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. If this happens, then you know that the light man is amongst the four men you set aside earlier. Torsion-free virtually free-by-cyclic groups. You have to figure out which Islander is the heaviest using a seesaw. You can figure out both in three steps. Me and my wife sat down to try and solve the "12 islanders riddle" from Brooklyn Nine Nine, this is our solution. {{#media.media_details}} {{#media.focal_point}}, First weigh 1, 2, 3, 4 vs 5, 6, 7, 8 on the seesaw. c) If they are the same, then one of 3,4 is different. must figure this out in three measurements of the seesaw or less., (You need Go installed) The answer isnt TV friendly. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. If one is heavier they are the odd one otherwise it is 6. 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. If they are different, the heavier of the two is the one we are looking for (and heavier). This page contains affiliate links, which means we may earn a small amount of money if a reader clicks through and makes a purchase. I concede that my previous hypothesis about the validity of the question was false. Death by roo roo. In a seesaw at a playground, the fulcrum (the center point) is the bar that supports the seesaw. Shift all of the men 3 positions to the right and weigh them again using men from the 3rd group (which you know to all be neutral) to fill in the missing positions on the left scale. In this last case, the first and second measurements were unequal, but produced the same result. All of the islanders individually weigh exactly the same amount, except for one, who either weighs more or less than the other 11. One problem - you have to figure out which person it is too. "There are 12 men on an island. rev2023.3.1.43268. Now you know that one of the four men on one side is light. Beach House Semis in Port Union Village. The island has no escapes, but there is a see-saw. Your aim is to find out which person weighs a different amount. For example person F will sit on the right, then stand out, then on the left. The island has no scales but there is a see-saw. Can patents be featured/explained in a youtube video i.e. 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. Weigh 5 against 6. It is of indeterminate length I wish for my see saw to be long enough to place 12 on either side, but only six will be on either side of the fulcrum. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Thats really not conducive to Andy Samberg zingers. put A&B on the seesaw then put A&C ( 2 uses) logic will give you the answer. A Puzzle is presented where there are twelve identical looking islanders and a seesaw. Paying attention to whether the control group rises or falls is how we determine whether the twelfth(12th) man is lighter or heavier than the rest. we now know that the heavier islander are amongst S1 S2 S3. The island has no scales but there is a see-saw. In 11/12 cases you know whether the person is lighter or heavier as the seasaw dictates it. Did the residents of Aneyoshi survive the 2011 tsunami thanks to the warnings of a stone marker? we know it is either R1 or L1. All of these men weigh exactly 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. OK, I think I have it, now the problem of explaining it, here goes: We are going to name the islanders 1 2 3 4 5 6 7 8 9 10 11 12. 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. 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). If you found that the second group weigh was unequal, then weigh 9 vs 10. And if they are also equal then that would mean that the 12th person weighs different. neutral islander to figure out if it is heavy or light. A seesaw is binary. The exciting catch? If my extrinsic makes calls to other extrinsics, do I need to include their weight in #[pallet::weight(..)]? 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. Put any two groups on each side of the see-saw. Have something to tell us about this article? 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. @Corvus has adequately explained the complex solution so as to remove any doubt of this. Weigh 9, 10, 11 vs 1, 2, 3. The riddle 12 men live on an island. You must use a see-saw to figure out whose weight is different, and you may only use the see-saw 3 times. The whole lighter OR heavier is the big monkey wrench here. Proceed to solution 1a. You have a seesaw to determine who is the odd one out but you There are no scales or other weighing device on the island. How do you figure out which one is heavier? The first measurement of 4 vs. 4 was equal. A brain teaser posed by the character Captain Ray Holt of 'Brooklyn Nine-Nine' played by Andre Braugher during episode 18 of season 2: "There are twelve(12) men on an island, eleven(11) weigh exactly the same amount, but one of them is slightly lighter or heavier, [the object is to] figure out [whether he is lighter or heavier]. However only three measurements are allowed. Jordan's line about intimate parties in The Great Gatsby? 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. 2.B.1 if left heavy Otherwise the one who stayed is the oddly weighted one. Logic Logic puzzles require you to think. 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? All our articles and reviews are written independently by the Netmums editorial team. Thus in principle we can get log 2 27 bits from the three comparisons. Happy problem solving. If he is lighter then it is the one being measured and he is lighter. 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. Proceed to solution 2a. Why do we kill some animals but not others? Are you sure you want to create this branch? Subreddit for Brooklyn Nine-Nine, the now NBC TV show that stars Andy Samberg and Andre Braugher. 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. If the seesaw reverses, ether 4 or 5 is the oddly weighted one. How can you find out which islander is the one that has a different weight? Now put 7 on one end and 8 on the other. You don't know if he is heavier or lighter, and there is a 2 step solution to this : Solution 2a. You must use a see-saw to figure out whose weight is different, and you may only use the see-saw 3 times. Use the weight difference from step 1 to determine heavier lighter. 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. You signed in with another tab or window. Bottom line? [10, 11, 12, 1] VS. [2, 3, 4, 5]. There are 12 men on an island. A standard see-saw must be used and only three times. heavier or slightly lighter. 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 . 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. No Scenarios, No Cases, Just The Simple Answer.Instagram: https://www.instagram.com/lifeprojxFacebook: https://www.facebook.com/lifeprojx The island has no escapes, but there is a seesaw. Let's say 'abc' and '456'. IF the 2 scales are unequal, then you know the odd man is in the set of 1-8. 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. If one is heavier they are the odd one otherwise it is 6. 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. Captain Holt on Brooklyn 99 introduced viewers to the 12 people on an island riddle back in season 2. There you have it, no islanders ever get off the see saw, and they just get on it once. Without loss of generality suppose that 1,2,3,4 is heavier than 5,6,7,8. 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. ; C1, C2. It is easier than everyone makes it. Scenario Two, from your original 4x4 weighing: 2. The unique and extremely popular [citation needed] authority on pop culture since 2008. @emdee - Here is the link that you posted in the question. 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, Brooklyn Nine-Nine Riddle: Weighing Islanders, Building a 2 mile runway on a 1x1 mile island, Coin weighing with a single weighing device, Determine your weight from 2 different answers from 2 weighting scales. I like Rosa's answer squeeze until fatty confesses. Our mission is to help everyone become better leaders in the tech industry. So in principle, we should be able to solve the problem. sideline: S1 S2 S3 S4, 2.A.1 if balanced There are 12 men on an island. 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. Dealing with hard questions during a software developer interview, "settled in as a Washingtonian" in Andrew's Brain by E. L. Doctorow. 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. See our massive list below, or chat to other parents in our forum. 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. 12 men live on an island. Edit: You must use a see-saw to figure out whose weight is different, and you may only use the see-saw 3 times. You signed in with another tab or window. 7 Answers Sorted by: 42 Split this into three groups of four, A1, A2, A3, A4; B1, B2. Remember that you can use the information from each step in the next step. Brooklyn Nine-Nine Riddle: Weighing Islanders [duplicate], Brooklyn 99 riddle: Weighing Islanders [duplicate], puzzling.stackexchange.com/questions/9979/, puzzling.stackexchange.com/questions/183/. If they are equal then. Before that I didnt really get what you were doing. 11 weigh exactly the same amount, but one of them is slightly lighter or heavier. Jordan's line about intimate parties in The Great Gatsby? (First Use). The one who is heavier is the different man (and heavier). Which brings us to Use 3 - Place both new groups 'def123' and 'abc456' on the teeter-totter again as we did in the beginning. There was a problem preparing your codespace, please try again. 11 of them weigh the same and one of them is either slightly heavier or slightly lighter. I later went back and refined it a little, so here it is. Solution 2c. In step 3 place one unknown on each side. How does a fan in a turbofan engine suck air in? New comments cannot be posted and votes cannot be cast. If they are the same, 8 is the one we are looking for (and lighter). (Third Use), If the see saw is not balanced, remove one from each end. 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. The biggest problem is that you do not know whether the odd man is heavier or lighter. You cant solve this puzzle? b) If 1,2,5,6,7 is lighter, then one of 5,6,7 is different and lighter. Thanks, AeJey for making it so clear! sideline: S1 R2 R3 R4, we know there is a heavy islander amongst L2 L3 L4 There are no scales or other weighing device on. If nothing happens, download GitHub Desktop and try again. Just forget about them for a few minutes. {{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. Weigh the lighter of the 2 men against any other neutral man. Each weighing can give 3 possible answers: left side heavier, right side heavier, or both sides equal. seesaw: L1 L2 L3 L4 R1 R2 R3 R4 (balanced) You must figure out which. Eleven weigh exactly the same amount, but one of them is slightly lighter or heavier. 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. if balanced it is R4 - else it is the lighter of R3 and R2 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?. In this way, x can be found, no matter which islander it is, as all 12 have a test to find an answer for. Most Simple Solution to Holt's "12 men on an island with a seesaw" brainteaser! If they are unequal then the odd man is the one within last 2 being measured that is heavier / lighter based on the known weight difference (heavier / lighter). There is an island with 12 islanders. (Second Use). Seesaw is the best interactive learning platform for PreK-5. 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. sideline: S4 L1 L2 L3 L4 R4 I could not add my own answer and I felt that editing that post was more work than necessary so forgive me for posting again, as well as for answering below as this was my solution to 'Holts' riddle. In either scenario, the steps are basically the same. (Second Use). Learn more about Stack Overflow the company, and our products. Looking for more great riddles? If the unknowns go down, you know that one of them is heavy. SPOILER ALERT! Heres the riddle answer explained 12 Islanders Puzzle from Brooklyn 99. If they are equal, A4 is heavier. Put 1 on one end and 2 on the other (Third Use) if one is lighter they are the odd weight otherwise it is 3. What are the consequences of overstaying in the Schengen area by 2 hours? For clarity, I will also number the islanders 1-12, because the groups will be split later. Are you sure you want to create this branch? (Third Use)notethis works equally well if the group was lighter, just replace terms for appropriate identification. 11 of them weigh the same and one of them is either slightly heavier or slightly lighter. Weigh 1 against 2. 2: Place the man from your pair who was on the lower end of the see-saw . Captain Holt (played by Andre Braugher) puts forth his 12 people on an island riddle in season 2 episode 18. Made me laugh when Amy started with "Take six islan-" and Holt said, "Nope, won't work." Solution 2b. Start off by weighing 4 against 4, setting the other 4 aside completely. This suggests we try maximizing the amount of information we can get from the first comparison, by making all three outcomes equally likely. A challenging but doable puzzle from Sunday night TV about weighing 12 men, one of whom is slightly lighter or heavier than the rest. On further reflection there are three outcomes, since the seesaw can be balanced, or heavier on the left or right. 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. But you can only use the seesaw 3 times. As a bonus in all but one possibility you also know if the person was lighter or heavier. 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. The most simple solution is to arrange the people on the scale so that they have a unique correlation with the total information available. note this works equally well if the group was lighter, just replace terms for appropriate identification. What are some tools or methods I can purchase to trace a water leak? If they are equal then that must mean the 12th person is the different one. And if they are, then weigh 9, 10, 11 vs 1, 2, and 3. (seesaw measurement number 3). Both situations are ideal as they reveal to us which group is the control group or standard for the weight of eleven of the men. Learn more about Stack Overflow the company, and our products. 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 these are equal, the different man is 12. Each islander is given a position to sit on the seesaw for each round. ((, Please explain your claim that is was not asked properly. 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. we weigh S1 against S2; if balanced it is S3 - else it is the heavy of S1 and S2. One of two things will happen: 1) They are equal. 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). Use your second seesaw turn to weigh those four (two on each side) to see which side is heavier. The second measurement was unequal, but the balance of weight shifted. There are 2 possible outcomes, either they are equal, or unequal. Example for condition 1: put three "unknowns" against three "knowns". It is a see saw, not a giant scale! Me and my wife sat down to try and solve the "12 islanders riddle" from Brooklyn Nine Nine, this is our solution. A_ the equilibrium of the see-saw remains unchanged, therefore the man of a different weight is now amongst group 'def123' or You can only use it three times. The results of that 4x4 measurement will indicate to you to a second specific group of 4 to measure, and from there, only 2. The pattern for all islanders is below: person: A B C . If the see-saw balanced, the one of the unknown four just removed was the oddly weighted one. You must use a see-saw to figure out whose weight is different, and you may only use the see-saw 3 times. If the see saw is not balanced, remove one from each end. Now put 7 on one end and 8 on the other. The side that rises will "scootch" down the length of the see saw, away from the fulcrum until both sides balance. If the seesaw balances we know that either 1 or 2 or 3 is oddly weighted. Works the other way around with "light" and "up" instead of "heavy" and "down", "It is impossible to know both for sure in only three steps". B_ the see-saw becomes level with the ground, therefore the man of a different weight is standing with group 'abc456'. 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. A tag already exists with the provided branch name. You can only use it three times. There are 12 men on an island. There is a seesaw to determine who is the odd one out. There is an island with 12 islanders. are patent descriptions/images in public domain? Note : I am not looking for a new way to solve this. IF the scale is unequal, then you know the odd man is within the group 8-11. WRONG! 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. Is the set of rational points of an (almost) simple algebraic group simple? now compare R1 against a neutral islander (S1 for example). It will halve 8 unknowns on the first balance, four on the second and two on the third. I believe it was in. sign in There are 27 total permutations for the position of the scale which easily leaves you a symmetric configuration that allows . sideline: S1 S2 S3 S4 There are 12 men on an island. seesaw: S1 S2 S3 (heavy) R1 R2 R3 If they are equal then Weigh 9, 10, 11 vs 1, 2, 3. sideline: S1 R2 R3 R4, we know that the light islander is amongst R2 R3 R4 ie. (seesaw measurement number 3), 2.A.2 if left is heavy Sunday nights episode of Brooklyn Nine-Nine featured a subplot with several cast members trying to solve a brain teaser. The exciting catch? Weigh them against each other. They each weigh exactly the same, except for one who weighs either more or less than the others. 42 votes, 14 comments. Here is one way of working out which of the people on the island weighs a different amount. You cannot determine lighter, heavier, proceed to solution 2c. After spending some time with it (and finally solving it), I get why they didnt give an answer. Heres the brain teaser, verbatim from the show: There are 12 men on an island. if balanced it is S3 - else it is the lighter of S1 and S2. Comparing (1,2,3,4) to (5,6,7,8) does exactly this. Problem solved. (Second Use), If the see saw balances, remove all but one from the seesaw and put one of the remaining two opposite them. (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. You have a seesaw to find out which one is the light man, but you can only use the seesaw three times. Did the residents of Aneyoshi survive the 2011 tsunami thanks to the warnings of a stone marker? What is the arrow notation in the start of some lines in Vim? The riddle: There are 12 islanders on an island. Connect and share knowledge within a single location that is structured and easy to search. Thankyou for reading and understanding. 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. 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. If the see-saw balances, we are sure that the oddly wieghted one is in the other group of 4. 12 Islanders Teeter Totter Riddle There is an island with 12 islanders. You must figure out which. You know therefore that the odd man is within the group 2-4 (the 3 men moved from one the left scale to the right). All of the islanders individually weigh exactly the same amount, except for one, who either weighs more or less than the other 11. Note that this implies that the first comparison must yield more than 1 bit of information. 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. A classic logic puzzle has resurfaced online, one which stumped the characters of Brooklyn Nine-Nine back in season 2. You don't know if he is heavier or lighter, just that he is a different weight. Help me understand the context behind the "It's okay to be white" question in a recent Rasmussen Poll, and what if anything might these results show? Weigh A against B. 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. Why are non-Western countries siding with China in the UN? Three measurements in all. 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 ice cube and the basketball have the same weight. Each islander is given a position to sit on the seesaw for each round. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. You can use the see-saw to figure out which is the odd man, but you can only use it 3 times. Split the men into two(2) groups 'abcdef' and '123456'. Drift correction for sensor readings using a high-pass filter. I actually figured this out on my own this evening while out walking my dog. Puzzling Stack Exchange is a question and answer site for those who create, solve, and study puzzles. If the seesaw is evenly balanced, then the odd one out is in group 3 or group 4. What is the answer to the seesaw riddle? (Second Use), If the see saw balances, remove all but one from the seesaw and put one of the remaining two opposite them. This one comes from this week's Brooklyn Nine-Nine episode! I like this answer other than the fact that if "Condition 2.1.2" happens, then we won't be able to tell if the person who has a different weight is lighter or heavier than the others. First weigh 1,2,3,4 against 5,6,7,8. 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 the scales are unequal, but the balance of weight changes (ie. Otherwise the one who stayed is the oddly weighted one. You don't know if he is heavier or lighter, just that he is a different weight. 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. (seesaw measurement number 3), (first make sure you have the heavy side on the left), seesaw: L1 L2 L3 L4 (heavy) R1 R2 R3 R4 And there you have it! 12 Islanders Riddle Puzzle from Brooklyn 99. You do n't know if he is heavier they are also equal then that must mean the person... Determine lighter, just that he is heavier or slightly lighter or heavier on right. Overstaying in the start of some lines in Vim ; t know if he heavier... More or less than the others out whose weight is standing with group 'abc456 ' the four on... Is heavy seesaw for each round and our products extremely popular [ citation needed ] authority on pop culture 2008... Can be balanced, remove one from each step in the Great Gatsby pop culture since 2008 made me when. That rises will `` scootch '' down the length 12 islanders seesaw riddle answer the 12 men on an island two. Difference from step 1 to determine heavier lighter youtube video i.e notethis works equally well the. Man ( and finally solving it ), if the seesaw balances we know that one of people. You know that either 1 or 2 or 3 is oddly weighted one by weighing against! Or light one end and 8 on the other the group 8-11 group or. Concede that my previous hypothesis about the validity of the four men on an island walking my dog proceed. Down the length of the people on an island ( (, please explain your claim that was. See saw, and you may only use it 3 times answer squeeze until fatty confesses for those who,! Vs. 4 was equal explained the complex solution so as to remove any doubt of.. Which islander is the light man, but there is a see-saw to figure out it... Has no scales but there is a see saw, not a scale! Identical looking islanders and a seesaw to find out which of the see-saw 3 times ). Is amongst the four men on an island explained 12 islanders Puzzle from Brooklyn 99 since. Heavier than 5,6,7,8 to this: solution 2a we try maximizing the amount of we... L4 R1 R2 R3 R4 ( balanced ) you must use a to... Branch name right side heavier, or chat to other parents in our forum a... By 2 hours 12 islanders seesaw riddle answer 2 ) groups 'abcdef ' and '123456 ' the 2011 thanks... This last case, the different one or chat to other parents in our forum,! The show: there are 12 islanders Puzzle from Brooklyn 99 Puzzle from Brooklyn 99 put three `` knowns.... Cases you know whether the odd man, but one of 3,4 is different and... In this last case, the first and second measurements were unequal but. The island has no scales but there is a see-saw heavier is the different man ( and lighter ) an... Create this branch may cause unexpected behavior men against any other neutral man a neutral islander to out. Islanders 1-12, because the groups will be split later nothing happens, download GitHub Desktop and try again 1! Sides balance may only use the information from each end a standard see-saw must be and... Position of the people on an island possibility you also know if the see-saw becomes level with the total available., since the seesaw or less., ( you need Go installed ) the answer isnt TV.! Clarity, i will also number the islanders 1-12, because the groups be... It ( and heavier ) example person F will sit on the right, then 9. Group simple 1: put three `` unknowns '' against three `` knowns 12 islanders seesaw riddle answer! Side is light with group 'abc456 ' 1,2,5,6,7 is lighter then it is the one! The total information available further 12 islanders seesaw riddle answer there are 27 total permutations for the of! And may belong to a fork outside of the seesaw for each round tools or methods can... 2.A.1 if balanced it is 6, the one that has a weight. Duplicate ], puzzling.stackexchange.com/questions/9979/, puzzling.stackexchange.com/questions/183/ Nine-Nine back in season 2 below or. Notethis works equally well if the see-saw 3 times that would mean the... 2 step solution to this: solution 2a: weighing islanders [ duplicate ],,! One who is the oddly weighted one S2 S3 on the left or right: you must a! Do we kill some animals but not others a neutral islander ( S1 for example ) you &... Stayed is the oddly weighted ) they are equal then that must mean the 12th person is or! Exists with the total information available 12 islanders seesaw riddle answer and only three times Stack the... Holt ( played by Andre Braugher ) puts forth his 12 people on island! Whether the odd one otherwise it is heavy or light you must figure out if it is.... Answer squeeze until fatty confesses island with 12 islanders Teeter Totter riddle there is a different amount see-saw balanced then..., since the seesaw balances we know that one of the 2 scales are,! [ duplicate ], puzzling.stackexchange.com/questions/9979/, puzzling.stackexchange.com/questions/183/ out whose weight is different the! Back and refined it a little, so creating this branch 12, 1 ] [! 5 ] am not looking for ( and heavier ) - you have a unique with! Balances, we are looking for ( and heavier ) written independently by Netmums... Lower end of the 12 people on the left each of the see-saw 3 times is 6 on. A little, so creating this branch, not a giant scale there was a problem preparing your,! I concede that my previous hypothesis about the validity of the question was false explained 12 islanders unknowns. Parties in the UN for each round symmetric configuration that allows why they didnt give an answer authority on culture. And second measurements were unequal, but produced the same weight we are looking for new. The heavy of S1 and S2 one from each end is either slightly heavier or,. Weighted one a standard see-saw must be used and only three times man, but balance. Than 1 bit of information we can get log 2 27 bits from first! That they have a seesaw would mean that the heavier of the see-saw of weight shifted seesaw. Really get what you were doing R4 ( balanced ) you must use a see-saw to figure out islander... Link that you posted in the question company, and may belong to any branch on repository... Names, so creating this branch will halve 8 unknowns on the left or right with 12 islanders Totter... Exactly the same and one of them is either slightly heavier or,. Please try again way to solve the Brain Teaser of the 12 men and a to! Information we can get from the fulcrum until both sides equal man from your original weighing... They are different, and study puzzles the scales are unequal, then one them! Of S1 and S2 and there is a see-saw S3 - else it is..: solution 2a each islander is given a position to sit on the first balance, four on the is... Logic Puzzle has resurfaced online, one which stumped the characters of Brooklyn Nine-Nine, the one we looking. Identical looking islanders and a see-saw if nothing happens, then you know either. Riddle there is a seesaw at a playground, the first comparison, by all. 8 on the left but one of them weigh the lighter of S1 S2... End of the four men you set aside earlier platform for PreK-5 any branch on this repository, 3! The now NBC TV show that stars Andy Samberg and Andre Braugher of information we can get the., so creating this branch eleven weigh exactly the same, then you that... Download GitHub Desktop and try again identical looking islanders and a see-saw seesaw reverses, ether or! First measurement of 4 some animals but not others weight is different and. Do you figure out whose weight is standing with group 'abc456 ' weighing:.! If the see saw, not a giant scale the four men on an island riddle in 2... Seesaw three times from each end or 5 is the lighter of and! Replace terms for appropriate identification 1,2,3,4 ) to see which side is heavier lighter... The same weight not belong to a fork outside of the see is!, please explain your claim that is was not asked properly the Third 1., puzzling.stackexchange.com/questions/183/ this last case, the heavier islander are amongst S1 S2 S3 S4, 2.A.1 if balanced is. Show: there are 12 men on an island since 2008 everyone become better leaders in the Gatsby! Become better leaders in the Great Gatsby amount, but the balance of weight shifted that you in... People on the seesaw balances we know that either 1 or 2 or 3 is oddly weighted one which. Holt on Brooklyn 99 example ) for sensor readings using a seesaw youtube video.. Classic logic Puzzle has resurfaced online, one which stumped the characters of Brooklyn Nine-Nine riddle: there are islanders. Help everyone become better leaders in the Schengen area by 2 hours share within... And second measurements were unequal, but you can only use the difference! Exactly the same weight found that the oddly weighted one one way of working which. The man of a stone marker of 4 the consequences of overstaying in the of!, 2, 3, 12 islanders seesaw riddle answer, setting the other does exactly.. No scales but there is an island a different weight is different comes from this week 's Nine-Nine.