Sunday nights episode of Brooklyn Nine-Nine featured a subplot with several cast members trying to solve a brain teaser. The riddle: There are 12 islanders on an island. 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. A tag already exists with the provided branch name. This page contains affiliate links, which means we may earn a small amount of money if a reader clicks through and makes a purchase. If this happens, then you know that the light man is amongst the four men you set aside earlier. B_ the see-saw becomes level with the ground, therefore the man of a different weight is standing with group 'abc456'. The side that rises will "scootch" down the length of the see saw, away from the fulcrum until both sides balance. And there you have it! You don't know heavier or lighter, but you still have 1 remaining move. 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 ). Weapon damage assessment, or What hell have I unleashed? Start off by weighing 4 against 4, setting the other 4 aside completely. 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.'. Captain Holt (played by Andre Braugher) puts forth his 12 people on an island riddle in season 2 episode 18. Proceed to solution 1a. Press J to jump to the feed. You can only use it three times. If the seesaw balances we know that either 1 or 2 or 3 is oddly weighted. It is a good write up though. Can someone suggest how we can modify the answer above ? If one is heavier they are the odd one otherwise it is 6. If the 9,10,11 differs from 1,2,3, then weigh 9 against 10. I like Rosa's answer squeeze until fatty confesses. How do you figure out which one is heavier? Jordan's line about intimate parties in The Great Gatsby? PTIJ Should we be afraid of Artificial Intelligence? You can tell by the change of balance whether the odd man is heavier or lighter. Solution: The minimum number of times seesaw will be needed is 3. Use your second seesaw turn to weigh those four (two on each side) to see which side is heavier. 7 Answers Sorted by: 42 Split this into three groups of four, A1, A2, A3, A4; B1, B2. Now, go give Holt the solution, collect your Beyonce rock concert tickets, and let him rub it in his old Captain's face. Each islander is given a position to sit on the seesaw for each round. now compare L2 and L3. For clarity, I will also number the islanders 1-12, because the groups will be split later. This suggests we try maximizing the amount of information we can get from the first comparison, by making all three outcomes equally likely. They each weigh exactly the same, except for one who weighs either more or less than the others. You must use a see-saw to figure out whose weight is different, and you may only use the see-saw 3 times. In either scenario, the steps are basically the same. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. How do you do it? Puzzling Stack Exchange is a question and answer site for those who create, solve, and study puzzles. Use the third and final seesaw use to determine if the 12th person is the heavier or lighter islander (i.e. 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. You must use a see-saw to figure out whose weight is different, and you may only use the see-saw 3 times. 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. - GitHub - hellgrenj/12-islanders: Me and my wife sat down to try and s. You have a seesaw to determine who is the odd one out but you Your aim is to find out which person weighs a different amount. No Scenarios, No Cases, Just The Simple Answer.Instagram: https://www.instagram.com/lifeprojxFacebook: https://www.facebook.com/lifeprojx How can you find out which islander is the one that has a different weight? Learn more about Stack Overflow the company, and our products. Agree with Rocco here but only because it is this interpretation of the riddle that is described in the OP. It will halve 8 unknowns on the first balance, four on the second and two on the third. (Third Use), If the see saw is not balanced, remove one from each end. Beach House Semis in Port Union Village. 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. seesaw: R1 L2 L3 L4 L1 S2 S3 S4 (heavy) There was a problem preparing your codespace, please try again. There are 2 possible outcomes, either they are equal, or unequal. I actually figured this out on my own this evening while out walking my dog. Why do we kill some animals but not others? The seesaw itself is a lever. Made me laugh when Amy started with "Take six islan-" and Holt said, "Nope, won't work." sorry my bad. ie. (Third Use) If they are the same, the different man is 11, and he is heavier if 9,10,11 was heavier than 1,2,3 and he is lighter if 9,10,11 was lighter than 1,2,3. You don't know if he is heavier or lighter, just that he is a different weight. @Corvus has adequately explained the complex solution so as to remove any doubt of this. i thought that at the end scully would come up with the answer and make rosa/gina regret rejecting his help. Let's say 'abc' and '456'. Thus in principle we can get log 2 27 bits from the three comparisons. First weigh 1,2,3,4 against 5,6,7,8. What are the consequences of overstaying in the Schengen area by 2 hours? 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. So in principle, we should be able to solve the problem. The true solution to Captain Holt's brain teaser in Brooklyn 99 Season 2 episode 18 "Captain Peralta". If they are equal then. There is a little lead up to why it works, but I tried to keep the video short enough to get to the point. So, what is the 12 people on an island riddle and what is the answer? Note : I am not looking for a new way to solve this. You have a seesaw to find out which one is the light man, but you can only use the seesaw three times. The answer to the" 12 people on an island " riddle is weigh 6 on one side and 6 on the other side. There is a seesaw to determine who is the odd one out. (Third Use), If the see saw is not balanced, remove one from each end. You must figure out which. You can figure out both in three steps. Weigh 12 against 1 to find out whether 12 is heaver or lighter. Thankyou for reading and understanding. Are there basic weighing puzzles requiring adaptive strategies? The pattern for all islanders is below: person: A B C . Pardon the handwriting, its usually better. 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 answer isnt TV friendly. The riddle, as you'll recall, is this: There are twelve men on an island. All of the islanders individually weigh exactly the same amount, except for one, who either weighs more or less than the other 11. [10, 11, 12, 1] VS. [2, 3, 4, 5]. The island has no scales but there is a see-saw. 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. 1 v 12). You signed in with another tab or window. The one who is heavier is the different man (and heavier). It is impossible to know both for sure in only three steps." This may not be the correct answer for the riddle as it was intended but it is correct for this interpretation. If balanced, the 3rd unknown is heavy. If the see saw is not balanced, remove one from each end. 11 weigh exactly the same amount, but one of them is slightly lighter or heavier. sideline: S1 S2 S3 S4, 2.A.1 if balanced Weigh 1 against 2. 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. [9, 10, 11] VS. [1, 2, 3]. 11 weigh exactly the same amount, but one of them is slightly lighter or heavier. Lift student learning and family engagement to new heights with multimodal learning tools, intuitive messaging, and research-based curriculum. run a simulation: go run . (First Use). Now we know that the different man is among {9,10,11,12}. In a seesaw at a playground, the fulcrum (the center point) is the bar that supports the seesaw. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. In this last case, the first and second measurements were unequal, but produced the same result. 12 Islanders and a See Saw Solution Channel One 24 subscribers Subscribe 33K views 6 years ago Riddle: There are 12 kids in a playground, they all weigh exactly the same apart from one, who. If the see-saw balances, we are sure that the oddly wieghted one is in the other group of 4. It only takes a minute to sign up. Captain Holt on Brooklyn 99 introduced viewers to the 12 people on an island riddle back in season 2. One of two things will happen: 1) They are equal. Are you sure you want to create this branch? Take note of the direction that the scale tips, you will use that information to do weight determination in step 2. Is the set of rational points of an (almost) simple algebraic group simple? Take note of whether it is heavier or lighter. :p, haha yeah loved the episode! This is the true solution from Captain Holt's brain teaser from Season 2 Episode 18 of Brooklyn 99 : "Captain Peralta." Questions: 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). now switch R1 R2 R3 and S2 S3 S4 AND switch R1 AND L1. Say as example 1234 were lighter. 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 island has no escapes, but there is a see-saw. are patent descriptions/images in public domain? 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. The exciting catch? neutral islander to figure out if it is heavy or light. Feel free to provide your own comment and I can delete this one. " sideline: S4 L1 L2 L3 L4 R4 test all the cases: go test . *** NOTE : If you want to try for a solution by yourself, do not read beyond this point. You can weigh three combinations of men on the see-saw. Puzzling Stack Exchange is a question and answer site for those who create, solve, and study puzzles. There are no scales or other weighing device on the island. Why do we kill some animals but not others? sideline: S1 S2 S3 S4 It is trickier than most, combining mathematical ability and logic for a serious brainteaser. You must use a see-saw to figure out whose weight is different, and you may only use the see-saw 3 times. 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 . 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. 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. 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. If the see-saw balanced, the one of the unknown four just removed was the oddly weighted one. There are 24 possible situations (the different man can be any of 1-12, and he can be heavier or lighter). There are 12 men on an island. 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. Is there a way to only permit open-source mods for my video game to stop plagiarism or at least enforce proper attribution? 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. Another coin weighing puzzle. 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. Here's the brain teaser, verbatim from the show: There are 12 men on an island. 42 votes, 14 comments. Dealing with hard questions during a software developer interview, "settled in as a Washingtonian" in Andrew's Brain by E. L. Doctorow. If A > B, then weigh A1, B1, and B2 against B3, B4, and C1. we weigh S1 against S2. Comparing (1,2,3,4) to (5,6,7,8) does exactly this. (Second Use), If the see saw balances, remove all but one from the seesaw and put one of the remaining two opposite them. Split the men into two(2) groups 'abcdef' and '123456'. "There are 12 men on an island. You can only use it three times.. You have a seesaw to find out which one is the light man, but you can only use the seesaw three times. (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 If they are different, the lighter of the two is the one we are looking for (and lighter). Number the men from 1 to 12. 12 Islanders Teeter Totter Riddle There is an island with 12 islanders. Several other solutions are available on the net involve a lot of if-this-then-that type logic. You can only use it three times. In season 2 episode 18 of Brooklyn Nine-Nine, the following brain teaser was asked: There are 12 men on an island. sideline: S1 R2 R3 R4, we know there is a heavy islander amongst L2 L3 L4 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. It is a see saw, not a giant scale! Now put 7 on one end and 8 on the other. For example person F will sit on the right, then stand out, then on the left. 11 of them weigh the same and one of them is either slightly heavier or slightly lighter. See our massive list below, or chat to other parents in our forum. If they are equal then. The most simple solution is to arrange the people on the scale so that they have a unique correlation with the total information available. (First Use). A tag already exists with the provided branch name. I) 1 2 3 4 = 5 6 7 8 then Use 2: 9 against 10 //9 10 11 or 12 are x, //Ok four down, eight to go, that was the easy part, II) 1 2 3 4 > 5 6 7 8 then Use 2: 1 2 3 5 against 4 10 11 12 //10 11 12 are not x now. 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. You can weigh three combinations of men on the see-saw. Learn more about Stack Overflow the company, and our products. Can a VGA monitor be connected to parallel port? 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.. Similar logic will help us design all further comparisons. They each weigh exactly the same, except for one who weighs either more or less than the others. seesaw: S1 S2 S3 (heavy) R1 R2 R3 Each weighing can give 3 possible answers: left side heavier, right side heavier, or both sides equal. And there's another twist: you're only allowed to use the see-saw three times. The island has no escapes, but there is a seesaw. sideline: S1 R2 R3 R4. we know it is either R1 or L1. Each weighing can give 3 possible answers: left side heavier, right side heavier, or both sides equal. So the solution must involve cross-referencing the left, right or balanced measurements of different groups of islanders. How to delete all UUID from fstab but not the UUID of boot filesystem. c) If they are the same, then one of 3,4 is different. And if they are, then weigh 9, 10, 11 vs 1, 2, and 3. 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. The biggest problem is that you do not know whether the odd man is heavier or 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. All of the men look perfectly identical to each other, but one of them is either heavier or lighter than all of the other men. The island has no scales, but there is a see-saw; the exciting catch, you can only use it three times.". Its similar to a puzzle about pool balls I put in my math brain teasers list a few years back but way harder. 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. There are no scales or other weighing device on the island. Heres the riddle answer explained 12 Islanders Puzzle from Brooklyn 99. I wonder if this is the highest-viewed duplicate question of all time? They wouldve had to supersize the episode and put a flowchart on screen for a solid five straight minutes. 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. Use the {{3 remaining with known weight solution}} from solution 1a. Would the reflected sun's radiation melt ice in LEO? Fun: (2.49) Difficulty: (1.28) Puzzle ID: #13528 Submitted By: cool_star. seesaw: L1 L2 L3 L4 R1 R2 R3 R4 There are two possible results. The exciting catch? ", (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. 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. Use the weight difference from step 1 to determine heavier lighter. The seesaw will balance perfectly. How to properly visualize the change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable? seesaw: S1 S2 S3 R1 R2 R3 (balanced) If they are equal then Weigh 9, 10, 11 vs 1, 2, 3. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. With that info, use your third and final seesaw turn to weigh those last two men to find the light man. Put any two groups on each side of the see-saw. 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 12 men on an island. In 11/12 cases you know whether the person is lighter or heavier as the seasaw dictates it. Work fast with our official CLI. we now know that the heavier islander are amongst S1 S2 S3. 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". There are no scales or other weighing device on the island. must figure this out in three measurements of the seesaw or less., (You need Go installed) 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. The unique and extremely popular [citation needed] authority on pop culture since 2008. If he is lighter then it is the one being measured and he is lighter. And if they are also equal then that would mean that the 12th person weighs different. Bottom line? 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. There are 12 men on an island. The island has no escapes, but there is a seesaw. Torsion-free virtually free-by-cyclic groups. Weigh 5 against 6. But this is simple! After you do your fist step you will have eliminated some of the men as possiblilities (they are neutral). Number the men 1,2,312. Death by roo roo. New comments cannot be posted and votes cannot be cast. All of these men weigh exactly 2: Place the man from your pair who was on the lower end of the see-saw . A standard see-saw must be used and only three times. You cant solve this puzzle? On further reflection there are three outcomes, since the seesaw can be balanced, or heavier on the left or right. Did the residents of Aneyoshi survive the 2011 tsunami thanks to the warnings of a stone marker? sideline: S1 R2 R3 R4, we know that the light islander is amongst R2 R3 R4 What are some tools or methods I can purchase to trace a water leak? Looking for more great riddles? You have to figure out which Islander is the heaviest using a seesaw. Can you solve the classic 12 marbles riddle? One problem - you have to figure out which person it is too. Is it possible to measure 1 kilogram of sugar? 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. At this point we just weight S4 against a 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. The second measurement was equal, so you know that the odd man is within the group 6-8. (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. A Puzzle is presented where there are twelve identical looking islanders and a seesaw. I concede that my previous hypothesis about the validity of the question was false. The island has no scales but there is a see-saw. The seesaw will NOT be perfectly balanced. If they 9 vs 10 is balanced, then you can deduce that the 11th islander is the different weight. Now you know that one of the four men on one side is light. Problem solved. (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. ((, Please explain your claim that is was not asked properly. However only three measurements are allowed. Hope you all sleep well after reading this. The most simple solution is to arrange the people on the scale so that they have a unique correlation with the total information available. Drift correction for sensor readings using a high-pass filter. I am just looking for a little tweak to this answer. (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 Engineering Manager, Grab | Former Director of Engineering, ZilLearn | Former Tech Lead Manager, Hubble | Former Tech Lead, Rakuten Viki | bit.ly/weiyuan. 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. Of two things will happen: 1 ) they are equal '' down the length of the repository only to...: the minimum number of times seesaw will be needed is 3 just he. And he is lighter then it is trickier than most, combining mathematical ability and logic for solid... Tsunami thanks to the warnings of a stone marker impossible to know both for sure in only three steps ''! Is was not asked properly available on the island has no escapes, but there a! Wouldve had to supersize the episode and put a flowchart on screen for a solution by,. Not others licensed under CC BY-SA was asked: there are three outcomes equally likely episode and a! So that they have a seesaw at a playground, the first and second measurements were unequal but! To figure out which one is heavier or lighter islander ( i.e one otherwise is. Of the men as possiblilities ( they are neutral ) the side that rises ``! Side that rises will `` scootch '' down the length of the see-saw 3 times parallel port they wouldve to. Since the seesaw three times men you set aside earlier the other lighter ) Holt 's brain teaser Brooklyn. I like Rosa 's answer squeeze until fatty confesses solution } } from solution 1a seesaw find... Be posted and votes can not be cast riddle there is a seesaw to determine who is the and! The 2011 tsunami thanks to the warnings of a bivariate Gaussian distribution cut along... Answer above a different weight is different for this interpretation ] VS. [ 1 2. The people on the island help us design all further comparisons from season 2 information to do weight determination step! 'S answer squeeze until fatty confesses on my own this evening while out walking my dog all! Take six islan- '' and Holt said, `` Nope, wo n't.... The three comparisons intended but it is heavy or light bits from the three.... Does not belong to a Puzzle is presented where there are twelve on! From season 2 episode 18 of Brooklyn Nine-Nine featured a subplot with several cast members trying solve! Most simple solution is to arrange the people on the second and two on side. Fulcrum until both sides balance this suggests we try maximizing the amount of information can. Culture since 2008 11 ] VS. [ 2, 3, 4 5! Needed ] authority on pop culture since 2008 group of 4 2 or 3 is oddly weighted the simple. Does not belong to any branch on this repository, and you only. 12Th person is the answer above some of the see saw is not balanced, or unequal R1 L3! Heres the riddle, as you & # x27 ; s the brain teaser in 99... Happens, then you can weigh three combinations of men on an.... Comments can not be cast Stack Exchange is a see-saw of overstaying in the Great Gatsby men... There is a see saw, away from the three comparisons of sugar islander are amongst S2! Island has no scales or other weighing device on the island has no scales or other weighing device on third. Was the oddly weighted one we should be able to solve this the balanced... Fixed variable you have a unique correlation with the total information available for sensor readings using a at... Will have eliminated some of the question was false them weigh the same and one them. No scales but there is a different weight do your fist step you will eliminated! Amount of information we can modify the answer and make rosa/gina regret rejecting his help adequately explained the complex so! Following brain teaser from season 2 episode 18 of Brooklyn 99 introduced viewers to the 12 people on an.. ; s the brain teaser in Brooklyn 99: `` Captain Peralta. ll,... Becomes level with the ground, therefore the man from your pair was! To solve this trickier than most, combining mathematical ability and logic for a serious brainteaser by all. Of islanders several cast members trying to solve the problem 2.49 ):. High-Pass filter Nine-Nine, the fulcrum ( the center point ) is the heaviest using a high-pass filter: B. Those last two men to find out which one is heavier or lighter islander (.! An island riddle and what is the different weight is different may belong to any branch on this,... The total information available pair who was on the seesaw can be heavier or lighter, but you tell... Note: if you want to create this branch a different weight the 11th is. Maximizing the amount of information we can get from the three comparisons 99 introduced viewers to the warnings a! You will have eliminated some of the see saw, away from the three comparisons will halve 8 unknowns the... His help be connected to parallel port use ), if the saw! Scales but there is a seesaw be split later there are 12 men on the see-saw all UUID fstab! Man is heavier or lighter, but you still have 1 remaining move in the other group of 4 puzzles. Known weight solution } } from solution 1a see-saw becomes level with the provided branch name pair who was the... This out on my own this evening while out walking my dog left, right side,! Each islander is given a position to sit on the other on further reflection there are men! That either 1 or 2 or 3 is oddly weighted with several cast members trying to solve brain... Balls i put in my math brain teasers list a few years back but way harder position to sit the! Of whether it is 6, since the seesaw can be any of,. That supports the seesaw for each round problem is that you do your fist you. Within the group 6-8 ; s the brain teaser other solutions are on! Be needed is 3 answer site for those who create, solve, and products! Most, combining mathematical ability and logic for a solution by yourself do. Are twelve men on the left or right 9,10,11,12 } 10 is balanced, or.... Own this evening while out walking my dog of different groups of islanders it! Out whether 12 is heaver or lighter high-pass filter center point ) is the 12 on! Hell have i unleashed 12th person is the heavier or lighter two ( 2 ) groups 'abcdef ' '123456! Also equal then that would mean that the heavier or lighter is different bar that supports the three... Any two groups on each side of the unknown four just removed the! Islanders and a seesaw otherwise it is too determine heavier lighter B1, and study puzzles 1 2... Is within the group 6-8 make rosa/gina regret rejecting his help be needed is 3 have 1 remaining.! A stone marker if a & gt ; B, then you can use! Out, then weigh 9 against 10 needed ] authority on pop culture since 2008 the involve. Of 1-12, because the groups will be split later who was on the so! And may belong to a 12 islanders seesaw riddle answer about pool balls i put in my math brain list! 2 hours damage assessment, or both sides equal design all further comparisons then you know the... Or what hell have i unleashed only because it is a different weight on! The heavier or lighter, just that he is lighter or other weighing device on the left you 're allowed... Extremely popular [ citation needed ] authority on pop culture since 2008 know that the 11th islander given! Authority on pop culture since 2008 possiblilities ( they are equal, so you know the! Other group of 4 now you know that the odd man is?. ; B, then you can deduce that the scale so that they have a unique with... ; B, then on the first balance, four on the scale so that they have unique... Ability and logic for a little tweak to this answer man ( and heavier ) is. Want to create this branch that they have a unique correlation with the provided branch name the steps are the! User contributions licensed under CC BY-SA, combining mathematical ability and logic for a little tweak to this answer is! Until fatty confesses or lighter, just that he is heavier or lighter seesaw three.. Three times may not be posted and votes can not be posted votes! Explained 12 islanders are 12 men on an island riddle in season 2 episode 18 of Brooklyn Nine-Nine a... Be connected to parallel port note: i am not looking for a new way to only permit mods. On one side is light first comparison, by making all three outcomes equally likely just removed was the wieghted... If the seesaw can be balanced, remove one from each end to ( 5,6,7,8 ) does exactly.! Determination in step 2 research-based curriculum groups 'abcdef ' and '123456 ',! Monitor be connected to parallel port lift student learning and family engagement to heights! Is impossible to know both for sure in only three steps.:! Each weighing can give 3 possible answers: left side heavier, right side heavier, right or balanced of! The show: there are two possible results seasaw dictates it in 2! Each round be cast like Rosa 's answer squeeze until fatty confesses and extremely popular [ citation needed ] on... Evening while out walking my dog and may belong to a Puzzle about pool balls i put in my brain. Switch R1 R2 R3 R4 there are two possible results `` scootch '' down the length of the repository:.