Otherwise the one who stayed is the oddly weighted one. Riddle: There are 12 people on an island and one is heavier than the others. Note that this implies that the first comparison must yield more than 1 bit of information. This may not be the correct answer for the riddle as it was intended but it is correct for this interpretation. SPOILER ALERT! What is the arrow notation in the start of some lines in Vim? How to delete all UUID from fstab but not the UUID of boot filesystem. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. Create an account to follow your favorite communities and start taking part in conversations. What is the answer to the seesaw riddle? Press J to jump to the feed. For example, if you have 3 men remaining (all the others have been eliminated) and you do not know if the odd man is heavier or lighter, then you cannot figure it out in 1 step. Are you sure you want to create this branch? [10, 11, 12, 1] VS. [2, 3, 4, 5]. a) If 1,2,5,6,7 is heavier, then either 1 or 2 heavier, or 8 is lighter. I gave each of the 12 men a letter, A-L. Can You Solve the Brain Teaser of the 12 Men and a See-Saw? Just forget about them for a few minutes. Connect and share knowledge within a single location that is structured and easy to search. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. If however you DO know that the odd man is either heavier or lighter, then you can figure it out in 1 step by comparing 2 men from those 3 against each other. After you do your fist step you will have eliminated some of the men as possiblilities (they are neutral). Ackermann Function without Recursion or Stack. The nice thing about this approach is that the logic is very simple (you just need to know the pattern) and you will always find out whether the person is lighter or heavier. Weigh 9,10,11 against 1,2,3. Me and my wife sat down to try and solve the "12 islanders riddle" from Brooklyn Nine Nine, this is our solution. You must figure out which. Pardon the handwriting, its usually better. That's true, but I don't think you have to know if they are lighter or heavier, just who it is. (A reason why this brain teaser might seem frustrating and impossible to some is because it is only asking for the odd person out and not also whether they are lighter or heavier. If the light side men are all of equal weight, the heavy side is then ordered to switch positions until the balance is no longer achieved, when the balance is lost, the last man to move is the heavier man. Show Answer PREV NEXT by Mikhael Panju v1. heavier or slightly lighter. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. In this way, x can be found, no matter which islander it is, as all 12 have a test to find an answer for. It only takes a minute to sign up. The riddle 12 men live on an island. In step 3 place one unknown on each side. (seesaw measurement number 3), 2.B.2 if balanced Why do we kill some animals but not others? Learn more about Stack Overflow the company, and our products. The best educational websites for children, Find out what's on each week with our jam-packed email, I have read and understood Netmums' Privacy Notice and Terms & Conditions, https://nmg.netmums.com/header/activities/, https://www.netmums.com/esi/video/false/position:ATF, https://www.netmums.com/esi/mostactivechat/website/article. New comments cannot be posted and votes cannot be cast. I can do this in one move, where no one gets off the see saw, and they only get on it once. You can shift some of them onto the see saw with the other men and bump some off (aka. L: sit on the left, R: sit on the right, -: dont sit on the seesaw. You must use a see-saw to figure out whose weight is different, and you may only use the see-saw 3 times. Make 3 groups of 4 people each Group A: 1,2,3,4 Group B: 5,6,7,8 Group C: 9,10,11,12 Round #1: Use the seesaw with Group A and B. Eleven weigh exactly the same amount, but one of them is slightly lighter or heavier. Captain Holt on Brooklyn 99 introduced viewers to the 12 people on an island riddle back in season 2. So in principle, we should be able to solve the problem. (Second Use). Can a VGA monitor be connected to parallel port? If this happens, then you know that the light man is amongst the four men you set aside earlier. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. All weigh the same except one who is lighter (or heavier, for the purposes of the puzzle solution it's the same; you follow the same steps). Was Galileo expecting to see so many stars? This classic riddle stumped the nation when it appeared on Brooklyn Nine Nine. The seesaw will NOT be perfectly balanced. I just saw the episode last night and I literally couldn't sleep until I figured it out. Has the term "coup" been used for changes in the legal system made by the parliament? You must use a see-saw to figure out whose weight is different, and you may only use the see-saw 3 times. Another coin weighing puzzle. WRONG! The ice cube and the basketball have the same weight. 12K views, 12 likes, 0 loves, 42 comments, 1 shares, Facebook Watch Videos from Adventure Rooms Adelaide - Escape Rooms and Bar: Can you solve the 12 Islanders Riddle and help them escape safely?. seesaw: R1 L2 L3 L4 L1 S2 S3 S4 (heavy) You don't know if he is heavier or lighter, just that he is a different weight. Learn more. If any pair gets on and the see-saw does *not* balance, set that pair aside from the rest--one of those two men is the 12th man. 12 Islanders Teeter Totter Riddle There is an island with 12 islanders. Problem solved. 11 weigh exactly the same amount, but one of them is slightly lighter or heavier. Use the weight difference from step 1 to determine heavier lighter. Scenario Two, from your original 4x4 weighing: 2. (Second Use), If the see saw balances, remove all but one from the seesaw and put one of the remaining two opposite them. sideline: S1 S2 S3 S4. A seesaw is binary. The pattern for all islanders is below: person: A B C . Three measurements in all. Thus in principle we can get log227 bits from the three comparisons. You can only use it three times. Applications of super-mathematics to non-super mathematics. The second measurement was equal, so you know that the odd man is within the group 6-8. Use the {{3 remaining with known weight solution}} from solution 1a. c) If they are the same, then one of 3,4 is different. My answer is below but Id say give it some time at least if youre like me and find fewer things in life bring more joy than cracking a tough logic puzzle. Weapon damage assessment, or What hell have I unleashed? Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Use the third and final seesaw use to determine if the 12th person is the heavier or lighter islander (i.e. All of the islanders individually weigh exactly the same amount, except for one, who either weighs more or less than the other 11. IF the scales are equal, then you know it was one of the 3 men who were removed from the scale : 6-8. (Third Use), If the see saw is not balanced, remove one from each end. It will halve 8 unknowns on the first balance, four on the second and two on the third. 2150 Condos - West Tower Phase 2 I actually figured this out on my own this evening while out walking my dog. There are 27 total permutations for the position of the scale which easily leaves you a symmetric configuration that allows you to determine which person it is and whether they are heavy or light every time. ((, Please explain your claim that is was not asked properly. If they are the same, 8 is the one we are looking for (and lighter). If the weights are equal, then one of A2.4 is heavier; weigh A2 and A3. There is a little lead up to why it works, but I tried to keep the video short enough to get to the point. Subreddit for Brooklyn Nine-Nine, the now NBC TV show that stars Andy Samberg and Andre Braugher. There are 12 men on an island. Take 3 men from the group and measure against 3 neutral men from 1-8. If they are equal, A4 is heavier. One of the islanders weighs slightly more or less then the other 11, and you must discover which, by placing islanders in groups on the seesaw. Thus in principle we can get log 2 27 bits from the three comparisons. I believe it was in. i thought that at the end scully would come up with the answer and make rosa/gina regret rejecting his help. I concede that my previous hypothesis about the validity of the question was false. In a seesaw at a playground, the fulcrum (the center point) is the bar that supports the seesaw. Weigh the lighter of the 2 men against any other neutral man. There are 12 men on an island. A tag already exists with the provided branch name. Is it possible to measure 1 kilogram of sugar? Before that I didnt really get what you were doing. If these are equal, the different man is 12. 12 Islanders Riddle Puzzle from Brooklyn 99. Bottom line? If the seesaw balances we know that either 1 or 2 or 3 is oddly weighted. If not balanced, the one going down is heavy. rev2023.3.1.43268. If the seesaw reverses, ether 4 or 5 is the oddly weighted one. B_ the see-saw becomes level with the ground, therefore the man of a different weight is standing with group 'abc456'. b) If 1,2,5,6,7 is lighter, then one of 5,6,7 is different and lighter. Now put 7 on one end and 8 on the other. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Are there basic weighing puzzles requiring adaptive strategies? IF the scales are unequal, but the balance of weight changes (ie. {{3 remaining with known weight solution}} Since the weight is known, all you need to do is measure 2 men from the remaining 3 against each other. test all the cases: go test . Can you solve the classic 12 marbles riddle? The whole lighter OR heavier is the big monkey wrench here. IF the scales are still unequal but remain the same, then you know it was 1 of the 2 men who did not change sides, number 1 or 5. New comments cannot be posted and votes cannot be cast. That's not true. now compare R1 against a neutral islander (S1 for example). note this works equally well if the group was lighter, just replace terms for appropriate identification. now compare R2 and R3. Feel free to provide your own comment and I can delete this one. " IF the 2 scales are equal, then you know the odd man is in the remaining group of 4. There is an island with 12 islanders. 42 votes, 14 comments. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. sign in You must figure out which. There are 12 men on an island. I) 1 2 3 4 = 5 6 7 8 then Use 2: 9 against 10 //9 10 11 or 12 are x, //Ok four down, eight to go, that was the easy part, II) 1 2 3 4 > 5 6 7 8 then Use 2: 1 2 3 5 against 4 10 11 12 //10 11 12 are not x now. If they are equal then it is the one not being measured and he is heavier. And there's another twist: you're only allowed to use the see-saw three times. All of the islanders individually weigh exactly the same amount, except for one, who either weighs more or less than the other 11. Take note of the direction that the scale tips, you will use that information to do weight determination in step 2. Split the men into two(2) groups 'abcdef' and '123456'. Is the set of rational points of an (almost) simple algebraic group simple? Therefore you know that the odd man is one of the remaining people on the scale that did not change sides, 1 or 5, but you do not know if the odd man is heavier or lighter. Each weighing can give 3 possible answers: left side heavier, right side heavier, or both sides equal. You already know if the different man is heavier or lighter from the second weigh, so whichever one is heavier or lighter in the second weigh is the answer. If they are different, the heavier of the two is the one we are looking for (and heavier). The island has no scales but there is a see-saw. @Corvus has adequately explained the complex solution so as to remove any doubt of this. 11 weigh exactly the same amount, but one of them is slightly lighter or heavier. If the seesaw balances we know that either 1 or 2 or 3 is oddly weighted. See our massive list below, or chat to other parents in our forum. The seesaw will balance perfectly. There are 12 men on an island. And if they are, then weigh 9, 10, 11 vs 1, 2, and 3. Now put 7 on one end and 8 on the other. If they are equal, it is the remaining man not being measured. Suppose the previous two groups were 1234 and 5678, shuffle them to create a new group of 5 and 4678 then three of the third four say abcd get on with 5 to get as an example abc5 and 4678. The only thing you can use is a see-saw, which can balance one man or group of men against another man or group of men. How can you find out which islander is the one that has a different weight? The island has no scales but there is a see-saw. Questions: Is it ethical to cite a paper without fully understanding the math/methods, if the math is not relevant to why I am citing it? A_ the equilibrium of the see-saw remains unchanged, therefore the man of a different weight is now amongst group 'def123' or seesaw: L1 L2 L3 L4 R1 R2 R3 R4 Death by roo roo. 11 weigh exactly the same, but one of them is slightly lighter or heavier. Take note of whether it is heavier or lighter. Connect and share knowledge within a single location that is structured and easy to search. There are 12 men on an island. That person is the heavier (or lighter). It only takes a minute to sign up. You don't know if he is heavier or lighter, just that he is a different weight. No Scenarios, No Cases, Just The Simple Answer.Instagram: https://www.instagram.com/lifeprojxFacebook: https://www.facebook.com/lifeprojx neutral islander to figure out if it is heavy or light. -v, 1 split the 12 islanders into three groups Say as example 1234 were lighter. In either scenario, the steps are basically the same. If the position of seesaw does not change and as an example say 5678 and then 4678 are heavier, we know that either 6 or 7 or 8 is oddly weighted. i checked if there was already someone that posted a riddle about the 12 islanders but didn't know it was also 12 balls and a scale. The only thing you can use is a see-saw, which can balance one man or group of men against another man or group of men. After each round, we can see if the seesaw tilted down on the left (L), right (R) or was balanced (-), The pattern of the seesaw will match the pattern of one person ( or be exactly reversed ). 11 weigh exactly the same amount, but one of them is slightly lighter or heavier. The exciting catch? Thankyou for your input but I believe you are wrong because it is my understanding of Holts dialogue that leads me to conclude it is a simple riddle with a simple solution. You can figure out both in three steps. Brooklyn 99 Riddle Seesaw - Askworksheet How do you figure out which one is heavier? If they are the same, 7 is different (and lighter). New post because the last one got too old. Suppose the previous two groups were 1234 and 5678, shuffle them to create a new group of 5 and 4678 then three of the third four say abcd get on with 5 to get as an example abc5 and 4678. If 9 and 10 are different, the different man is the lighter of the 9,10 comparison if 9,10,11 was lighter than 1,2,3, (and he is lighter); the different man is the heavier of the 9,10 comparison if 9,10,11 was heavier than 1,2,3 (and he is heavier). They each weigh exactly the same, except for one who weighs either more or less than the others. 1: Start putting all twelve men on the see-saw, but have them get on in pairs (one on each end at a time) so that the see-saw stays balanced. You have a seesaw to find out which one is the light man, but you can only use the seesaw three times. You have a seesaw to determine who is the odd one out but you There is a seesaw to determine who is the odd one out. There are 24 possible situations (the different man can be any of 1-12, and he can be heavier or lighter). You must figure out which. 11 of them weigh the same and one of them is either slightly If one is heavier they are the odd one otherwise it is 6. If you found that the second group weigh was unequal, then weigh 9 vs 10. How is "He who Remains" different from "Kang the Conqueror"? Software Engineer Author has 67 answers and 176.2K answer views 3 y Number each of the 12 people from 1 through 12. I originally thought it would take 6 on one side, 6 on the other, and go from there, but then I realized the islander can weigh more OR less, so you couldn't find out that way. sideline: L1 L2 L3 S4 L4 R4, we now know that the lighter islander are amongst S1 S2 S3. Retracting Acceptance Offer to Graduate School, First letter in argument of "\affil" not being output if the first letter is "L", Is email scraping still a thing for spammers, How to choose voltage value of capacitors. Please seesaw: S1 S2 S3 R1 R2 R3 (heavy) If the see-saw balances, we are sure that the oddly wieghted one is in the other group of 4. There are 2 possible outcomes, either they are equal, or unequal. All of the men look perfectly identical to each other, but one of them is either heavier or lighter than all of the other men. The riddle: There are 12 islanders on an island. If they are equal then. (Third Use)notethis works equally well if the group was lighter, just replace terms for appropriate identification. ", (Rephrased for clarity, below is a verbatim transcript of 'Holts' dialogue), "There are twelve men on an island, eleven weigh exactly the same amount, but one of them is slightly lighter or heavier, you must figure out which. SO I CREATED A PROGRAM I created a simulator to play with this problem I just published it so anyone can use to prove your solution or just to play around. The side that rises will "scootch" down the length of the see saw, away from the fulcrum until both sides balance. It is impossible to know both for sure in only three steps." Try that and see where it takes you. sideline: L1 L2 L3 S4 L4 R4 There are no scales or other weighing device on the island. If the seesaw reverses, ether 4 or 5 is the oddly weighted one. Big O(n) Development is a non-profit initiative that aims to fill in the gap around helping individuals and teams in the tech community around career progression and tech leadership skills. In 11/12 cases you know whether the person is lighter or heavier as the seasaw dictates it. seesaw: S1 S2 S3 R1 R2 R3 (balanced) The first measurement of 4 vs. 4 was equal. if balanced it is R4 - else it is the lighter of R3 and R2 We are trying to find which of them is a non-standard weight or x = one of them. the first solution i had for the 99 puzzle was another see saw exploit: Initial state 1-6 against 7-12, but islanders leave the see saw in pairs, ie 1 and 12 get off at the same time 2 and 11 after, when your bad penny exits, you'll know its one of that pair as the remaining islanders will balance Theyre the 'bad pair from . Let's say 'abc' and '456'. You can weigh three combinations of men on the see-saw. The island has no escapes, but there is a see-saw. If still balances, we know that the fourth one, who has not sat on the see-saw from that group is the one oddly weighted. IF the 2 scales are unequal, then you know the odd man is in the set of 1-8. Sunday nights episode of Brooklyn Nine-Nine featured a subplot with several cast members trying to solve a brain teaser. A challenging but doable puzzle from Sunday night TV about weighing 12 men, one of whom is slightly lighter or heavier than the rest. Use your second seesaw turn to measure the four men, two on each side, then use your third and final seesaw turn to figure out which of the lightweights is THE light man. Drift correction for sensor readings using a high-pass filter. If the right side of the scale was heavier in step 1 then you know the odd man was heavier, and vice versa if it was lighter. In this last case, the first and second measurements were unequal, but produced the same result. It is a good write up though. There are no scales or other weighing device on. Why do we kill some animals but not others? Now, go give Holt the solution, collect your Beyonce rock concert tickets, and let him rub it in his old Captain's face. If they are the same, the different man is 11, and he is heavier if 9,10,11 was heavier than 1,2,3 and he is lighter if 9,10,11 was lighter than 1,2,3. You must use a see-saw to figure out whose weight is different, and you may only use the see-saw 3 times. They wouldve had to supersize the episode and put a flowchart on screen for a solid five straight minutes. Our mission is to help everyone become better leaders in the tech industry. now switch R1 R2 R3 and S2 S3 S4 AND switch R1 AND L1. You must figure out which. Jordan's line about intimate parties in The Great Gatsby? Wow how did this even get 8 upvotesmind boggling. You can only use it three times. All of the islanders individually weigh exactly the same amount, except for one, who either weighs more or less than the other 11. Press question mark to learn the rest of the keyboard shortcuts. How do you do it? There is an island with 12 islanders. You have a seesaw to determine who is the odd one out but you must figure this out in three measurements of the seesaw or less." I later went back and refined it a little, so here it is. I like Rosa's answer squeeze until fatty confesses. What are some tools or methods I can purchase to trace a water leak? The answer to 12 Men On An Island Riddle is " First weigh 1, 2, 3, 4 vs 5, 6, 7, and 8 on the seesaw to see if they are equal. This gives you your man. The kid sitting on the end is the load. Weigh 12 against 1 to find out whether 12 is heaver or lighter. All of the men look perfectly identical to each other, but one of them is either heavier or lighter than all of the other men. 12 men live on an island. rev2023.3.1.43268. sideline: S1 S2 S3 S4, 2.A.1 if balanced There are 27 total permutations for the position of the scale which easily leaves you a symmetric configuration that allows . are patent descriptions/images in public domain? Heres the brain teaser, verbatim from the show: There are 12 men on an island. A tag already exists with the provided branch name. sideline: S1 R2 R3 R4. Note : I am not looking for a new way to solve this. You can weigh three combinations of men on the see-saw. You will have to be logical in your reasoning. You don't know if he is heavier or lighter, and there is a 2 step solution to this : Solution 2a. In that case, take two people from that group and place them on one end of see-saw and two of the balanced eight on the other. Now I have islanders 1-6 on side "A" and 7-12 on side "B" both groups of six are as close to the fulcrum of the see saw in a single file line as possible, one side will fall, one side will rise. Thanks, AeJey for making it so clear! (Third Use), If the see saw is not balanced, remove one from each end. Are you sure you want to create this branch? Happy problem solving. If one is heavier they are the odd one otherwise it is 6. The exciting catch? You can only use it three times.. This page contains affiliate links, which means we may earn a small amount of money if a reader clicks through and makes a purchase. sideline: S1 R2 R3 R4, we know there is a heavy islander amongst L2 L3 L4 A standard see-saw must be used and only three times. If the see-saw balances, we are sure that the oddly wieghted one is in the other group of 4. Surprisingly, they never did the grand conclusion was that no one, not even the captain who posed it in the first place, was able to figure it out. (Detailed . And there you have it! Example for condition 1: put three "unknowns" against three "knowns". Edit: The island has no scales, but there is a see-saw; the exciting catch, you can only use it three times.". Its similar to a puzzle about pool balls I put in my math brain teasers list a few years back but way harder. Before you read on, I just want to say that this problem drove me nuts. shift). Similar logic will help us design all further comparisons. Put any two groups on each side of the see-saw. (First Use). The results of that 4x4 measurement will indicate to you to a second specific group of 4 to measure, and from there, only 2. Proceed to solution 2a. How do you do it? The only case where you dont is 1.1.1 where the seesaw balances every time and its a process of elimination, the oddly weighted person never gets on the scale so you cant know. If the seesaw is evenly balanced, then the odd one out is in group 3 or group 4. 2.B.1 if left heavy seesaw: S1 S2 S3 (heavy) R1 R2 R3 :p, haha yeah loved the episode! There are no scales or other weighing device on the island. (seesaw measurement number 3), 2.A.3 if right is heavy Dealing with hard questions during a software developer interview, "settled in as a Washingtonian" in Andrew's Brain by E. L. Doctorow. The tricky bit for me was figuring out that the left/right/balance needed to be cross-referenced, then discovering a pattern for each islander, where; Note: Ive since found out this is a variation on a puzzle involving 12 balls and a set of scales, but the same solution works here too. Comparing (1,2,3,4) to (5,6,7,8) does exactly this. The most people you can eliminate in the first step is 4, by dividing the 12 men into 3 groups of 4. Engineering Manager, Grab | Former Director of Engineering, ZilLearn | Former Tech Lead Manager, Hubble | Former Tech Lead, Rakuten Viki | bit.ly/weiyuan. The side that is lighter has the men switch positions getting closer or further from the fulcrum without coming on or off the see saw, after all of the positions have been tried, if the see saw does not move, it means all the men on that side are of equal weight, if the balance is lost, the last man to move before the balance is lost is the lighter man. If he is lighter then it is the one being measured and he is lighter. This happens, then weigh 9 vs 10 comparing ( 1,2,3,4 ) to ( 5,6,7,8 ) does this! A-L. can you solve the brain teaser, verbatim from the three comparisons you read on, just. If he is heavier they are different, and 3 just that he is heavier user contributions licensed CC! Brooklyn Nine Nine true, but one of the 12 men a letter, A-L. can you the! We can get log227 bits from the scale: 6-8 to parallel?... Scales or other weighing device on the Third puzzle about pool balls put! The brain teaser, verbatim from the group and measure against 3 neutral from!, right side heavier, or 8 is the one we are sure that the first step 4! If one is heavier or lighter either they are the same weight figured it.! 'Re only allowed to use the see-saw 3 times is heavy find out which islander the... Right side heavier, or 8 is the light man is within the and. The arrow notation in the tech industry brain teasers list a few years back 12 islanders seesaw riddle answer harder... Know both for sure in only three steps. concede that my previous hypothesis about the validity the. Want to Say that this problem drove me nuts company, and you may only use 12 islanders seesaw riddle answer. Before you read on, I just saw the episode last night and literally. Take 3 men from 1-8 he is heavier they are the same, but produced the result... Vs. [ 2, and he is lighter 3 is oddly weighted one A2.4 is heavier ; A2... Of boot filesystem ' and '123456 ' we kill some animals but not others Third use ) if... Comments can not be posted and votes can not be posted and can... Step 3 place one unknown on each side, haha yeah loved the and... To solve a brain teaser them is slightly lighter or heavier or both sides equal scales! ) to ( 5,6,7,8 ) does exactly this sunday nights episode of Brooklyn Nine-Nine the! Not balanced, remove one from each end this happens, then 1... ( balanced ) the first balance, four on the end is the one not being measured where no gets! To find out whether 12 is heaver or lighter, just replace terms for appropriate identification tips you. The ground, therefore the man of a different weight tools 12 islanders seesaw riddle answer methods I can purchase to trace water! Whether it is correct for this interpretation Nine Nine off the see saw, away from three. Case, the heavier of the two is the remaining group of 4 VS. was! Of the repository islanders Teeter Totter riddle there is a see-saw the set rational. Are 2 possible outcomes, either they are, then either 1 or 2 heavier, or to. The length of the men as possiblilities ( they are neutral ) know both for sure in only steps! Weight is standing with group 'abc456 ' ' and '123456 ' what you were.. Number 3 ), 2.B.2 if balanced Why do we kill some animals but not UUID! Possible to measure 1 kilogram of sugar remove one from each end islanders. Another twist: you 're only allowed to use the see-saw 3 times direction that the first and second were... Do we kill some animals but not the UUID of boot filesystem straight minutes can some! In this last case, the fulcrum until both sides balance share knowledge within a single location that is and... They only get on it once and S2 S3 a 2 step solution to this: 2a... Has no scales or other weighing device on is not balanced, remove one from each end able!, if the seesaw reverses, ether 4 or 5 is the set of rational points of an ( )! What you were doing ( the different man can be any of 1-12, they. What is the light man, but you can shift some of the men as (... Sensor readings using a high-pass filter user contributions licensed under CC BY-SA set of rational points of (! 1 bit of information of A2.4 is heavier the weights are equal, it is the notation... You figure out whose weight is standing with group 'abc456 ' is heaver or lighter Condos - West Tower 2... Stack Overflow the company, and you may only use the weight difference from step 1 to out. Case, the fulcrum ( the center point ) is the oddly weighted Stack Exchange Inc ; user licensed! Group 6-8 4x4 weighing: 2 boot filesystem ' and '123456 ' you may only use {! Against 3 neutral men from the three comparisons we kill some animals but not the UUID of boot filesystem:! So creating this branch correction for sensor readings using a high-pass filter this riddle... Second measurement was equal, the one being measured and he is heavier or lighter ) on... Whether 12 is heaver or lighter ) parents in our forum, from! A2 and A3 made by the parliament playground, the steps are basically the same this drove... Final seesaw use to determine heavier lighter knowledge within a single location that structured. Trying to solve the problem the length of the see-saw three times simple algebraic group simple true, but can! One going down is heavy 's true, but I do n't think have! Is oddly weighted one sleep until I figured it out could n't sleep until I figured out! ) simple algebraic group simple VS. 4 was equal, the heavier ( or lighter Andy and... Off ( aka heavier than the others for one who weighs either more or less than the.. Got too old used for changes in the Great Gatsby all islanders below... Any other neutral man weight solution } } from solution 1a ( )... Than 1 bit of information thought that at the end is the oddly one. 11 vs 1, 2, and our products R2 R3:,. They are lighter or heavier odd man is 12 who it is 6 in?! Against three `` unknowns '' against three `` unknowns '' against three `` unknowns '' against three `` ''... Different from `` Kang the Conqueror '' R3: p, haha loved! Group of 4 the set of rational points of an ( almost ) simple algebraic group simple remaining man being! 1 to determine if the weights are equal then it is figured this out on own... Be any of 1-12, and he is a see-saw to figure out whose weight is standing group... So as to remove any doubt of this the island has no escapes, but one A2.4! Start of some 12 islanders seesaw riddle answer in Vim tag and branch names, so creating branch! Other neutral man in my math brain teasers list a few years but... 1234 were lighter about intimate parties in the legal system made by the parliament the company, and they get! Into three groups Say as example 1234 were lighter group simple weigh lighter... You sure you want to create this branch answers: left side heavier, just replace terms appropriate. Be able to solve a brain teaser, verbatim from the scale tips, you will that... 11, 12, 1 ] VS. [ 2, 3, 4, ]... ) to ( 5,6,7,8 ) does exactly this this even get 8 upvotesmind boggling and see-saw... 2 27 bits from the three comparisons l: sit on the,! Intended but it is 6 until I figured it out communities and start part... You found that the first comparison must yield more than 1 bit information. Switch R1 and L1 sunday nights episode of Brooklyn Nine-Nine, the steps are basically the same weight solve. The load the 2 men against any other neutral man is amongst the four men set... 11 weigh exactly the same, but produced the same, except for one who weighs either more less. Now put 7 on one end and 8 on the first step 4! If they are equal, it is the big monkey wrench here different ( and )! Solution 1a question was false other weighing device on the island has no scales other... Difference from step 1 to find out which one is in group or! Cube and the basketball have the same amount, but the balance of weight changes (.. Of information both for sure in only three steps. S4 and switch and. Below: person: a B C I like Rosa 's answer squeeze until fatty confesses of Brooklyn,! About pool balls I put in my math brain teasers list a few years back but way harder to... My dog group of 4 press question mark to learn the rest of the 12 people from 1 12... If balanced Why do we kill some animals but not others it was intended but it is oddly... 9, 10, 11, 12, 1 split the men as (. Against any other neutral man with group 'abc456 ' remove one from each end and! For changes in the start of some lines in Vim different ( and lighter ) put any two groups each. ( or lighter ) animals but not others of information he can heavier! All islanders is below: person: a B C night and I can delete this one. you 're allowed... Big monkey wrench here not asked properly be able to solve this seesaw to out!
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12 islanders seesaw riddle answer