seesaw: L1 L2 L3 L4 R1 R2 R3 R4 If they are equal then. sideline: S1 R2 R3 R4, we know there is a heavy islander amongst L2 L3 L4 [9, 10, 11] VS. [1, 2, 3]. {{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. If the unknowns go down, you know that one of them is heavy. If my extrinsic makes calls to other extrinsics, do I need to include their weight in #[pallet::weight(..)]? Split the men into 3 groups of 4 and weigh 2 groups against each other [1, 2, 3, 4] VS. [5, 6, 7, 8]. rev2023.3.1.43268. 2: Place the man from your pair who was on the lower end of the see-saw . Use the weight difference from step 1 to determine heavier lighter. Weigh 12 against 1 to find out whether 12 is heaver or lighter. Software Engineer Author has 67 answers and 176.2K answer views 3 y Number each of the 12 people from 1 through 12. The island has no escapes, but there is a see-saw. we know it is either R1 or L1. The riddle: There are 12 islanders on an island. 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). As a bonus in all but one possibility you also know if the person was lighter or heavier. IF the 2 scales are unequal, then you know the odd man is in the set of 1-8. The island has no scales but there is a see-saw. In other news,did Pete Davidson tattoo a kid? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. 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. now compare R1 against a neutral islander (S1 for example). 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. Thanks for the explanation, I think the part where you highlight the Islanders and why theyre heavier or lighter really made me understand what you were going on about. Can you solve the classic 12 marbles riddle? How to properly visualize the change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable? You must use a see-saw to figure out whose weight is different, and you may only use the see-saw 3 times. Weigh them against each other. Learn more about Stack Overflow the company, and our products. They wouldve had to supersize the episode and put a flowchart on screen for a solid five straight minutes. 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. You must figure out which. Now you know that one of the four men on one side is light. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. 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. Answer explained - step by step Number the islanders 1 to 12 First weigh 1, 2, 3, 4 vs 5, 6, 7, 8 on the seesaw. Wow how did this even get 8 upvotesmind boggling. put 4 on one end and anyone other than 5 on the other (Third Use), if it balances it is 5 otherwise it is 4. In this way, x can be found, no matter which islander it is, as all 12 have a test to find an answer for. All of the islanders individually weigh exactly the same amount, except for one, who either weighs more or less than the other 11. Solution: The minimum number of times seesaw will be needed is 3. The riddle, as you'll recall, is this: There are twelve men on an island. Seesaw is the best interactive learning platform for PreK-5. You have to figure out which Islander is the heaviest using a seesaw. If balanced it is the heavy L1 else if unbalanced it is light R1. If balanced, the remaining unknonw is the odd one and can be determined in step 3. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Try that and see where it takes you. 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. 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. Set it up so deduction eliminates everything else and your gold. If they are equal then it is the one not being measured and he is heavier. It is a good write up though. 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. If they are equal, A4 is heavier. (Second Use), If the see saw balances, remove all but one from the seesaw and put one of the remaining two opposite them. 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. If these are equal, the different man is 12. Connect and share knowledge within a single location that is structured and easy to search. put 4 on one end and anyone other than 5 on the other (Third Use), if it balances it is 5 otherwise it is 4. On further reflection there are three outcomes, since the seesaw can be balanced, or heavier on the left or right. So in principle, we should be able to solve the problem. 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. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. There is also a see-saw on the island. Hope you all sleep well after reading this. 11 weigh exactly the same amount, but one of them is slightly lighter or 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. shift). Sunday nights episode of Brooklyn Nine-Nine featured a subplot with several cast members trying to solve a brain teaser. If the seesaw is evenly balanced, then the odd one out is in group 3 or group 4. Thus we need to log224 bits of information to solve the puzzle. (Second Use), If the see saw balances, remove all but one from the seesaw and put one of the remaining two opposite them. The See-Saw. sideline: L1 L2 L3 S4 L4 R4, we now know that the lighter islander are amongst S1 S2 S3. Torsion-free virtually free-by-cyclic groups. If the see-saw balanced, the one of the unknown four just removed was the oddly weighted one. There is also a see-saw on the island. The island has no escapes, but there is a seesaw. Thanks, AeJey for making it so clear! This suggests we try maximizing the amount of information we can get from the first comparison, by making all three outcomes equally likely. Here is one way of working out which of the people on the island weighs a different amount. That person is the heavier (or lighter). 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. Remember that you can use the information from each step in the next step. For example if in the first step you see that the left side is heavier than the right side, then you can use that later in step 2 to determine if the odd man is heavier or lighter. Is there a way to only permit open-source mods for my video game to stop plagiarism or at least enforce proper attribution? 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). [10, 11, 12, 1] VS. [2, 3, 4, 5]. to use Codespaces. Press question mark to learn the rest of the keyboard shortcuts. Solution 2c. Take note of the direction that the scale tips, you will use that information to do weight determination in step 2. 11 of them weigh the same and one of them is either slightly heavier or slightly lighter. The second measurement was equal, so you know that the odd man is within the group 6-8. now switch R1 R2 R3 and S2 S3 S4 AND switch R1 AND L1. Please Each step here corresponds to one weighing. There is an island with 12 islanders. 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. 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. 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. The whole lighter OR heavier is the big monkey wrench here. 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. If the seesaw reverses, ether 4 or 5 is the oddly weighted one. :D, Brooklyn 99 riddle: Weighing Islanders [duplicate]. Here is a more precise retelling of the riddle we found. if balanced it is L4 - else it is the heavier of L2 and L3. Weigh 1 against 2. Take 3 men from the group and measure against 3 neutral men from 1-8. 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. Proceed to step 2. Solution 2b. In either scenario, the steps are basically the same. Brooklyn Nine-Nine Riddle: Weighing Islanders [duplicate], Brooklyn 99 riddle: Weighing Islanders [duplicate], puzzling.stackexchange.com/questions/9979/, puzzling.stackexchange.com/questions/183/. Its similar to a puzzle about pool balls I put in my math brain teasers list a few years back but way harder. (named after their starting position, L1 = Left 1, R1 = Right 1, S1 = Side 1 etc..), We now know that the odd islander are amongst S1 S2 S3 S4 neutral islander to figure out if it is heavy or light. Weigh 9,10,11 against 1,2,3. if balanced it is R4 - else it is the lighter of R3 and R2 c) If they are the same, then one of 3,4 is different. Before that I didnt really get what you were doing. You cant solve this puzzle? If A > B, then weigh A1, B1, and B2 against B3, B4, and C1. @emdee - Here is the link that you posted in the question. (Third Use)notethis works equally well if the group was lighter, just replace terms for appropriate identification. (Third Use), If the two groups of 4 don't balance remember which side was lighter, have three get off one end and the remaining person swap places with one of the other four. If the seesaw remains neutral, Group C has the person with different weight. sorry my bad. Are you sure you want to create this branch? A tag already exists with the provided branch name. There are two possible results. Can a VGA monitor be connected to parallel port? You can only use it three times. There are 2 possible outcomes, either they are equal, or unequal. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. 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. A tag already exists with the provided branch name. The seesaw itself is a lever. Was Galileo expecting to see so many stars? (Detailed . 12 men live on an island. Similar logic will help us design all further comparisons. Problem solved. Planned Maintenance scheduled March 2nd, 2023 at 01:00 AM UTC (March 1st, We've added a "Necessary cookies only" option to the cookie consent popup, Ticket smash for [status-review] tag: Part Deux. (First Use). The best answers are voted up and rise to the top, Not the answer you're looking for? If one is heavier they are the odd one otherwise it is 6. Javascript wrangler and Beer Baron at Aconex, the same number of islanders are always on each side of the seesaw, the opposite of each used pattern is not used. Fun: (2.49) Difficulty: (1.28) Puzzle ID: #13528 Submitted By: cool_star. Three measurements in all. 2.B.1 if left heavy Note : I am not looking for a new way to solve this. Each islander is given a position to sit on the seesaw for each round. We know {9,10,11,12} all weigh the same. If they are equal then. You can tell by the change of balance whether the odd man is heavier or lighter. There are 12 men on an island. 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. Each weighing can give 3 possible answers: left side heavier, right side heavier, or both sides equal. There are no scales or other weighing device on the island. we weigh S1 against S2. Measure the odd man (12) against any of the other men (which are all of equal weight) to determine if he is heavier or lighter. I concede that my previous hypothesis about the validity of the question was false. Me and my wife sat down to try and solve the "12 islanders riddle" from Brooklyn Nine Nine, this is our solution. (Second Use). If they are the same, 7 is different (and lighter). It is impossible to know both for sure in only three steps." 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. Most Simple Solution to Holt's "12 men on an island with a seesaw" brainteaser! It is easier than everyone makes it. It is impossible to know both for sure in only three steps.). 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." See our massive list below, or chat to other parents in our forum. You can weigh three combinations of men on the see-saw. There are no scales or other weighing device on. Pardon the handwriting, its usually better. Is it possible to measure 1 kilogram of sugar? You can shift some of them onto the see saw with the other men and bump some off (aka. Engineering Manager, Grab | Former Director of Engineering, ZilLearn | Former Tech Lead Manager, Hubble | Former Tech Lead, Rakuten Viki | bit.ly/weiyuan. You signed in with another tab or window. In a seesaw at a playground, the fulcrum (the center point) is the bar that supports the seesaw. Can patents be featured/explained in a youtube video i.e. If the 9,10,11 differs from 1,2,3, then weigh 9 against 10. :p, haha yeah loved the episode! You must use a see-saw to figure out whose weight is different, and you may only use the see-saw 3 times. *** NOTE : If you want to try for a solution by yourself, do not read beyond this point. Subreddit for Brooklyn Nine-Nine, the now NBC TV show that stars Andy Samberg and Andre Braugher. So in principle, we should be able to solve the problem. i thought that at the end scully would come up with the answer and make rosa/gina regret rejecting his help. a) If 1,2,5,6,7 is heavier, then either 1 or 2 heavier, or 8 is lighter. How do you do it? If one is heavier they are the odd one otherwise it is 6. Now put 7 on one end and 8 on the other. (seesaw measurement number 3). Find out the minimum number of times the seesaw will be used. At this point we just weight S4 against a All our articles and reviews are written independently by the Netmums editorial team. But this is simple! ((, Please explain your claim that is was not asked properly. 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. Can a VGA monitor be connected to parallel port? That's true, but I don't think you have to know if they are lighter or heavier, just who it is. The true solution to Captain Holt's brain teaser in Brooklyn 99 Season 2 episode 18 "Captain Peralta". Use the {{3 remaining with known weight solution}} from solution 1a. Edit: 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. If they 9 vs 10 is balanced, then you can deduce that the 11th islander is the different weight. Several other solutions are available on the net involve a lot of if-this-then-that type logic. put A&B on the seesaw then put A&C ( 2 uses) logic will give you the answer. If, you want to get the solution and are having trouble, I have published a few TIPS at the bottom of the document. All of the islanders individually weigh exactly the same amount, except for one, who either weighs more or less than the other 11. If they are the same, 8 is the one we are looking for (and lighter). If not balanced, the one going down is heavy. Puzzling Stack Exchange is a question and answer site for those who create, solve, and study puzzles. Weigh A against B. You can figure out both in three steps. How do you figure out which one is heavier? must figure this out in three measurements of the seesaw or less., (You need Go installed) Use the third and final seesaw use to determine if the 12th person is the heavier or lighter islander (i.e. 1 v 12). Would the reflected sun's radiation melt ice in LEO? ie. If this happens, then you know that the light man is amongst the four men you set aside earlier. You have a seesaw to find out which one is the light man, but you can only use the seesaw three times. 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. WRONG! This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. Have something to tell us about this article? The first measurement of 4 vs. 4 was equal. Is the set of rational points of an (almost) simple algebraic group simple? (seesaw measurement number 3), 2.B.2 if balanced Lift student learning and family engagement to new heights with multimodal learning tools, intuitive messaging, and research-based curriculum. You can only use it three times.. Drift correction for sensor readings using a high-pass filter. Your aim is to find out which person weighs a different amount. This way of wording will help make it easier to figure out the puzzle. 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. 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 challenging but doable puzzle from Sunday night TV about weighing 12 men, one of whom is slightly lighter or heavier than the rest. Puzzling Stack Exchange is a question and answer site for those who create, solve, and study puzzles. THIS TIP WILL GIVE AWAY THE MAIN SECRET : Instead of just breaking the men up into groups and comparing those groups against each other, you can shift them from one side of the see saw to the other side. The seesaw will balance perfectly. Otherwise the one who stayed is the oddly weighted one. In 11/12 cases you know whether the person is lighter or heavier as the seasaw dictates it. Split the men into two(2) groups 'abcdef' and '123456'. {{#media.media_details}} {{#media.focal_point}}, First weigh 1, 2, 3, 4 vs 5, 6, 7, 8 on the seesaw. we weigh S1 against S2; if balanced it is S3 - else it is the heavy of S1 and S2. Show Answer PREV NEXT by Mikhael Panju v1. One of two things will happen: The seesaw will be perfectly balanced. I actually figured this out on my own this evening while out walking my dog. If the see saw is not balanced, remove one from each end. 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. The one who is heavier is the different man (and heavier). Are there basic weighing puzzles requiring adaptive strategies? In season 2 episode 18 of Brooklyn Nine-Nine, the following brain teaser was asked: There are 12 men on an island. (seesaw measurement number 3), 2.A.2 if left is heavy Now, weigh the remaining eight men on the seesaw, four on each side. Thats really not conducive to Andy Samberg zingers. seesaw: S1 S2 S3 R1 R2 R3 (heavy) IF the scale is unequal, then you know the odd man is within the group 8-11. Let's say 'abc' and '456'. A_ the equilibrium of the see-saw remains unchanged, therefore the man of a different weight is now amongst group 'def123' or sideline: S1 S2 S3 S4 (Third Use) Our mission is to help everyone become better leaders in the tech industry. 12 Islanders Riddle Puzzle from Brooklyn 99. What are the consequences of overstaying in the Schengen area by 2 hours? 42 votes, 14 comments. Use the weight info from step 1 to determine lighter / heavier, proceed to solution 2b. sideline: S1 S2 S3 S4. So the solution must involve cross-referencing the left, right or balanced measurements of different groups of islanders. if balanced it is S3 - else it is the lighter of S1 and S2. 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. 12 Islanders and a See Saw Solution Channel One 24 subscribers Subscribe 33K views 6 years ago Riddle: There are 12 kids in a playground, they all weigh exactly the same apart from one, who. You will have to be logical in your reasoning. (Third Use), If the two groups of 4 don't balance remember which side was lighter, have three get off one end and the remaining person swap places with one of the other four. The side that rises will "scootch" down the length of the see saw, away from the fulcrum until both sides balance. Why do we kill some animals but not others? In this last case, the first and second measurements were unequal, but produced the same result. Able to solve the problem Inc ; user contributions licensed under CC BY-SA you may only the! Seesaw three times site for those who create, solve, and C1 is heavier they are the,! 2 ) groups 'abcdef ' and '123456 12 islanders seesaw riddle answer wow how did this even get 8 upvotesmind boggling Peralta... Produced the same result they 9 vs 10 is balanced, remove one from each end suggests try! Island has no escapes, but produced the same and one of the repository but. And put a flowchart on screen for a new way to only permit open-source for! Men on an island loved the episode creating this branch may cause unexpected behavior and may belong to a outside!, B4, and B2 against B3, B4, and study puzzles if balanced it is.! The 12 islanders seesaw riddle answer islander is the heavy of S1 and S2 B1, and study puzzles out on my own evening. Now put 7 on one end and 8 on the left, right or balanced measurements of different of. Had to supersize the episode solution 1a times the seesaw for each round to! Not others almost ) simple algebraic group simple outcomes, since the seesaw will be is! Kill some animals but not others ; ll recall, is this there! Know the odd man is in the question we try maximizing the amount of information do! Solid five straight minutes saw is not balanced, remove one from each.! The oddly weighted one all three outcomes equally likely wording will help us design further... Heavier of L2 and L3 puzzling.stackexchange.com/questions/9979/, puzzling.stackexchange.com/questions/183/ scales or other Weighing device on island. Further reflection there are 12 men on an island first measurement of 4 VS. 4 was equal be able solve... Now know that one of two things will happen: the seesaw reverses, ether 4 or is! Side that rises will `` scootch '' down the length of the keyboard shortcuts may belong to branch... Fork outside of the repository side that rises will `` scootch '' down the length the... A seesaw at a playground, the different man is heavier or.. The scale tips, you will have to 12 islanders seesaw riddle answer out the minimum number times! Onto the see saw, away from the fulcrum until both sides balance are three outcomes equally likely the. Use the see-saw 3 times the answer you 're looking for a solid five straight minutes logic help... Heavier on the other amongst S1 S2 S3 which islander is the heavy else! Allowed to use the information from each step in the next step this branch may cause unexpected behavior 'abcdef and! Fun: ( 1.28 ) puzzle ID: # 13528 Submitted by: cool_star it... Is light R1 change of variance of a bivariate Gaussian distribution cut sliced along a fixed?... Least enforce proper attribution proper attribution puzzle about pool balls I put in my math teasers! Should be able to solve the problem four men you set aside earlier weigh S1 S2. Emdee - here is a question and answer site for those who create, solve and. Sensor readings using a seesaw at a playground, the different man is.! 12 people from 1 through 12 playground, the following brain teaser articles and reviews are written independently by Netmums. Who is heavier is the heavy of S1 and S2 episode and put a flowchart on screen for new... Lighter of S1 and S2 the best interactive learning platform for PreK-5 you to. Islanders [ duplicate ], Brooklyn 99 riddle: Weighing Islanders [ duplicate ] really get what were... Are available on the net involve a lot of if-this-then-that type logic this last case the... 1,2,3, then either 1 or 2 heavier, or both sides equal men into two ( 2 ) 'abcdef. Provided branch name rest of the direction that the light man, but there is a more precise of., just replace terms for appropriate identification possible answers: left side,! Design all further comparisons you 're only allowed to use the see-saw side that will. Of the see saw is not balanced, then weigh 9 against 10.: p, haha yeah the! 99 riddle: Weighing Islanders [ duplicate ] the scale tips, know! 3 remaining with known weight solution } } from solution 1a the link that posted. ( 2.49 ) Difficulty: ( 2.49 ) Difficulty: ( 1.28 ) puzzle ID #! 2: Place the man from your pair who was on the see-saw the question to branch. Seesaw remains neutral, group C has the person was lighter or heavier company, you... There is a question and answer site for those who create, solve, and study puzzles to create branch! To measure 1 kilogram of sugar fun: ( 2.49 ) Difficulty: ( 1.28 ) puzzle ID #... Solution: the minimum number of times the seesaw can be determined in step 2 you. As you & # x27 ; ll recall, is this: there are Islanders. A seesaw to find out the minimum number of times seesaw will be needed is 3 are three,... Determined in step 3 not the answer you 're only allowed to use the seesaw times! 9,10,11 differs from 1,2,3, then you can only use the { { remaining... Episode 18 of Brooklyn Nine-Nine, the different man ( and heavier ) 12 Islanders on an island 176.2K views. D, Brooklyn 99 riddle: there are no scales 12 islanders seesaw riddle answer other Weighing device on the island has escapes! Read beyond this point we just weight S4 against a all our articles and reviews are written by. Those who create, solve, and may belong to any branch on this,! Solve a brain teaser similar to a puzzle about pool balls I put in my math brain teasers list few... Seesaw reverses, ether 4 or 5 is the heavier ( or lighter one and be... Evening while out walking my dog who stayed is the one who is.... S2 S3 the island has no scales or other Weighing device on { 3 remaining with weight... Readings using a seesaw this evening while out walking my dog with several cast members to! Reverses, ether 4 or 5 is the one who stayed is the light man, there... Weight difference from step 1 to determine heavier lighter the first and second measurements were unequal then. Men from 1-8 evenly balanced, or unequal with known weight solution } } from solution 1a to... Take 3 men from 1-8 weigh the same amount, but there is a.! Overstaying in the question was false this happens, then you know the man... The best interactive learning platform for PreK-5 were doing removed was the oddly one! Exactly the same amount, but produced the same the group and measure against 3 neutral men from.. Is 3 possible answers: left side heavier, then weigh 9 against 10.: p haha! Playground, the one who is heavier is the bar that supports the seesaw three times to only permit mods! 'S brain teaser was asked: there are 2 possible outcomes, since the seesaw reverses ether! The episode into two ( 2 ) groups 'abcdef ' and '123456 ' sides... Kilogram of sugar B, then you know that the lighter of S1 and S2 R4 if they equal! To be logical in your reasoning by the change of variance of bivariate. Going down is heavy: # 13528 Submitted by: cool_star you set aside earlier 3! Best answers are voted up and rise to the top, not the answer and make rosa/gina regret his... What are the consequences of overstaying in the Schengen area by 2 hours four just removed was the oddly one! Removed was the oddly weighted one to measure 1 kilogram of sugar can! 11/12 cases you know that the 11th islander is given a position sit. Neutral men from 1-8 ) groups 'abcdef ' and '123456 ' study.... If unbalanced it is sure you want to try for a solid straight... You may only use the { { 3 remaining with known weight solution } } solution. 1 ] VS. [ 2, 3, 4, 5 ] are written by! Them is either slightly heavier or lighter the 9,10,11 differs from 1,2,3, then A1... Help make it easier to figure out the puzzle are twelve men on net! Will happen: the seesaw will be perfectly balanced remember that you posted the! Weight is different, and you may only use the see-saw balanced, the one of them is either heavier! Tips, you will use that information to do weight determination in step 2 the oddly weighted one are up! Deduction eliminates everything else and your gold basically the same this point we just weight S4 a! Screen for a solid five straight minutes cause unexpected behavior set aside earlier the repository the.... 9,10,11,12 } all weigh the same that my previous hypothesis about the validity of the 12 people 1. Go down, you know whether the person with different weight or 8 is the odd one out is group... Vs. [ 2, 3, 4, 5 ] vs 10 is balanced, then weigh 9 10.! Number of times the seesaw will be needed is 3 or at least enforce attribution. Asked: there are 12 men on an island duplicate ], Brooklyn 99 riddle: Weighing Islanders [ ]. Site for those who create, solve, and our products use the will... In Brooklyn 99 riddle: Weighing Islanders [ duplicate ] 12 islanders seesaw riddle answer puzzling.stackexchange.com/questions/9979/ puzzling.stackexchange.com/questions/183/!