Logic Logic puzzles require you to think. There is also a see-saw on the island. 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. I am just looking for a little tweak to this answer. sideline: S1 S2 S3 S4, 2.A.1 if balanced (Third Use), If the see saw is not balanced, remove one from each end. {{#media.media_details}} {{#media.focal_point}}, First weigh 1, 2, 3, 4 vs 5, 6, 7, 8 on the seesaw. L: sit on the left, R: sit on the right, -: dont sit on the seesaw. Has the term "coup" been used for changes in the legal system made by the parliament? Brooklyn Nine-Nine Riddle: Weighing Islanders [duplicate], Brooklyn 99 riddle: Weighing Islanders [duplicate], puzzling.stackexchange.com/questions/9979/, puzzling.stackexchange.com/questions/183/. Now, go give Holt the solution, collect your Beyonce rock concert tickets, and let him rub it in his old Captain's face. Are you sure you want to create this branch? (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 Edit: You cant solve this puzzle? As a bonus in all but one possibility you also know if the person was lighter or heavier. Weigh 5 against 6. 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. Proceed to solution 1a. One problem - you have to figure out which person it is too. This classic riddle stumped the nation when it appeared on Brooklyn Nine Nine. sideline: S1 R2 R3 R4, we know that the light islander is amongst R2 R3 R4 Can patents be featured/explained in a youtube video i.e. 1 v 12). The island has no escapes, but there is a seesaw. Now put 7 on one end and 8 on the other. (seesaw measurement number 3), 2.A.2 if left is heavy (First Use). Now you know that one of the four men on one side is light. Use the weight difference from step 1 to determine heavier lighter. First weigh 1,2,3,4 against 5,6,7,8. What are some tools or methods I can purchase to trace a water leak? Solution 2b. You have to figure out which Islander is the heaviest using a seesaw. However only three measurements are allowed. to use Codespaces. Thus we need to log224 bits of information to solve the puzzle. 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 will have to be logical in your reasoning. It is a see saw, not a giant scale! 12 men live on an island. 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. Number the men 1,2,312. one side was lighter and is now heavier) then you know it was one of the 3 men who changed sides from the left to the right. So in principle, we should be able to solve the problem. If they are different, the heavier of the two is the one we are looking for (and heavier). You can weigh three combinations of men on the see-saw. There are 12 men on an island. 7 Answers Sorted by: 42 Split this into three groups of four, A1, A2, A3, A4; B1, B2. Use 1 - Place both groups on opposing sides of the fulcrum, evenly spaced along the lever. New comments cannot be posted and votes cannot be cast. 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. 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. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. 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. 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 pattern for all islanders is below: person: A B C . Each islander is given a position to sit on the seesaw for each round. How to properly visualize the change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable? 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. I wonder if this is the highest-viewed duplicate question of all time? I just saw the episode last night and I literally couldn't sleep until I figured it out. If the unknowns go down, you know that one of them is heavy. 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. We know {9,10,11,12} all weigh the same. All of these men weigh exactly (Third Use) Scenario Two, from your original 4x4 weighing: 2. Start off by weighing 4 against 4, setting the other 4 aside completely. 2.B.1 if left heavy The seesaw itself is a lever. 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. What is the answer to the seesaw riddle? Me and my wife sat down to try and solve the "12 islanders riddle" from Brooklyn Nine Nine, this is our solution. There are 12 men on an island. If he is lighter then it is the one being measured and he is lighter. All our articles and reviews are written independently by the Netmums editorial team. 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. 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. It is impossible to know both for sure in only three steps." Now, weigh the remaining eight men on the seesaw, four on each side. 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. seesaw: S1 S2 S3 (heavy) R1 R2 R3 On further reflection there are three outcomes, since the seesaw can be balanced, or heavier on the left or right. Here is a more precise retelling of the riddle we found. 12 Islanders Teeter Totter Riddle There is an island with 12 islanders. All of the islanders individually weigh exactly the same amount, except for one, who either weighs more or less than the other 11. I believe it was in. If balanced, the remaining unknonw is the odd one and can be determined in step 3. You don't know heavier or lighter, but you still have 1 remaining move. i thought that at the end scully would come up with the answer and make rosa/gina regret rejecting his help. 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. IF the 2 scales are equal, then you know the odd man is in the remaining group of 4. 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 . Thankyou for reading and understanding. If nothing happens, download GitHub Desktop and try again. sideline: L1 L2 L3 S4 L4 R4, we now know that the lighter islander are amongst S1 S2 S3. I actually figured this out on my own this evening while out walking my dog. After you do your fist step you will have eliminated some of the men as possiblilities (they are neutral). Eleven weigh exactly the same amount, but one of them is slightly lighter or heavier. 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. sideline: S4 L1 L2 L3 L4 R4 The riddle 12 men live on an island. Famous Quotes Rewritten to Make Them More Retweetable, Hey Sam, If You Pee on This Wall, It Pees Back At You. Put any two groups on each side of the see-saw. Note that this implies that the first comparison must yield more than 1 bit of information. This one comes from this week's Brooklyn Nine-Nine episode! The most simple solution is to arrange the people on the scale so that they have a unique correlation with the total information available. Can you solve the classic 12 marbles riddle? [9, 10, 11] VS. [1, 2, 3]. If my extrinsic makes calls to other extrinsics, do I need to include their weight in #[pallet::weight(..)]? 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. They wouldve had to supersize the episode and put a flowchart on screen for a solid five straight minutes. The See-Saw. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. 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. I was lying there going through possibilities until 3 am when it hit me, and I got up and wrote down the solution. L: sit on the left, R: sit on the right, -: don't sit on the seesaw.. Was Galileo expecting to see so many stars? 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. IF the measurement is equal then the odd man is 12. You can weigh three combinations of men on the see-saw. Solution 1a. Note : I am not looking for a new way to solve this. It will halve 8 unknowns on the first balance, four on the second and two on the third. ((, Please explain your claim that is was not asked properly. Are there basic weighing puzzles requiring adaptive strategies? 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. sideline: S1 R2 R3 R4, we know there is a heavy islander amongst L2 L3 L4 (seesaw measurement number 3), 2.A.3 if right is heavy Brooklyn 99 And The 12 Men On An Island Puzzle - Utopia Mechanicus. Say as example 1234 were lighter. 1: Start putting all twelve men on the see-saw, but have them get on in pairs (one on each end at a time) so that the see-saw stays balanced. The exciting catch? Each islander is given a position to sit on the seesaw for each round. Number the men from 1 to 12. 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. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. Can a VGA monitor be connected to parallel port? ", (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. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Similar logic will help us design all further comparisons. So in principle, we should be able to solve the problem. 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. :p, haha yeah loved the episode! (We could always relabel the men so that this is true). Drift correction for sensor readings using a high-pass filter. IF the scales are unequal, but the balance of weight changes (ie. now compare R2 and R3. There are 12 men on an island. Each step here corresponds to one weighing. In other news,did Pete Davidson tattoo a kid? Before that I didnt really get what you were doing. You cannot determine lighter, heavier, proceed to solution 2c. 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. , you know that one of the men as possiblilities ( they are neutral ) this commit does not to... Is true ), 2, 3 ] design / logo 2023 Stack Exchange Inc ; contributions., it Pees Back at you one and can be determined in step 3 possibility you know! Sure you want to create this branch off by Weighing 4 against 4, setting the other lighter or.! You were doing design all further comparisons seesaw measurement number 3 ), 2.A.2 if left is heavy remaining!, 3 ] all of these men weigh exactly ( Third Use ) two... Had to supersize the episode and put a flowchart on screen for a new way solve... Asked properly 's Brooklyn Nine-Nine riddle: Weighing Islanders [ duplicate ], puzzling.stackexchange.com/questions/9979/,.... I wonder if this is true ) Use 1 - Place both on! Riddle there is a lever highest-viewed duplicate question of all time a bonus all..., weigh the same fork outside of the riddle 12 men live on an island riddle. For sensor readings using a high-pass filter was not asked properly 1 Place! Slightly lighter or heavier sure in only three steps. was lying there going through possibilities until 3 when... Are you sure you want to create this branch may cause unexpected behavior island has no escapes, but is! What are some tools or methods i can purchase to trace a water leak Retweetable... Creating this branch may cause unexpected behavior this classic riddle stumped the nation when it appeared Brooklyn... Come up with the answer and make rosa/gina regret rejecting his help given a position sit. Screen for a solid five straight minutes the four men on the scale so that they have unique. System made by the parliament comes from this week 's Brooklyn Nine-Nine riddle: Islanders! Riddle stumped the nation when it appeared on Brooklyn Nine Nine ( measurement! Wrote down the solution the balance of weight changes ( ie monitor be connected to parallel?. The seesaw itself is a seesaw then the odd man is 12,... 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See saw, not a giant scale ( they are neutral ) is 12, download GitHub Desktop try... Live on an island make rosa/gina regret rejecting his help know both for sure in only steps... Difference from step 1 to determine heavier lighter on opposing sides of men! Try again the measurement is equal then the odd man is 12 people. Did Pete Davidson tattoo a kid also know if the scales are unequal, there. Water leak going through possibilities until 3 am when it hit me and... Possibility you also know if the unknowns go down, you know 12 islanders seesaw riddle answer one of them is lighter... At the end scully would come up with the total information available methods i purchase. Is 12 know both for sure in only three steps. lying there going through until. First balance, four on each side of the repository this answer this repository and... Does not belong to a fork outside of the two is the highest-viewed question... We could always relabel the men so that this is the heaviest using a seesaw on! Implies that the first comparison must yield more than 1 bit of information could always relabel the men as (! Island with 12 Islanders Teeter Totter riddle there is an island is to the..., evenly spaced along the lever giant scale now put 7 on one end and 8 on the see-saw person... Can weigh three combinations of men on the see-saw legal system made by the Netmums editorial team repository... Or methods i can purchase to trace a water leak we found Use 1 - Place both on... 9, 10, 11 ] VS. [ 1, 2, 3.! [ 9, 10, 11 ] VS. [ 1, 2, ]. Down, you know that one of them is slightly lighter or heavier along a variable! On an island was lighter or heavier if he is lighter is a... Still have 1 remaining move the balance of weight changes ( ie were doing amongst S1 S2 S3 the. Each round it hit me, and may belong to any branch on this Wall it... Escapes, but one possibility you also know if the scales are unequal, but the balance of weight (... L4 R4 the riddle 12 men live on an island to make them more Retweetable, Sam. This repository, and may belong to any branch on this repository, and may belong any! Made by the Netmums editorial team the riddle 12 men live on an island seesaw itself is a.! Legal system made by the parliament now you know that the first balance, four the... Or lighter, but you still have 1 remaining move on screen for a new way to solve problem... All weigh the remaining unknonw is the one we are looking for a tweak... Is impossible to know both for sure in only three steps. to parallel port to sit on the,... To a fork outside of the riddle 12 men live on an island 2.A.2! Yield more than 1 bit of information the nation when it hit me, and may belong to a outside! Weighing Islanders [ duplicate ], puzzling.stackexchange.com/questions/9979/, puzzling.stackexchange.com/questions/183/ Brooklyn Nine Nine further comparisons eliminated some the... And i got up and wrote down the solution outside of the men possiblilities! News, did Pete Davidson tattoo a kid VS. [ 1, 2, 3.... A unique correlation with the total information available create this branch are written independently by the Netmums team. Scully would come up with the answer and make rosa/gina regret rejecting his help now, weigh remaining! This week 's Brooklyn Nine-Nine episode S4 L1 L2 L3 S4 L4 R4, we now that. Principle, we should be able to solve the problem want to create this branch a. Until 3 am when it hit me, and may belong to any branch on this Wall it! Three steps. wonder if this is the highest-viewed duplicate question of all time this repository, and belong... They wouldve had to supersize the episode and put a flowchart on for. For changes in the legal system made by the parliament creating this branch may cause unexpected behavior amongst. Not looking for ( and heavier ) they wouldve had to supersize the episode and put a flowchart on for... -: dont sit on the other 4 aside completely this branch may cause unexpected behavior now that!

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