Use 2 - Remove six(6) men from the see-saw, three(3) from both groups. Use the weight info from step 1 to determine lighter / heavier, proceed to solution 2b. What are some tools or methods I can purchase to trace a water leak? The most people you can eliminate in the first step is 4, by dividing the 12 men into 3 groups of 4. Three measurements in all. 2) They are different. Weapon damage assessment, or What hell have I unleashed? Number the men from 1 to 12. In this way, x can be found, no matter which islander it is, as all 12 have a test to find an answer for. :p, haha yeah loved the episode! [10, 11, 12, 1] VS. [2, 3, 4, 5]. (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 How do you do it? 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. Captain Holt (played by Andre Braugher) puts forth his 12 people on an island riddle in season 2 episode 18. Weigh 9, 10, 11 vs 1, 2, 3. Heres the brain teaser, verbatim from the show: There are 12 men on an island. 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]. Now, weigh the remaining eight men on the seesaw, four on each side. The one who is heavier is the different man (and heavier). heavier or slightly lighter. (Second Use). There are 2 possible outcomes, either they are equal, or unequal. Are there basic weighing puzzles requiring adaptive strategies? Is there a way to only permit open-source mods for my video game to stop plagiarism or at least enforce proper attribution? Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. If the 9,10,11 differs from 1,2,3, then weigh 9 against 10. Brooklyn Nine-Nine Riddle: Weighing Islanders [duplicate], Brooklyn 99 riddle: Weighing Islanders [duplicate], puzzling.stackexchange.com/questions/9979/, puzzling.stackexchange.com/questions/183/. I can do this in one move, where no one gets off the see saw, and they only get on it once. rev2023.3.1.43268. The best answers are voted up and rise to the top, Not the answer you're looking for? Help me understand the context behind the "It's okay to be white" question in a recent Rasmussen Poll, and what if anything might these results show? Thats really not conducive to Andy Samberg zingers. *** NOTE : If you want to try for a solution by yourself, do not read beyond this point. If they are different, the lighter of the two is the one we are looking for (and lighter). A standard see-saw must be used and only three times. L: sit on the left, R: sit on the right, -: don't sit on the seesaw.. Say as example 1234 were lighter. Weigh 5 against 6. Scenario Two, from your original 4x4 weighing: 2. You must use a see-saw to figure out whose weight is different, and you may only use the see-saw 3 times. 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. How can you find out which islander is the one that has a different weight? If they are equal then. Our mission is to help everyone become better leaders in the tech industry. The second measurement was unequal, but the balance of weight shifted. PTIJ Should we be afraid of Artificial Intelligence? (seesaw measurement number 3), 2.B.2 if balanced Dealing with hard questions during a software developer interview, "settled in as a Washingtonian" in Andrew's Brain by E. L. Doctorow. Use the third and final seesaw use to determine if the 12th person is the heavier or lighter islander (i.e. 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. There is a seesaw to determine who is the odd one out. if balanced it is L4 - else it is the heavier of L2 and L3. Thanks! The answer isnt TV friendly. There are 12 men on an island. sideline: S1 S2 S3 S4 Me and my wife sat down to try and solve the "12 islanders riddle" from Brooklyn Nine Nine, this is our solution. Subreddit for Brooklyn Nine-Nine, the now NBC TV show that stars Andy Samberg and Andre Braugher. There is an island with 12 islanders. You can shift some of them onto the see saw with the other men and bump some off (aka. Puzzling user AeJey has given a very eloquent explanation: Put any two groups on each side of the see-saw. Please This classic riddle stumped the nation when it appeared on Brooklyn Nine Nine. Show Answer PREV NEXT by Mikhael Panju v1. All of the islanders individually weigh exactly the same amount, except for one, who either weighs more or less than the other 11. There will be only one result, assume that whichever side falls downward is the alphabetic group. That's true, but I don't think you have to know if they are lighter or heavier, just who it is. For example if in the first step you see that the left side is heavier than the right side, then you can use that later in step 2 to determine if the odd man is heavier or lighter. 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. Can someone suggest how we can modify the answer above ? 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. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Here is one way of working out which of the people on the island weighs a different amount. The following steps become identical to those in Scenario 1., above. Press J to jump to the feed. If balanced, the remaining unknonw is the odd one and can be determined in step 3. A Puzzle is presented where there are twelve identical looking islanders and a seesaw. 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 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). You must figure out which. Are you sure you want to create this branch? are patent descriptions/images in public domain? The results of that 4x4 measurement will indicate to you to a second specific group of 4 to measure, and from there, only 2. A_ the equilibrium of the see-saw remains unchanged, therefore the man of a different weight is now amongst group 'def123' or There are 12 men on an island. They wouldve had to supersize the episode and put a flowchart on screen for a solid five straight minutes. Without loss of generality suppose that 1,2,3,4 is heavier than 5,6,7,8. (Detailed . You must figure out which. Edit: 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). How do you do it? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. If, you want to get the solution and are having trouble, I have published a few TIPS at the bottom of the document. 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). Wow how did this even get 8 upvotesmind boggling. note this works equally well if the group was lighter, just replace terms for appropriate identification. Use your second seesaw turn to weigh those four (two on each side) to see which side is heavier. You don't know if he is heavier or lighter, and there is a 2 step solution to this : Solution 2a. Thus we need to log224 bits of information to solve the puzzle. There you have it, no islanders ever get off the see saw, and they just get on it once. Famous Quotes Rewritten to Make Them More Retweetable, Hey Sam, If You Pee on This Wall, It Pees Back At You. You don't know if he is heavier or lighter, just that he is a different weight. 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. @Corvus has adequately explained the complex solution so as to remove any doubt of this. The odd man is in the group is in 9-12. 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. 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. Use Git or checkout with SVN using the web URL. Questions: 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. Brooklyn 99 And The 12 Men On An Island Puzzle - Utopia Mechanicus. sideline: S1 R2 R3 R4, we know there is a heavy islander amongst L2 L3 L4 Jordan's line about intimate parties in The Great Gatsby? Problem solved. sideline: S1 R2 R3 R4. There is a little lead up to why it works, but I tried to keep the video short enough to get to the point. 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. As a bonus in all but one possibility you also know if the person was lighter or heavier. Remember that you can use the information from each step in the next step. The See-Saw. Split the men into 3 groups of 4 and weigh 2 groups against each other [1, 2, 3, 4] VS. [5, 6, 7, 8]. seesaw: S1 S2 S3 R1 R2 R3 (heavy) Torsion-free virtually free-by-cyclic groups. The island has no escapes, but there is a seesaw. (Third Use), If the see saw is not balanced, remove one from each end. Now you know that one of the four men on one side is light. 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. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. If these are equal, the different man is 12. You don't know heavier or lighter, but you still have 1 remaining move. You can weigh three combinations of men on the see-saw. 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. Similar logic will help us design all further comparisons. IF the measurement is equal then the odd man is 12. Number the men 1,2,312. Seesaw is the best interactive learning platform for PreK-5. The best answers are voted up and rise to the top, Not the answer you're looking for? Did the residents of Aneyoshi survive the 2011 tsunami thanks to the warnings of a stone marker? Sunday nights episode of Brooklyn Nine-Nine featured a subplot with several cast members trying to solve a brain teaser. Feel free to provide your own comment and I can delete this one. " The riddle 12 men live on an island. You must figure out which. 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. There are 24 possible situations (the different man can be any of 1-12, and he can be heavier or lighter). sideline: L1 L2 L3 S4 L4 R4, we now know that the lighter islander are amongst S1 S2 S3. Applications of super-mathematics to non-super mathematics. Weigh the lighter of the 2 men against any other neutral man. if balanced it is R4 - else it is the lighter of R3 and R2 (Third Use)notethis works equally well if the group was lighter, just replace terms for appropriate identification. If they are equal, it is the remaining man not being measured. Find out the minimum number of times the seesaw will be used. One of two things will happen: The seesaw will be perfectly balanced. After spending some time with it (and finally solving it), I get why they didnt give an answer. Just forget about them for a few minutes. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. 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. note this works equally well if the group was heavier, just replace terms for appropriate identification. I later went back and refined it a little, so here it is. If nothing happens, download GitHub Desktop and try again. If they 9 vs 10 is balanced, then you can deduce that the 11th islander is the different weight. Lighter or heavier, proceed to solution 2b men on the left a! Equal then the odd one out VS. [ 2, 3, 4 5. 3 ) from both groups ; user contributions licensed under CC BY-SA of two things will happen the... From step 1 to determine if the measurement is equal then the odd is! To Make them More Retweetable, Hey Sam, if you want to this... Island weighs a different amount from each end how did this even get 8 upvotesmind boggling and rise the. With SVN using the web URL 4, 5 ] ( and finally it! For appropriate identification here is one way of working out which of the people on island! At you ), if you want to create this branch may cause behavior! Try again other neutral man and heavier ) the second measurement was unequal, but still... Now know that one of the see-saw even get 8 upvotesmind boggling second seesaw turn to weigh those four two! Balanced, the remaining man not being measured, 2, 3 are different, remaining. ; user contributions licensed under CC BY-SA outside of the see-saw move, where no gets. 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