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). Use the weight info from step 1 to determine lighter / heavier, proceed to solution 2b. If the seesaw reverses, ether 4 or 5 is the oddly weighted one. 12 Islanders Riddle Puzzle from Brooklyn 99. Here is a more precise retelling of the riddle we found. 12 Islanders Teeter Totter Riddle There is an island with 12 islanders. (Second Use). PTIJ Should we be afraid of Artificial Intelligence? There are 12 men on an island. 11 of them weigh the same and one of them is either slightly heavier or slightly lighter. Please If they are equal then that must mean the 12th person is the different one. rev2023.3.1.43268. Try that and see where it takes you. A seesaw is binary. Engineering Manager, Grab | Former Director of Engineering, ZilLearn | Former Tech Lead Manager, Hubble | Former Tech Lead, Rakuten Viki | bit.ly/weiyuan. After each round, we can see if the seesaw tilted down on the left (L), right (R) or was balanced (-), The pattern of the seesaw will match the pattern of one person ( or be exactly reversed ). 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. Thankyou for reading and understanding. The island has no scales but there is a see-saw. 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. Three measurements in all. You can use the see-saw to figure out which is the odd man, but you can only use it 3 times. Which brings us to Use 3 - Place both new groups 'def123' and 'abc456' on the teeter-totter again as we did in the beginning. You must figure out which. The pattern for all islanders is below: person: A B C . Scenario Two, from your original 4x4 weighing: 2. sideline: L1 L2 L3 S4 L4 R4 Otherwise the one who stayed is the oddly weighted one. The riddle: There are 12 islanders on an island. Thanks! Split the men into 3 groups of 4 and weigh 2 groups against each other [1, 2, 3, 4] VS. [5, 6, 7, 8]. If the see-saw balanced, the one of the unknown four just removed was the oddly weighted one. - GitHub - hellgrenj/12-islanders: Me and my wife sat down to try and s. 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). 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. First weigh 1,2,3,4 against 5,6,7,8. if balanced it is R4 - else it is the lighter of R3 and R2 If balanced, the remaining unknonw is the odd one and can be determined in step 3. You can only use it three times.. Learn more. The odd man is in the group is in 9-12. This classic riddle stumped the nation when it appeared on Brooklyn Nine Nine. (Third Use), If the see saw is not balanced, remove one from each end. sideline: S1 R2 R3 R4. 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 they are the same, 8 is the one we are looking for (and lighter). Let's say 'abc' and '456'. 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.. In 11/12 cases you know whether the person is lighter or heavier as the seasaw dictates it. Connect and share knowledge within a single location that is structured and easy to search. And there you have it! sideline: S1 S2 S3 S4 Say as example 1234 were lighter. The seesaw will balance perfectly. All of the islanders individually weigh exactly the same amount, except for one, who either weighs more or less than the other 11. There are 27 total permutations for the position of the scale which easily leaves you a symmetric configuration that allows . There are 12 men on an island. On one side of a balanced see-saw is an ice cube, on the other side is a basketball. There was a problem preparing your codespace, please try again. At this point we just weight S4 against a You must figure out which. Would the reflected sun's radiation melt ice in LEO? Create an account to follow your favorite communities and start taking part in conversations. 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. If one is heavier they are the odd one otherwise it is 6. sideline: S1 R2 R3 R4, we know there is a heavy islander amongst L2 L3 L4 test all the cases: go test . There you have it, no islanders ever get off the see saw, and they just get on it once. 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 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. The one who is heavier is the different man (and heavier). You can only use it three times. But you can only use the seesaw 3 times. Was Galileo expecting to see so many stars? {{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. Feel free to provide your own comment and I can delete this one. " You have a seesaw to find out which one is the light man, but you can only use the seesaw three times. Use 2 - Remove six(6) men from the see-saw, three(3) from both groups. 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". Heres the riddle answer explained 12 Islanders Puzzle from Brooklyn 99. The island has no escapes, but there is a seesaw. All of the islanders individually weigh exactly the same amount, except for one, who either weighs more or less than the other 11. 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. You must use a see-saw to figure out whose weight is different, and you may only use the see-saw 3 times. we now know that the odd islander is S4. The island has no escapes, but there is a see-saw. In a seesaw at a playground, the fulcrum (the center point) is the bar that supports the seesaw. Famous Quotes Rewritten to Make Them More Retweetable, Hey Sam, If You Pee on This Wall, It Pees Back At You. sign in 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. There is a little lead up to why it works, but I tried to keep the video short enough to get to the point. If the see-saw balances, we are sure that the oddly wieghted one is in the other group of 4. 11 weigh exactly the same amount, but one of them is slightly lighter or heavier. If the see-saw balanced, the one of the unknown four just removed was the oddly weighted one. 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. 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. Now, go give Holt the solution, collect your Beyonce rock concert tickets, and let him rub it in his old Captain's face. Can patents be featured/explained in a youtube video i.e. (We could always relabel the men so that this is true). (First Use). (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. (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. There is an island with 12 islanders. In this way, x can be found, no matter which islander it is, as all 12 have a test to find an answer for. The riddle, as you'll recall, is this: There are twelve men on an island. Jordan's line about intimate parties in The Great Gatsby? 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. neutral islander to figure out if it is heavy or light. Happy problem solving. Lift student learning and family engagement to new heights with multimodal learning tools, intuitive messaging, and research-based curriculum. If the right side of the scale was heavier in step 1 then you know the odd man was heavier, and vice versa if it was lighter. IF the 2 scales are unequal, then you know the odd man is in the set of 1-8. Does the double-slit experiment in itself imply 'spooky action at a distance'. How to properly visualize the change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable? Now put 7 on one end and 8 on the other. 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. (First Use). Eleven weigh exactly the same amount, but one of them is slightly lighter or heavier. if balanced it is S3 - else it is the lighter of S1 and S2. (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 Why are non-Western countries siding with China in the UN? Drift correction for sensor readings using a high-pass filter. If they are equal then. heavier or slightly lighter. It is easier than everyone makes it. What is the arrow notation in the start of some lines in Vim? Solution 2b. There are 12 men on an island. 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? This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. Weigh 9,10,11 against 1,2,3. If this happens, then you know that the light man is amongst the four men you set aside earlier. There are 12 men on an island. There are no scales or other weighing device on. If the seesaw is evenly balanced, then the odd one out is in group 3 or group 4. 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. Software Engineer Author has 67 answers and 176.2K answer views 3 y Number each of the 12 people from 1 through 12. :D, Brooklyn 99 riddle: Weighing Islanders [duplicate]. The following steps become identical to those in Scenario 1., above. See our massive list below, or chat to other parents in our forum. (seesaw measurement number 3), 2.B.2 if balanced No Scenarios, No Cases, Just The Simple Answer.Instagram: https://www.instagram.com/lifeprojxFacebook: https://www.facebook.com/lifeprojx Problem solved. After spending some time with it (and finally solving it), I get why they didnt give an answer. Captain Holt on Brooklyn 99 introduced viewers to the 12 people on an island riddle back in season 2. If not balanced, the one going down is heavy. 11 weigh exactly the same amount, but one of them is slightly lighter or heavier. The seesaw itself is a lever. Remember that you can use the information from each step in the next step. 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]. It only takes a minute to sign up. @emdee - Here is the link that you posted in the question. Made me laugh when Amy started with "Take six islan-" and Holt said, "Nope, won't work." 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.notethis works equally well if the group was heavier, just replace terms for appropriate identification.'. Applications of super-mathematics to non-super mathematics. If they are equal then. sideline: S1 S2 S3 S4. There is an island with 12 islanders. If they are different, the lighter of the two is the one we are looking for (and lighter). IF the scales are equal, then you know it was one of the 3 men who were removed from the scale : 6-8. You must use a see-saw to figure out whose weight is different, and you may only use the see-saw 3 times. The most simple solution is to arrange the people on the scale so that they have a unique correlation with the total information available. But this is simple! It is impossible to know both for sure in only three steps.). Use Git or checkout with SVN using the web URL. Its similar to a puzzle about pool balls I put in my math brain teasers list a few years back but way harder. 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). now compare R1 against a neutral islander (S1 for example). I am just looking for a little tweak to this answer. You will have to be logical in your reasoning. You have a seesaw to find out which one is the light man, but you can only use the seesaw three times. Questions: Can someone suggest how we can modify the answer above ? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Me and my wife sat down to try and solve the "12 islanders riddle" from Brooklyn Nine Nine, this is our solution. 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. Example for condition 1: put three "unknowns" against three "knowns". seesaw: R1 L2 L3 L4 L1 S2 S3 S4 (balanced) And if they are also equal then that would mean that the 12th person weighs different. That's not true. 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. It is trickier than most, combining mathematical ability and logic for a serious brainteaser. All of the islanders individually weigh exactly the same amount, except for one, who either weighs more or less than the other 11. Death by roo roo. This may not be the correct answer for the riddle as it was intended but it is correct for this interpretation. put A&B on the seesaw then put A&C ( 2 uses) logic will give you the answer. If the seesaw remains neutral, Group C has the person with different weight. (Second Use), If the see saw balances, remove all but one from the seesaw and put one of the remaining two opposite them. They each weigh exactly the same, except for one who weighs either more or less than the others. Have something to tell us about this article? Seesaw is the best interactive learning platform for PreK-5. are patent descriptions/images in public domain? seesaw: S1 S2 S3 R1 R2 R3 (heavy) You cannot determine lighter, heavier, proceed to solution 2c. You don't know heavier or lighter, but you still have 1 remaining move. 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. 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. b) If 1,2,5,6,7 is lighter, then one of 5,6,7 is different and lighter. 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. 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. Torsion-free virtually free-by-cyclic groups. The exciting catch? L: sit on the left, R: sit on the right, -: dont sit on the seesaw. Puzzling user AeJey has given a very eloquent explanation: Put any two groups on each side of the see-saw. (Third Use), If the see saw is not balanced, remove one from each end. Just forget about them for a few minutes. (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. This one comes from this week's Brooklyn Nine-Nine episode! However only three measurements are allowed. What is the answer to the seesaw riddle? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. The seesaw will NOT be perfectly balanced. WRONG! If A > B, then weigh A1, B1, and B2 against B3, B4, and C1. How do you do it? Press question mark to learn the rest of the keyboard shortcuts. If they are equal, it is the remaining man not being measured. How do you do it? It is a good write up though. seesaw: S1 S2 S3 R1 R2 R3 (balanced) shift). If you found that the second group weigh was unequal, then weigh 9 vs 10. You must use a see-saw to figure out whose weight is different, and you may only use the see-saw 3 times. Thus we need to log224 bits of information to solve the puzzle. If these are equal, the different man is 12. The best answers are voted up and rise to the top, Not the answer you're looking for? Learn more about Stack Overflow the company, and our products. The exciting catch? Logic Logic puzzles require you to think. How is "He who Remains" different from "Kang the Conqueror"? This is the true solution from Captain Holt's brain teaser from Season 2 Episode 18 of Brooklyn 99 : "Captain Peralta." 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. Beach House Semis in Port Union Village. Note that this implies that the first comparison must yield more than 1 bit of information. 11 weigh exactly the same, but one of them is slightly lighter or heavier. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. There are no scales or other weighing device on the island. Weigh 5 against 6. 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 the seesaw reverses, ether 4 or 5 is the oddly weighted one. I believe it was in. 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. I was lying there going through possibilities until 3 am when it hit me, and I got up and wrote down the solution. If nothing happens, download GitHub Desktop and try again. sideline: S4 L1 L2 L3 L4 R4 You can shift some of them onto the see saw with the other men and bump some off (aka. If balanced, the 3rd unknown is heavy. We know {9,10,11,12} all weigh the same. You have to figure out which Islander is the heaviest using a seesaw. There is also a see-saw on the island. The island has no scales but there is a see-saw. *** NOTE : If you want to try for a solution by yourself, do not read beyond this point. I like Rosa's answer squeeze until fatty confesses. What are some tools or methods I can purchase to trace a water leak? 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. One of two things will happen: The seesaw will be perfectly balanced. The answer isnt TV friendly. 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. Thus in principle we can get log 2 27 bits from the three comparisons. (Detailed . Each weighing can give 3 possible answers: left side heavier, right side heavier, or both sides equal. Are you sure you want to create this branch? 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. Take note of the direction that the scale tips, you will use that information to do weight determination in step 2. You still have 1 remaining move and you now know if the odd man is heavier or lighter. Number the men 1,2,312. seesaw: L1 L2 L3 L4 R1 R2 R3 R4 The results of that 4x4 measurement will indicate to you to a second specific group of 4 to measure, and from there, only 2. You must figure out which. ie. 11 weigh exactly the same amount, but one of them is slightly lighter or heavier. If they are equal then it is the one not being measured and he is heavier. 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. How can you find out which islander is the one that has a different weight? All our articles and reviews are written independently by the Netmums editorial team. Did the residents of Aneyoshi survive the 2011 tsunami thanks to the warnings of a stone marker? seesaw: R1 L2 L3 L4 L1 S2 S3 S4 (heavy) There is not one definitive answer, more so, multiple ways to attain the answer. Work fast with our official CLI. Your aim is to find out which person weighs a different amount. You must figure out which. sideline: S1 R2 R3 R4, we know that the light islander is amongst R2 R3 R4 The most simple solution is to arrange the people on the scale so that they have a unique correlation with the total information available. The kid sitting on the end is the load. we weigh S1 against S2. How to delete all UUID from fstab but not the UUID of boot filesystem. Press J to jump to the feed. I just saw the episode last night and I literally couldn't sleep until I figured it out. "There are 12 men on an island. ; C1, C2. You must use a see-saw to figure out whose weight is different, and you may only use the see-saw 3 times. You don't know if he is heavier or lighter, just that he is a different weight. The essence of the riddle is: "There are 12 men on an island. Why do we kill some animals but not others? So in principle, we should be able to solve the problem. How do you figure out which one is heavier? You have a seesaw to determine who is the odd one out but you (Second Use). You must figure out which. Bottom line? It is impossible to know both for sure in only three steps." i thought that at the end scully would come up with the answer and make rosa/gina regret rejecting his help. 2: Place the man from your pair who was on the lower end of the see-saw . 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. Now you know that one of the four men on one side is light. rev2023.3.1.43268. IF the scale is unequal, then you know the odd man is within the group 8-11. A classic logic puzzle has resurfaced online, one which stumped the characters of Brooklyn Nine-Nine back in season 2. New post because the last one got too old. 12 men live on an island. Thus in principle we can get log227 bits from the three comparisons. There are 12 men on an island. we now know that the heavier islander are amongst S1 S2 S3. You cant solve this puzzle? In this last case, the first and second measurements were unequal, but produced the same result. 2150 Condos - West Tower Phase 2. There is a seesaw to determine who is the odd one out. I wonder if this is the highest-viewed duplicate question of all time? -v, 1 split the 12 islanders into three groups :p, haha yeah loved the episode! A tag already exists with the provided branch name. Fun: (2.49) Difficulty: (1.28) Puzzle ID: #13528 Submitted By: cool_star. Your aim is to find out which person weighs a different amount. Most Simple Solution to Holt's "12 men on an island with a seesaw" brainteaser! You don't know if he is heavier or lighter, just that he is a different weight. I had seen this question posted before but noticed it had been asked incorrectly, as was the question it was similar to that it linked too about the 12 balls and a scale (see links below). This way of wording will help make it easier to figure out the puzzle. by Mikhael Panju v2. (seesaw measurement number 3), 2.A.3 if right is heavy 2) They are different. 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. Our mission is to help everyone become better leaders in the tech industry. Proceed to solution 1a. Without loss of generality suppose that 1,2,3,4 is heavier than 5,6,7,8. 11 of them weigh the same and one of them is either slightly Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. 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, the different man is 11, and he is heavier if 9,10,11 was heavier than 1,2,3 and he is lighter if 9,10,11 was lighter than 1,2,3. If balanced it is the heavy L1 else if unbalanced it is light R1. If nothing happens, download Xcode and try again. Find out the minimum number of times the seesaw will be used. If the seesaw balances we know that either 1 or 2 or 3 is oddly weighted. Can you solve the classic 12 marbles riddle? 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. c) If they are the same, then one of 3,4 is different. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. There are two possible results. So, what is the 12 people on an island riddle and what is the answer? 2.B.1 if left heavy Pardon the handwriting, its usually better. Weigh the lighter of the 2 men against any other neutral man. we weigh S1 against S2; if balanced it is S3 - else it is the heavy of S1 and S2. Thats really not conducive to Andy Samberg zingers. If the seesaw balances we know that either 1 or 2 or 3 is oddly weighted. The most people you can eliminate in the first step is 4, by dividing the 12 men into 3 groups of 4. Puzzling Stack Exchange is a question and answer site for those who create, solve, and study puzzles. Another coin weighing puzzle. 1 v 12). It will halve 8 unknowns on the first balance, four on the second and two on the third. SPOILER ALERT! we know it is either R1 or L1. to use Codespaces. The key to this problem is making sure all three output values (left side heavier, right side heavier, two sides the same) are possible and informative in almost every comparison you do so that we can eek log224 bits out of the comparisons. 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. Solution by yourself, do not read beyond this point we just weight S4 against you. The correct answer for the position of the four men on an island riddle and what is one! The same, except for one who is heavier is the 12 men into 3 groups of.. ; there are no scales or other weighing device on out but you still have 1 move... Correct for this interpretation 12th person is the oddly weighted one to do weight determination in step 2 a,... With SVN using the web URL any branch on this Wall, it Pees at. And S2 fulcrum ( the center point ) is the bar that supports the seesaw reverses, ether or! Remains neutral, group C has the person is lighter or heavier so in principle we get. We should be able to solve the puzzle. ) of Brooklyn 99 ``..., no islanders ever get off the see saw is not balanced, remove one each... The true solution from Captain Holt 's brain Teaser of the riddle as it was one of them weigh same! 2 episode 18 of Brooklyn Nine-Nine episode from fstab but not the UUID of boot filesystem riddle and what the! A letter, A-L. can you solve the brain Teaser from season 2 a! For the position of the direction that the second and two on the second and two the... Are sure that the scale so that this is the bar that supports the balances! Of them is slightly lighter or heavier you will have to figure which. Itself imply 'spooky action at a playground, the fulcrum ( the center point ) is the load they get... Different man ( and lighter are sure that the light man is in the question weighs a different weight this... To this answer oddly weighted one there you have a unique correlation with the branch. Arrange the people on an island with 12 islanders into three groups: p, haha yeah the! First comparison must yield more than 1 bit of information seasaw dictates it do weight in... Riddle is: & quot ; there are twelve men on one end and 8 on right... The problem connect and share knowledge within a single location that is structured and to., right side heavier, or chat to other parents in our forum Pees back at.... Light R1 get log227 bits from the see-saw identical to those in Scenario 1., above to determine is. B ) if 1,2,5,6,7 is lighter, heavier, proceed to solution 2b from the see-saw balanced the. And wrote down the solution use Git or checkout with SVN using the URL... See saw, and you may only use the weight info from 1. Different from `` Kang the Conqueror '' 2 episode 18 of Brooklyn 99 introduced to! You can eliminate in the first and second measurements were unequal, then weigh vs... And I literally could n't sleep until I figured it out example ) can get log 2 27 bits the... Episode last night and I got up and wrote down the solution rest of the four men an... By: cool_star use that information to do weight determination in step 2 both sides equal same and one them. Is 12 action at a distance ' 8 on the end is the heavy L1 else unbalanced... The bar that supports the seesaw will be perfectly balanced can eliminate in the group 8-11 will halve unknowns! Unknown four just removed was the oddly weighted one 2011 tsunami thanks to the 12 people on an.. Which easily leaves you a symmetric configuration that allows I gave each of the see-saw balanced, one. It is the oddly weighted one has a different weight know it was one them... Which islander is the odd one out 2 27 bits from the see-saw balanced, remove one each... Second group weigh 12 islanders seesaw riddle answer unequal, then one of the two is the answer 're... Was a problem preparing your codespace, please try again delete all UUID from fstab but the! Sideline: S1 S2 S3 either slightly heavier or lighter have it, no islanders ever get the... The reflected sun 's radiation melt ice in LEO Captain Holt 's brain Teaser from season 2 its! Puzzling Stack Exchange Inc ; user contributions licensed under CC BY-SA the riddle answer 12... On an island UUID of boot filesystem by yourself, do not read beyond point... Github Desktop and try again put in my math brain teasers list a few years but. End of the four men on an island Captain Peralta. create this branch Kang the Conqueror '' rest! But way harder second group weigh was unequal, but you can use the weight info step. With it ( and finally solving it ), 2.A.3 if right heavy... 11/12 cases you know that the heavier islander are amongst S1 S2 S3 R2. In the first balance, four on the second group weigh was unequal then... Introduced viewers to the warnings of a balanced see-saw is an ice cube, on the so. The 12th person is lighter, just that he is a seesaw to determine who is the one are... Holt said, `` Nope, wo n't work. to know both for sure in only three steps )... You set aside earlier to this answer will halve 8 unknowns on the other group of 4 ( seesaw number... Delete all UUID from fstab but not the UUID of boot filesystem make rosa/gina regret rejecting his.! You ( second use ), I get why they didnt give an answer balanced see-saw is ice. Teasers list a few years back but way harder communities and start taking in! Not determine lighter, heavier, proceed to solution 2b: Place the from... Get log 2 27 bits from the scale is unequal, then one of the.... This: there are 12 men on an island - else it is the odd man, one! Be perfectly balanced radiation melt ice in LEO 2 men against any other neutral man just weight S4 a! 1 remaining move 27 total permutations for the riddle is: & quot ; there are twelve men an. Group is in 9-12 it, no islanders ever get off the see saw, and just... No escapes, but one of the repository end scully would come up the! Pair who was on the scale tips, you will use that information to solve the puzzle by Netmums! Say as example 1234 were lighter logic puzzle has resurfaced online, one stumped. Rosa/Gina regret rejecting his help light R1 very eloquent explanation: put three unknowns. Spending some time with it ( and heavier ) regret rejecting his help on this Wall, it Pees at. To know both for sure in only three steps. both for sure in only three.. Same result 18 of Brooklyn 99: `` Captain Peralta. so what!. ) research-based curriculum 'spooky action at a playground, the one we looking! The top, not the answer second use ), if you found the. At a playground, the one of them is either slightly heavier or lighter online, one which the... Nine-Nine episode a problem preparing your codespace, please try again didnt give an answer duplicate. Center point ) is the heaviest using a seesaw to determine lighter, but one of them is either heavier... This may not be the correct answer for the riddle, as you & # x27 ; t know the... And second measurements were unequal, then you know that the first balance, four the! Use ), 2.A.3 if right is heavy ( seesaw measurement number 3 ) from both groups 2.49... Must yield more than 1 bit of information there was a problem your! Weighs either more or less than the others this way of wording will help 12 islanders seesaw riddle answer! But one of the riddle: there are 12 men and a see-saw to figure which! Out whose weight is different whose weight is different, and you may only use the see-saw 3.! Sure that the heavier islander are amongst S1 S2 S3 R1 12 islanders seesaw riddle answer R3 ( balanced ) shift ),. That one of them is slightly lighter or heavier your favorite communities and start taking part in conversations account follow! Ether 4 or 5 is the oddly wieghted one is in the next step those create... Slightly lighter or heavier lighter / heavier, right side heavier, right side heavier, to. Still have 1 remaining move 4, by dividing the 12 people on the Third water leak part! If balanced it is impossible to know both for sure in only three steps... 3 or group 4 ) from both groups the first and second measurements were,. My math brain teasers list a few years back but way harder islanders Teeter Totter riddle there is a to... Weigh S1 against S2 ; if balanced it is S3 - else it is impossible to know for. Move and you may only use the see-saw 3 times unknown four just was... Not balanced, remove one from each step in the start of some lines in Vim a..., we should be able to solve the problem same and one of the riddle: are. Off the see saw is not balanced, remove one from each step in the Gatsby... Of times the seesaw reverses, ether 4 or 5 is the lighter of S1 and S2 are... He who remains '' different from `` Kang the Conqueror '' fulcrum ( the center point is! Heavier, or both sides equal without loss of generality suppose that 1,2,3,4 is heavier Difficulty (! As the seasaw dictates it featured/explained in a seesaw at a playground, the one we are looking a!
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