 2026 12:44 AM
Author: oomox

The problem in the OP is difficult enough that I figured I'd let this one simmer for a while.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845740)



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Date: April 27th, 2026 12:50 AM
Author: futtbucker

It's not that hard, you assign each color a number and each poaster a target of 0, 1, 2 and then they add up the color they see and guess their own color based on that target. Two will be wrong and one will be right. Next?

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845749)



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Date: April 27th, 2026 1:02 AM
Author: oomox

Yes but explain how exactly they guess their color based on the sum of the other ones?

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845759)



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Date: April 27th, 2026 1:02 AM
Author: futtbucker

you explained up thread already but the riddle was that only one of them needs to do that, not all 3

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845760)



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Date: April 27th, 2026 1:20 AM
Author: oomox

[removed second hat question to use later in thread]

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845779)



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Date: April 27th, 2026 1:25 AM
Author: futtbucker

any riddles that don't involve modulo division?

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845780)



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Date: April 27th, 2026 1:42 AM
Author: oomox

NEXT (not "inductive," just a logic puzzle): This one involves some real-world assumptions you can ask about if you have questions. It's not quite as abstract as the hat ones.

I capture you and lock you in my dungeon as my slave. I treat you well and feed you and stuff and you enjoy spending time with me BUT you'd much rather be free to go back to your life. After a couple weeks I tell you that I'm going to give you a chance to escape. There are three switches in your cell that have always been a mystery to you. They're each marked "on" and "off" and you've kept them off after some initial experimentation.

I tell you that each switch connects to a lightbulb in my room directly above the dungeon. Each lightbulb is controlled by one switch. I tell you to do whatever you want with the switches until tomorrow morning, at which point I will take you upstairs to where the lightbulbs are. If you can figure out which switch corresponds to each lightbulb, I'll set you free.

What is your strategy to escape?

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845801)



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Date: April 27th, 2026 1:50 AM
Author: peeface

i'd turn one on, one off, and flick one off and on rapidly all night until the bulb burns out.



(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845813)



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Date: April 27th, 2026 1:55 AM
Author: oomox

The solution is actually really close to that.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845823)



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Date: April 27th, 2026 1:57 AM
Author: ,.,.,:,,:,..,:::,...,:,.,..:.,:.::,.


can you touch the bulbs when examining them?

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845827)



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Date: April 27th, 2026 1:57 AM
Author: oomox

Yes you can examine them however you want

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845828)



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Date: April 27th, 2026 1:58 AM
Author: ,.,.,:,,:,..,:::,...,:,.,..:.,:.::,.


so leave the switch on all night then flip it off at the last minute then examine the bulb for heat, is what I would do.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845829)



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Date: April 27th, 2026 2:16 AM
Author: oomox

Crrrr! That's my favorite brainteaser. Next INDUCTION puzzle here: https://xoxohth.com/thread.php?thread_id=5860893&forum_id=2#49845889

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845842)



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Date: April 27th, 2026 4:55 AM
Author: ,.,.,:,,:,..,:::,...,:,.,..:.,:.::,.


1800000

look at me! i'm like Sherlock Holmes!

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845899)



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Date: April 27th, 2026 10:47 AM
Author: non stop prop op from israel (gunneratttt)

HYPO DID NOT SPECIFY THAT THEY ARE INCANDESCENT BULBS >:(

sat here for 10 min trying to figure out if it could he solved in one night. this is BULLSHIT

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49846392)



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Date: April 27th, 2026 1:47 AM
Author: Juan Eighty



(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845809)



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Date: April 27th, 2026 1:33 AM
Author: peeface

again, i'm just going to tell the guys next to me what hats they have on



(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845785)



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Date: April 27th, 2026 1:34 AM
Author: futtbucker

turns out you hate em all. reminds me of this old joke:

"A bus full of ugly people unexpectedly crashes and kills everyone on board

Everyone shows up at the Gates of Heaven where God comes to meet them all Himself.

"Gee guys, I didn't intend for that to happen, I'm really sorry. I can't just resurrect you all, but to make up for it I'll grant you all one wish before I let you in."

The first person steps up and thinks for a moment. He says "You know God, I've been ugly all my life. For once I would like to know what it is like to be beautiful. Make me beautiful." So God snaps his fingers and it is so.

Everyone else starts chattering amongst themselves at such a brilliant idea. They all start wishing for the same thing.

God steps up to the last guy in line who is laying on his side laughing so hard he is crying. After several minutes of patiently waiting, God finally says "Now what in Heaven could be so funny boy?" The man stands up, wipes a tear from his eye and says "Make them all ugly again.""

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845786)



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Date: April 27th, 2026 1:37 AM
Author: peeface

that guy sounds like a real jerk!

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845793)



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Date: April 27th, 2026 1:43 AM
Author: oomox

180

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845803)



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Date: April 27th, 2026 3:43 AM
Author: The Penis

Each poaster bets on a different total sum for the hats (0, 1, or 2). Since those are the only three mathematical possibilities, one of them is legally obligated to be right. First time in bort history (maybe human history) that discrete maths gets used as a viable flirting strategy. Its a lot of mental labor for 5 seconds of glory but for a poaster thats a high return on investment

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845878)



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Date: April 27th, 2026 3:47 AM
Author: oomox

Correct except that technically the possibilities are 0-6 so you have to reduce that to 0, 1, 2 by starting over at 0 after 2.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845880)



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Date: April 27th, 2026 3:53 AM
Author: VoteRepublican (A true Chad!! where's your gf/wifew?)

best explanation

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845884)



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Date: April 27th, 2026 3:51 AM
Author: lfo

Who's the FOB trying to draft OP?

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845883)



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Date: April 27th, 2026 4:27 AM
Author: oomox

NEXT QUESTION: We live in a strict matriarchy where every woman has to pass a logic exam before she is allowed to marry and therefore all married women are perfect reasoners. Every woman knows (from observation) whether each man in the kingdom is faithful to his wife, EXCEPT for her own husband. It is taboo to tell a woman whether her husband is faithful, and no one has done it or would ever. Also, all of the women have great hearing and would definitely hear a gunshot from anywhere in the kingdom.

One day, the Queen tells everyone that she is observing male infidelity in the kingdom and wants to eradicate it. She says that women with cheating husbands are now legally required to shoot and kill their husbands at midnight after discovering the infidelity, starting that night.

How does each married woman know when/if to kill her husband?

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49845889)



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Date: April 27th, 2026 10:29 AM
Author: non stop prop op from israel (gunneratttt)

every woman tallies up how many cheating men are in the kingdom and writes down the numner. only two sums are possible: women with faithful husbands will write down N, the true total, and women with unfaithful husbands will write down N-1. thus, if you wrote down N-1 you can deduce your husband is unfaithful and shoot him at midnight.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49846346)



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Date: April 27th, 2026 11:48 AM
Author: The Penis

I don’t think that works. For instance if I see 5 cheating husbands, I don't know if N = 5 (my husband is faithful) or if N = 6 my husband is the 6th cheater). There has to be something that gives the first wife a reason to kill then the inductive chain starts but I’m having trouble intuiting it.

Wait it might be simpler than I was thinking. They might just count down the nights, and since they are all perfect reasoners they literally shoot at the same time on the last night.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49846584)



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Date: April 27th, 2026 11:58 AM
Author: non stop prop op from israel (gunneratttt)

if every woman shares what they believe is the total number lf cheating husbands, everyone with the lower number can deduce that their husband is unfaithful. they know there is at least one cheater because the queen announced it. and the two different sums confirm it.

let's use your numbers and say that there are 10 women total and 6 have unfaithful husbands. the 4 with faithful husbands will say there are 6 cheaters. the 6 with unfaithful husbands will say that there are 5 because they only can't see their own. this doesnt break the taboo because none of the wives are telling the other ones their husband is cheating. the numbers could all just be written anonymously too. the women with unfaithful husbands know the number the wrote down and can deduce their husband is the cheater.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49846599)



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Date: April 27th, 2026 12:02 PM
Author: rear naked choke

(guy who thinks like a lawyer)

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49846607)



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Date: April 27th, 2026 12:06 PM
Author: The Penis

I feel like thats fighting the hypo

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49846618)



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Date: April 27th, 2026 12:17 PM
Author: non stop prop op from israel (gunneratttt)

i think you're "right" and the answer rear naked choke came up with is the answer the question anticipates since it requires the perfect hearing component. but thats using meta-reasoning to figure out what the answer the drafter wanted is. i don't think my answer breaks the taboo, and chokes answer requires the women to track the number of nigjts passed, for no one to die for other reasons, and for shots to only occur for the specific purpose.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49846651)



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Date: April 27th, 2026 12:22 PM
Author: The Penis

I think that's fair if we are treating the story as a realistic social process. But these logic puzzles are always idealizing the environment. "Perfect reasoners" "Great Hearing" etc.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49846657)



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Date: April 27th, 2026 12:38 PM
Author: non stop prop op from israel (gunneratttt)

cr. however those premises are explictly established by the hypo. if you accept that this is a logic puzzle and make additional assumptions that weren't explicit (another is mine uses deductive reasoning and the thread says inductive), then that meta-reasoning gets you to the answer the question is searching for. but i still think mine works as drafted and better in a realistic scenario.

if this was on the LSAT and both mine and chokes answers were available, id select his because it's "best", i.e. what the drafter would think is best.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49846681)



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Date: April 27th, 2026 11:11 AM
Author: UN peacekeeper

by induction, hth

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49846473)



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Date: April 27th, 2026 11:58 AM
Author: rear naked choke

Assume 3 wives in the kingdom, exactly one of whom is cucked (but ofc doesn't know it). On day one, there are no murders because no wives know they are cucked. On day two, same. On day three, there has to be at least one murder bc queen said there is infidelity. Cuckwife observes that other two wives are not cucks. Cuckwife therefore deduces that she is the cuck and murders her husband on day three.

Solution is generalizable to greater populations and numbers of cucks.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49846595)



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Date: April 27th, 2026 12:11 PM
Author: non stop prop op from israel (gunneratttt)

this works too and is probably the answer the hypo is seeking. women are not compelled to root out the infidelity, so they wouldn't have to share the total number of cheaters like in my solution. but they would arive at the same conclusion after a certain number of nights (if we assume they're tracking them and have perfect memory).

in my solution with 10 women with 6 unfaithful husbands, the women who could see 5 cheaters would realize on the 6th night when the queen announces infidelity still remains that their husbands are cheaters and will shoot them after midnight. i was wondering where the perfect hearing component worked here. it's necessary for all the women to know whether murders occurred.

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49846636)



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Date: April 27th, 2026 12:12 PM
Author: The Penis

yeah I think thats it. they wait the number of nights and all shoot at the same time on night N given the number of cucks

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49846638)



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Date: April 27th, 2026 12:11 PM
Author: peeface

this seems to be built on a bigoted premise that all wives are women

(http://www.autoadmit.com/thread.php?thread_id=5860893&forum_id=2],#49846634)