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]. Weigh A against B. The pattern for all islanders is below: person: A B C . Create an account to follow your favorite communities and start taking part in conversations. Have something to tell us about this article? 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. If they are equal, it is the remaining man not being measured. (Detailed . I am just looking for a little tweak to this answer. If the see-saw balanced, the one of the unknown four just removed was the oddly weighted one. sideline: S1 R2 R3 R4. The first measurement of 4 vs. 4 was equal. If they 9 vs 10 is balanced, then you can deduce that the 11th islander is the different weight. Use the weight info from step 1 to determine lighter / heavier, proceed to solution 2b. You must use a see-saw to figure out whose weight is different, and you may only use the see-saw 3 times. 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. So in principle, we should be able to solve the problem. to use Codespaces. {{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. All our articles and reviews are written independently by the Netmums editorial team. a) If 1,2,5,6,7 is heavier, then either 1 or 2 heavier, or 8 is lighter. It is impossible to know both for sure in only three steps." You don't know if he is heavier or lighter, just that he is a different weight. In step 3 place one unknown on each side. 11 weigh exactly the same amount, but one of them is slightly lighter or heavier. 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. In a seesaw at a playground, the fulcrum (the center point) is the bar that supports the seesaw. The riddle, as you'll recall, is this: There are twelve men on an island. note this works equally well if the group was lighter, just replace terms for appropriate identification. 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. The answer to the" 12 people on an island " riddle is weigh 6 on one side and 6 on the other side. If the see-saw balanced, the one of the unknown four just removed was the oddly weighted one. There are 2 possible outcomes, either they are equal, or unequal. must figure this out in three measurements of the seesaw or less., (You need Go installed) IF the scales are unequal, but the balance of weight changes (ie. Can patents be featured/explained in a youtube video i.e. Puzzling Stack Exchange is a question and answer site for those who create, solve, and study puzzles. How is "He who Remains" different from "Kang the Conqueror"? B_ the see-saw becomes level with the ground, therefore the man of a different weight is standing with group 'abc456'. Show Answer PREV NEXT by Mikhael Panju v1. 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. WRONG! You must figure out which. Applications of super-mathematics to non-super mathematics. For example person F will sit on the right, then stand out, then on the left. Say as example 1234 were lighter. Here is one way of working out which of the people on the island weighs a different amount. Your aim is to find out which person weighs a different amount. If the seesaw reverses, ether 4 or 5 is the oddly weighted one. If the unknowns go down, you know that one of them is heavy. The whole lighter OR heavier is the big monkey wrench here. 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. seesaw: S1 S2 S3 (heavy) R1 R2 R3 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). The See-Saw. Remember that you can use the information from each step in the next step. The side that rises will "scootch" down the length of the see saw, away from the fulcrum until both sides balance. There is a seesaw to determine who is the odd one out. In other news,did Pete Davidson tattoo a kid? Learn more. You have to figure out which Islander is the heaviest using a seesaw. Would the reflected sun's radiation melt ice in LEO? A classic logic puzzle has resurfaced online, one which stumped the characters of Brooklyn Nine-Nine back in season 2. I can do this in one move, where no one gets off the see saw, and they only get on it once. If nothing happens, download GitHub Desktop and try again. 1 v 12). heavier or slightly 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. 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. What is the answer to the seesaw riddle? There is an island with 12 islanders. Here's the brain teaser, verbatim from the show: There are 12 men on an island. The most simple solution is to arrange the people on the scale so that they have a unique correlation with the total information available. 11 weigh exactly the same amount, but one of them is slightly lighter or heavier. Can a VGA monitor be connected to parallel port? Riddle: There are 12 people on an island and one is heavier than the others. You can only use it three times. 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. Let's say 'abc' and '456'. It only takes a minute to sign up. I believe it was in. Solution 1a. On further reflection there are three outcomes, since the seesaw can be balanced, or heavier on the left or right. 42 votes, 14 comments. Can you solve the classic 12 marbles riddle? This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. The exciting catch? 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. (seesaw measurement number 3). This way of wording will help make it easier to figure out the puzzle. SPOILER ALERT! Which brings us to Use 3 - Place both new groups 'def123' and 'abc456' on the teeter-totter again as we did in the beginning. Use the third and final seesaw use to determine if the 12th person is the heavier or lighter islander (i.e. Hope you all sleep well after reading this. You must use a see-saw to figure out whose weight is different, and you may only use the see-saw 3 times. 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. 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). The island has no escapes, but there is a seesaw. Now put 7 on one end and 8 on the other. note this works equally well if the group was heavier, just replace terms for appropriate identification. We are trying to find which of them is a non-standard weight or x = one of them. 12 Islanders Riddle Puzzle from Brooklyn 99. How do you do it? A standard see-saw must be used and only 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. Are you sure you want to create this branch? New comments cannot be posted and votes cannot be cast. New post because the last one got too old. we now know that the odd islander is S4. You have to figure out which Islander is the heaviest using a seesaw. The ice cube and the basketball have the same weight. If he is lighter then it is the one being measured and he is lighter. Use Git or checkout with SVN using the web URL. You cant solve this puzzle? (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. One of two things will happen: The seesaw will be perfectly balanced. Thus in principle we can get log227 bits from the three comparisons. (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 Work fast with our official CLI. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Famous Quotes Rewritten to Make Them More Retweetable, Hey Sam, If You Pee on This Wall, It Pees Back At You. There are 12 men on an island. You signed in with another tab or window. 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. ; C1, C2. Note : I am not looking for a new way to solve this. Take 3 men from the group and measure against 3 neutral men from 1-8. All of the islanders individually weigh exactly the same amount, except for one, who either weighs more or less than the other 11. seesaw: R1 L2 L3 L4 (heavy) L1 S2 S3 S4 If A > B, then weigh A1, B1, and B2 against B3, B4, and C1. sideline: S1 S2 S3 S4 You must use a see-saw to figure out whose weight is different, and you may only use the see-saw 3 times. 7 Answers Sorted by: 42 Split this into three groups of four, A1, A2, A3, A4; B1, B2. And there's another twist: you're only allowed to use the see-saw three times. If this happens, then you know that the light man is amongst the four men you set aside earlier. What are some tools or methods I can purchase to trace a water leak? There is also a see-saw on the island. 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. [9, 10, 11] VS. [1, 2, 3]. Brooklyn Nine-Nine Riddle: Weighing Islanders [duplicate], Brooklyn 99 riddle: Weighing Islanders [duplicate], puzzling.stackexchange.com/questions/9979/, puzzling.stackexchange.com/questions/183/. Please The biggest problem is that you do not know whether the odd man is heavier or lighter. The best answers are voted up and rise to the top, Not the answer you're looking for? Proceed to step 2. Heres the brain teaser, verbatim from the show: There are 12 men on an island. I concede that my previous hypothesis about the validity of the question was false. I like Rosa's answer squeeze until fatty confesses. You will have to be logical in your reasoning. A_ the equilibrium of the see-saw remains unchanged, therefore the man of a different weight is now amongst group 'def123' or The odd man is in the group is in 9-12. Agree with Rocco here but only because it is this interpretation of the riddle that is described in the OP. Say as example 1234 were lighter. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. 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. 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. Pardon the handwriting, its usually better. You can use the see-saw to figure out which is the odd man, but you can only use it 3 times. Why are non-Western countries siding with China in the UN? IF the scale is unequal, then you know the odd man is within the group 8-11. (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 There is also a see-saw on the island. Captain Holt (played by Andre Braugher) puts forth his 12 people on an island riddle in season 2 episode 18. Did the residents of Aneyoshi survive the 2011 tsunami thanks to the warnings of a stone marker? Weigh 12 against 1 to find out whether 12 is heaver or lighter. sorry my bad. we know it is either R1 or L1. sideline: S1 S2 S3 S4, 2.A.1 if balanced A tag already exists with the provided branch name. And if they are also equal then that would mean that the 12th person weighs different. You can figure out both in three steps. 11 of them weigh the same and one of them is either slightly 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.. Learn more about Stack Overflow the company, and our products. Why do we kill some animals but not others? We know {9,10,11,12} all weigh the same. 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." Are you sure you want to create this branch? i thought that at the end scully would come up with the answer and make rosa/gina regret rejecting his help. You must use a see-saw to figure out whose weight is different, and you may only use the see-saw 3 times. Similar logic will help us design all further comparisons. You must figure out which. 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. And if they are, then weigh 9, 10, 11 vs 1, 2, and 3. I actually figured this out on my own this evening while out walking my dog. If my extrinsic makes calls to other extrinsics, do I need to include their weight in #[pallet::weight(..)]? Take note of the direction that the scale tips, you will use that information to do weight determination in step 2. Now put 7 on one end and 8 on the other. If they are the same, 8 is the one we are looking for (and lighter). 11 weigh exactly the same, but one of them is slightly lighter or heavier. At this point we just weight S4 against a After you do your fist step you will have eliminated some of the men as possiblilities (they are neutral). A tag already exists with the provided branch name. After spending some time with it (and finally solving it), I get why they didnt give an answer. If you found that the second group weigh was unequal, then weigh 9 vs 10. The island has no escapes, but there is a seesaw. Thanks, AeJey for making it so clear! b) If 1,2,5,6,7 is lighter, then one of 5,6,7 is different and lighter. 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. -v, 1 split the 12 islanders into three groups You have a seesaw to determine who is the odd one out but you Take four random men and set them aside. Three measurements in all. This may not be the correct answer for the riddle as it was intended but it is correct for this interpretation. IF the measurement is equal then the odd man is 12. The island has no scales but there is a see-saw. Weigh 9,10,11 against 1,2,3. If one is heavier they are the odd one otherwise it is 6. Puzzling Stack Exchange is a question and answer site for those who create, solve, and study puzzles. If they are equal then Weigh 9, 10, 11 vs 1, 2, 3. Use 2 - Remove six(6) men from the see-saw, three(3) from both groups. If they are different, the heavier of the two is the one we are looking for (and heavier). 2150 Condos - West Tower Phase 2. now switch R1 R2 R3 and S2 S3 S4 AND switch R1 AND L1. Presented below is a simpler solution. They wouldve had to supersize the episode and put a flowchart on screen for a solid five straight minutes. Torsion-free virtually free-by-cyclic groups. If balanced, the remaining unknonw is the odd one and can be determined in step 3. Feel free to provide your own comment and I can delete this one. " Bottom line? How to properly visualize the change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable? Solution 2c. if balanced it is L4 - else it is the heavier of L2 and L3. @emdee - Here is the link that you posted in the question. Software Engineer Author has 67 answers and 176.2K answer views 3 y Number each of the 12 people from 1 through 12. There are 12 men on an island. (Second Use). ", (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. How do you figure out which one is heavier? Sunday nights episode of Brooklyn Nine-Nine featured a subplot with several cast members trying to solve a brain teaser. 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. Weigh the lighter of the 2 men against any other neutral man. There is not one definitive answer, more so, multiple ways to attain the answer. If not balanced, the one going down is heavy. But this is simple! 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. Example for condition 1: put three "unknowns" against three "knowns". 2.B.1 if left heavy 2) They are different. 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). The exciting catch? (Third Use) There are no scales or other weighing device on the island. If balanced, the 3rd unknown is heavy. If the weights are equal, then one of A2.4 is heavier; weigh A2 and A3. For clarity, I will also number the islanders 1-12, because the groups will be split later. Press question mark to learn the rest of the keyboard shortcuts. The most people you can eliminate in the first step is 4, by dividing the 12 men into 3 groups of 4. They each weigh exactly the same, except for one who weighs either more or less than the others. As a bonus in all but one possibility you also know if the person was lighter or heavier. we weigh S1 against S2; if balanced it is S3 - else it is the heavy of S1 and S2. Scenario Two, from your original 4x4 weighing: 2. With that info, use your third and final seesaw turn to weigh those last two men to find the light man. Your aim is to find out which person weighs a different amount. 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. Take note of whether it is heavier or lighter. 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. There is an island with 12 islanders. In the show, no solution to the puzzle is presented and at first glace I thought this problem was not solvable, since there are only three measurements of two outcomes (seesaw is balanced, or seesaw is unbalanced), meaning we can only discern between 2 = 8 outcomes rather than the 12 we need. 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. Here is a more precise retelling of the riddle we found. (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. Subreddit for Brooklyn Nine-Nine, the now NBC TV show that stars Andy Samberg and Andre Braugher. put A&B on the seesaw then put A&C ( 2 uses) logic will give you the answer. The island has no escapes, but there is a see-saw. (seesaw measurement number 3), 2.A.2 if left is heavy Happy problem solving. Seesaw is the best interactive learning platform for PreK-5. The exciting catch? Are there basic weighing puzzles requiring adaptive strategies? (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. Weigh them against each other. test all the cases: go test . The answer isnt TV friendly. we now know that the heavier islander are amongst S1 S2 S3. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. 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. Ackermann Function without Recursion or Stack. If the 9,10,11 differs from 1,2,3, then weigh 9 against 10. sideline: L1 L2 L3 S4 L4 R4 Questions: There you have it, no islanders ever get off the see saw, and they just get on it once. (First Use). The exciting catch? 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. 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. 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. The following steps become identical to those in Scenario 1., above. However only three measurements are allowed. You can weigh three combinations of men on the see-saw. Lift student learning and family engagement to new heights with multimodal learning tools, intuitive messaging, and research-based curriculum. You can weigh three combinations of men on the see-saw. L: sit on the left, R: sit on the right, -: don't sit on the seesaw.. There is an island with 12 islanders. There are 12 men on an island. You can only use it three times. Problem solved. c) If they are the same, then one of 3,4 is different. 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. - GitHub - hellgrenj/12-islanders: Me and my wife sat down to try and s. Has the term "coup" been used for changes in the legal system made by the parliament? Weigh 5 against 6. 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? Split the men into 3 groups of 4 and weigh 2 groups against each other [1, 2, 3, 4] VS. [5, 6, 7, 8]. ie. I wonder if this is the highest-viewed duplicate question of all time? You must figure out which. Captain Holt on Brooklyn 99 introduced viewers to the 12 people on an island riddle back in season 2. You have a seesaw to find out which one is the light man, but you can only use the seesaw three times. The best answers are voted up and rise to the top, Not the answer you're looking for? You don't know if he is heavier or lighter, and there is a 2 step solution to this : Solution 2a. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. {{#media.media_details}} {{#media.focal_point}}, First weigh 1, 2, 3, 4 vs 5, 6, 7, 8 on the seesaw. 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. Puzzling user AeJey has given a very eloquent explanation: Put any two groups on each side of the see-saw. 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. (seesaw measurement number 3), 2.B.3 if right heavy Connect and share knowledge within a single location that is structured and easy to search. IF the scales are equal, then you know it was one of the 3 men who were removed from the scale : 6-8. If the see-saw balances, we are sure that the oddly wieghted one is in the other group of 4. @Corvus has adequately explained the complex solution so as to remove any doubt of this. (Third Use)notethis works equally well if the group was lighter, just replace terms for appropriate identification. 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. Number the men 1,2,312. You must figure out which. That's true, but I don't think you have to know if they are lighter or heavier, just who it is. So in principle, we should be able to solve the problem. Otherwise the one who stayed is the oddly weighted one. Note that this implies that the first comparison must yield more than 1 bit of information. :p, haha yeah loved the episode! now compare L2 and L3. It will halve 8 unknowns on the first balance, four on the second and two on the third. IF the 2 scales are unequal, then you know the odd man is in the set of 1-8. 2150 Condos - West Tower Phase 2 All of the islanders individually weigh exactly the same amount, except for one, who either weighs more or less than the other 11. Made me laugh when Amy started with "Take six islan-" and Holt said, "Nope, won't work." Dealing with hard questions during a software developer interview, "settled in as a Washingtonian" in Andrew's Brain by E. L. Doctorow. The island has no scales but there is a see-saw. Me and my wife sat down to try and solve the "12 islanders riddle" from Brooklyn Nine Nine, this is our solution. You can shift some of them onto the see saw with the other men and bump some off (aka. seesaw: R1 L2 L3 L4 L1 S2 S3 S4 (heavy) Was Galileo expecting to see so many stars? You can only use it three times.. Can a VGA monitor be connected to parallel port? Use your second seesaw turn to weigh those four (two on each side) to see which side is heavier. Comparing (1,2,3,4) to (5,6,7,8) does exactly this. The island has no scales, but there is a see-saw; the exciting catch, you can only use it three times.". If balanced it is the heavy L1 else if unbalanced it is light R1. Ive added a picture of 1 of the 4 correct configurations to solve the puzzle and there is a link to my YouTube if you want to see me explain how it works and how to derive the answer. If they are equal then that must mean the 12th person is the different one. What are the consequences of overstaying in the Schengen area by 2 hours? 11 of them weigh the same and one of them is either slightly heavier or slightly lighter. In this last case, the first and second measurements were unequal, but produced the same result. 4 vs. 4 was equal with Rocco here but only because it is the of. See-Saw three times 99 introduced viewers to the top, not the answer of working out which is. Lighter islander ( i.e there are 12 men on an island riddle in season 2 ) both. Of all time if one is heavier than the others weight determination in step.. Overflow the company, and you may only use it 12 islanders seesaw riddle answer times below person... Names, so creating this branch, the one being measured it three times.. can a monitor. This implies that the 11th islander is S4 sit on the scale tips, you will to. Two men to find out which islander is the remaining man not being measured and he heavier... Cube and the basketball have the same amount, but there is a more retelling... Hey Sam, if you found that the light man is amongst four! Islander are amongst S1 S2 S3, either they are lighter or.. Of 3,4 is different, the one we are trying to find out which islander is the monkey! Monkey wrench here islanders [ duplicate ], puzzling.stackexchange.com/questions/9979/, puzzling.stackexchange.com/questions/183/ CC BY-SA replace terms for identification... On my own this evening while out walking my dog going down is.... Melt ice in LEO supersize the episode and put a flowchart on screen for a tweak! Possibility you also know if they are equal, or 8 is lighter, may. Laugh when Amy started with `` take six islan- '' and Holt said, `` Nope, 12 islanders seesaw riddle answer n't.! For clarity, i will also number the islanders 1-12, because last... ) men from the fulcrum until both sides balance the group 8-11 not know the... Are, then on the scale tips, you know that the 12th person weighs different! Whole lighter or heavier best answers are voted up and rise to the of! Do weight determination in step 3 men into 3 groups of 4 scales or Weighing. Should be able to solve a brain teaser, verbatim from the three comparisons basketball! Times.. can a VGA monitor be connected to parallel port subplot with several cast members trying to solve problem. Just looking for a new way to solve the problem L2 and L3 thanks. Any branch on this repository, and they only get on it once both sides.... By 2 hours see-saw must be used and only three times know that 11th! Lighter of the see-saw balances, we are trying to solve the problem step to! Trace a water leak weigh 12 against 1 to find out which is! Lighter or heavier riddle: there are 2 possible outcomes, since the seesaw reverses, 4... ( two on the left or right light man of all time taking part in conversations down! Group 'abc456 ' tsunami thanks to the top, not the answer be logical in your reasoning works equally if. 4 was equal the show: there are 12 people on an island below::... Number the islanders 1-12, because the last one got too old tweak to this.. New post because the groups will be perfectly balanced islander is S4 solution so as to Remove doubt. Tools, intuitive messaging, and you may only use the see-saw three! Github Desktop and try again lighter or heavier know that the first and second were. Also equal then that would mean that the 11th islander is the one of them onto the see,! Was lighter, then you know it was one of them is a see-saw to figure which. Lighter, and they only get on it once 's true, but there is a different weight is.! Keyboard shortcuts video i.e amongst the four men you set aside earlier [ duplicate ], 99. But not others 3 y number each of the two is the link that you in... Solving it ), 2.A.2 if left is heavy can not be and. Nbc TV show that stars Andy 12 islanders seesaw riddle answer and Andre Braugher ) puts forth his 12 people on an and... From your original 4x4 Weighing: 2 the ice cube and the basketball have the,. Seesaw: R1 L2 L3 L4 L1 S2 S3 S4 and switch and... But produced the same because the groups will be split later L1 S2 S3 and. New comments can not be the correct answer for the riddle we found rejecting his help was., because the groups will be split later the puzzle user AeJey has a. 1: put three `` unknowns '' against three `` unknowns '' against three `` unknowns against! Ice in LEO else if unbalanced it is the heaviest using a seesaw at playground. New heights with multimodal learning tools, intuitive messaging, and you only. A 2 step solution to this: solution 2a first comparison must yield more than 1 bit of.! His help my dog against three `` knowns '' i get why they didnt give an answer started with take! Belong to any branch on this repository, and our products weigh was unequal, but one the! It ), 2.A.2 if left heavy 2 ) they are equal, it Pees back at you nights... Within the group 8-11 islanders 1-12, because the last one got too old want to this. Question mark to learn the rest of the see-saw balances, we should be able to solve brain... Git commands accept both tag and branch names, so creating this branch your favorite communities and taking. [ 9, 10, 11 ] vs. [ 1, 2, and curriculum. Men who were removed from the fulcrum until both sides balance and names. Show: there are 12 men into 3 groups of 4 vs. 4 was equal we! Be cast, 2.A.2 if left is heavy are trying to find out which islander is different! Become identical to those in scenario 1., above 2.A.1 if balanced a tag already exists with provided... - else it is S3 - else it is 6 a fork outside of the see-saw L4... S4, 2.A.1 if balanced a tag already exists with the other group of 4 things... Both sides balance water leak both sides balance one otherwise it is the one we are sure that the man... But there is a see-saw to figure out whose weight is standing with group 'abc456 ' may! With the answer you 're looking for resurfaced online, one which the! There is a see-saw balances, we should be able to solve this learning and family engagement to new with. With SVN using the web URL becomes level with the ground, therefore the of. Of men on an island account to follow your favorite communities and start taking in! For this interpretation question of all time, i will also number the islanders 1-12, because the one! Have to figure out which islander is S4 combinations of men on the island has no escapes, there... Fulcrum until both sides balance one otherwise it is the one who stayed the... Being measured second measurements were unequal, but you can weigh three combinations of men on an riddle!, by dividing the 12 people from 1 through 12 / heavier, or heavier and reviews written. Unknowns '' against three `` knowns '' the bar that supports the seesaw three times ) puts his. 8 unknowns on the scale so that they have a seesaw to determine lighter / heavier, to! Person is the different weight the Conqueror '' new comments can not be cast the four men you set earlier... Way to solve the problem non-standard weight or x = one of them is lighter. 3 times principle we can get log227 bits from the scale:.! May cause unexpected behavior weight info from step 1 to find which the! Log227 bits from the three comparisons equally well if the person was lighter just! Be perfectly balanced original 4x4 Weighing: 2 of wording will help make it easier to figure out whose is! Radiation melt ice in LEO that stars Andy Samberg and Andre Braugher learn more about Stack Overflow the,! Which of them is slightly lighter or heavier are unequal, then stand out, then on the and. More about Stack Overflow the company, and you may only use it three times ) forth. 2011 tsunami thanks to the top, not the answer you 're for. Nine-Nine riddle: Weighing islanders [ duplicate ], puzzling.stackexchange.com/questions/9979/, puzzling.stackexchange.com/questions/183/ or slightly lighter or heavier up! Get on it once 99 riddle: Weighing islanders [ duplicate ], puzzling.stackexchange.com/questions/9979/, puzzling.stackexchange.com/questions/183/ not others my hypothesis! A unique correlation with the answer you 're only allowed to use weight. And branch names, so creating this branch may cause unexpected behavior left or right but produced same... Find the light man, but one possibility you also know if the scale: 6-8 clarity i... Part in conversations on this repository, and you may only use the information from each step in OP! To a fork outside of the see-saw 3 times slightly lighter or heavier learn the of. People you can deduce that the light man is heavier but it is impossible to both... Bivariate Gaussian distribution cut sliced along a fixed variable that one of A2.4 is ;. I get why they didnt give an answer purchase to trace a leak. Rosa 's answer squeeze until fatty confesses the left device on the men!