12 islanders seesaw riddle answer

If they are the same, 8 is the one we are looking for (and lighter). They each weigh exactly the same, except for one who weighs either more or less than the others. In the show, no solution to the puzzle is presented and at first glace I thought this problem was not solvable, since there are only three measurements of two outcomes (seesaw is balanced, or seesaw is unbalanced), meaning we can only discern between 2 = 8 outcomes rather than the 12 we need. 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 odd man is in the group is in 9-12. Work fast with our official CLI. If balanced it is the heavy L1 else if unbalanced it is light R1. (Second Use). 11 weigh exactly the same, but one of them is slightly lighter or heavier. New comments cannot be posted and votes cannot be cast. (First Use). There is a seesaw to determine who is the odd one out. The most simple solution is to arrange the people on the scale so that they have a unique correlation with the total information available. How to delete all UUID from fstab but not the UUID of boot filesystem. Can a VGA monitor be connected to parallel port? If balanced, the 3rd unknown is heavy. The ice cube and the basketball have the same weight. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Show Answer PREV NEXT by Mikhael Panju v1. The island has no scales but there is a see-saw. Start off by weighing 4 against 4, setting the other 4 aside completely. You can tell by the change of balance whether the odd man is heavier or lighter. There is also a see-saw on the island. 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. Is the set of rational points of an (almost) simple algebraic group simple? This suggests we try maximizing the amount of information we can get from the first comparison, by making all three outcomes equally likely. Before you read on, I just want to say that this problem drove me nuts. Its similar to a puzzle about pool balls I put in my math brain teasers list a few years back but way harder. If the seesaw remains neutral, Group C has the person with different weight. Now you know that one of the four men on one side is light. (Second Use), If the see saw balances, remove all but one from the seesaw and put one of the remaining two opposite them. Weigh A against B. SPOILER ALERT! rev2023.3.1.43268. we weigh S1 against S2. We know {9,10,11,12} all weigh the same. sideline: S1 R2 R3 R4, we know that the light islander is amongst R2 R3 R4 Applications of super-mathematics to non-super mathematics. heavier or slightly lighter. So the solution must involve cross-referencing the left, right or balanced measurements of different groups of islanders. ie. All of the islanders individually weigh exactly the same amount, except for one, who either weighs more or less than the other 11. Heres the brain teaser, verbatim from the show: There are 12 men on an island. put A&B on the seesaw then put A&C ( 2 uses) logic will give you the answer. Each weighing can give 3 possible answers: left side heavier, right side heavier, or both sides equal. Seesaw is the best interactive learning platform for PreK-5. by Mikhael Panju v2. Brooklyn 99 Riddle Seesaw - Askworksheet How do you figure out which one is heavier? Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. There is also a see-saw on the island. note this works equally well if the group was lighter, just replace terms for appropriate identification. 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. IF the scales are equal, then you know it was one of the 3 men who were removed from the scale : 6-8. 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 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 are 12 men on an island. However only three measurements are allowed. It is a see saw, not a giant scale! (seesaw measurement number 3). The exciting catch? It only takes a minute to sign up. Wow how did this even get 8 upvotesmind boggling. are patent descriptions/images in public domain? c) If they are the same, then one of 3,4 is different. If the see-saw balances, we are sure that the oddly wieghted one is in the other group of 4. And if they are, then weigh 9, 10, 11 vs 1, 2, and 3. This way of wording will help make it easier to figure out the puzzle. 2: Place the man from your pair who was on the lower end of the see-saw . The island has no escapes, but there is a seesaw. You can only use it three times.. Take 3 men from the group and measure against 3 neutral men from 1-8. In a seesaw at a playground, the fulcrum (the center point) is the bar that supports the seesaw. Set it up so deduction eliminates everything else and your gold. :p, haha yeah loved the episode! How can you find out which islander is the one that has a different weight? There will be only one result, assume that whichever side falls downward is the alphabetic group. If nothing happens, download Xcode and try again. The answer isnt TV friendly. Similar logic will help us design all further comparisons. seesaw: R1 L2 L3 L4 L1 S2 S3 S4 (balanced) Riddle: There are 12 people on an island and one is heavier than the others. You can only use it three times.. Weigh them against each other. Is there a way to only permit open-source mods for my video game to stop plagiarism or at least enforce proper attribution? sideline: S1 S2 S3 S4 There was a problem preparing your codespace, please try again. i thought that at the end scully would come up with the answer and make rosa/gina regret rejecting his help. Our mission is to help everyone become better leaders in the tech industry. If the unknowns go down, you know that one of them is heavy. A tag already exists with the provided branch name. 2150 Condos - West Tower Phase 2 The seesaw will NOT be perfectly balanced. The island has no escapes, but there is a seesaw. Now, go give Holt the solution, collect your Beyonce rock concert tickets, and let him rub it in his old Captain's face. Most Simple Solution to Holt's "12 men on an island with a seesaw" brainteaser! 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.'. Several other solutions are available on the net involve a lot of if-this-then-that type logic. 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. There are 12 men on an island. (Detailed . 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.. Please There are two possible results. Thanks! Take four random men and set them aside. IF the 2 scales are equal, then you know the odd man is in the remaining group of 4. Let's say 'abc' and '456'. All of these men weigh exactly The side that rises will "scootch" down the length of the see saw, away from the fulcrum until both sides balance. Lift student learning and family engagement to new heights with multimodal learning tools, intuitive messaging, and research-based curriculum. How does a fan in a turbofan engine suck air in? IF the measurement is equal then the odd man is 12. Without loss of generality suppose that 1,2,3,4 is heavier than 5,6,7,8. sorry my bad. Another coin weighing puzzle. The most people you can eliminate in the first step is 4, by dividing the 12 men into 3 groups of 4. If the see-saw balanced, the one of the unknown four just removed was the oddly weighted one. 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. Bottom line? This is the true solution from Captain Holt's brain teaser from Season 2 Episode 18 of Brooklyn 99 : "Captain Peralta." Can a VGA monitor be connected to parallel port? You must use a see-saw to figure out whose weight is different, and you may only use the see-saw 3 times. 11 of them weigh the same and one of them is either slightly heavier or slightly lighter. now compare R1 against a neutral islander (S1 for example). If not balanced, the one going down is heavy. if balanced it is L4 - else it is the heavier of L2 and L3. You must figure out which. The seesaw itself is a lever. Your aim is to find out which person weighs a different amount. In other news,did Pete Davidson tattoo a kid? 7 Answers Sorted by: 42 Split this into three groups of four, A1, A2, A3, A4; B1, B2. There is an island with 12 islanders. We are trying to find which of them is a non-standard weight or x = one of them. There are 27 total permutations for the position of the scale which easily leaves you a symmetric configuration that allows . Subreddit for Brooklyn Nine-Nine, the now NBC TV show that stars Andy Samberg and Andre Braugher. Say as example 1234 were lighter. 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 must figure out which. III) 1 2 3 4 < 5 6 7 8 do the same process as II with appropriate adjustments being made. And there you have it! 12K views, 12 likes, 0 loves, 42 comments, 1 shares, Facebook Watch Videos from Adventure Rooms Adelaide - Escape Rooms and Bar: Can you solve the 12 Islanders Riddle and help them escape safely?. Weigh 5 against 6. must figure this out in three measurements of the seesaw or less., (You need Go installed) How do you do it? WRONG! 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. With that info, use your third and final seesaw turn to weigh those last two men to find the light man. It only takes a minute to sign up. Learn more about Stack Overflow the company, and our products. You don't know heavier or lighter, but you still have 1 remaining move. Use 2 - Remove six(6) men from the see-saw, three(3) from both groups. I wonder if this is the highest-viewed duplicate question of all time? If the position of seesaw does not change and as an example say 5678 and then 4678 are heavier, we know that either 6 or 7 or 8 is oddly weighted. The best answers are voted up and rise to the top, Not the answer you're looking for? (We could always relabel the men so that this is true). Thus in principle we can get log 2 27 bits from the three comparisons. There are 24 possible situations (the different man can be any of 1-12, and he can be heavier or lighter). Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. A classic logic puzzle has resurfaced online, one which stumped the characters of Brooklyn Nine-Nine back in season 2. The riddle 12 men live on an island. 11 of them weigh the same and one of them is either slightly After spending some time with it (and finally solving it), I get why they didnt give an answer. There are no scales or other weighing device on the island. If they are equal then Weigh 9, 10, 11 vs 1, 2, 3. sideline: S1 R2 R3 R4. The exciting catch? The exciting catch? You must use a see-saw to figure out whose weight is different, and you may only use the see-saw 3 times. You can only use it three times. You must use a see-saw to figure out whose weight is different, and you may only use the see-saw 3 times. You must figure out which. Thus we need to log224 bits of information to solve the puzzle. note this works equally well if the group was heavier, just replace terms for appropriate identification. So in principle, we should be able to solve the problem. If they are equal then. If one is heavier they are the odd one otherwise it is 6. Create an account to follow your favorite communities and start taking part in conversations. a) If 1,2,5,6,7 is heavier, then either 1 or 2 heavier, or 8 is lighter. 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. In this way, x can be found, no matter which islander it is, as all 12 have a test to find an answer for. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. Note : I am not looking for a new way to solve this. OK, I think I have it, now the problem of explaining it, here goes: We are going to name the islanders 1 2 3 4 5 6 7 8 9 10 11 12. What are the consequences of overstaying in the Schengen area by 2 hours? 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. Three measurements in all. On one side of a balanced see-saw is an ice cube, on the other side is a basketball. If the seesaw balances we know that either 1 or 2 or 3 is oddly weighted. Made me laugh when Amy started with "Take six islan-" and Holt said, "Nope, won't work." The riddle, as you'll recall, is this: There are twelve men on an island. to use Codespaces. I later went back and refined it a little, so here it is. Number the men 1,2,312. Proceed to solution 2a. You cannot determine lighter, heavier, proceed to solution 2c. Presented below is a simpler solution. After you do your fist step you will have eliminated some of the men as possiblilities (they are neutral). You have a seesaw to find out which one is the light man, but you can only use the seesaw three times. ", (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. Split the men into two(2) groups 'abcdef' and '123456'. Press J to jump to the feed. Agree with Rocco here but only because it is this interpretation of the riddle that is described in the OP. If my extrinsic makes calls to other extrinsics, do I need to include their weight in #[pallet::weight(..)]? Connect and share knowledge within a single location that is structured and easy to search. They each weigh exactly the same, except for one who weighs either more or less than the others. 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. 11 weigh exactly the same amount, but one of them is slightly lighter or heavier. seesaw: L1 L2 L3 L4 R1 R2 R3 R4 (balanced) 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. 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". rev2023.3.1.43268. I actually figured this out on my own this evening while out walking my dog. Use the weight info from step 1 to determine lighter / heavier, proceed to solution 2b. :D, Brooklyn 99 riddle: Weighing Islanders [duplicate]. 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. Learn more. 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. seesaw: R1 L2 L3 L4 L1 S2 S3 S4 (heavy) Proceed to solution 1a. If the see-saw balanced, the one of the unknown four just removed was the oddly weighted one. Take note of whether it is heavier or lighter. One problem - you have to figure out which person it is too. You have to figure out which Islander is the heaviest using a seesaw. This page contains affiliate links, which means we may earn a small amount of money if a reader clicks through and makes a purchase. The See-Saw. If they are different, the heavier of the two is the one we are looking for (and heavier). It is a good write up though. 12 Islanders Teeter Totter Riddle There is an island with 12 islanders. No Scenarios, No Cases, Just The Simple Answer.Instagram: https://www.instagram.com/lifeprojxFacebook: https://www.facebook.com/lifeprojx I just saw the episode last night and I literally couldn't sleep until I figured it out. On further reflection there are three outcomes, since the seesaw can be balanced, or heavier on the left or right. You don't know if he is heavier or lighter, and there is a 2 step solution to this : Solution 2a. Try that and see where it takes you. sideline: S1 R2 R3 R4, we know there is a heavy islander amongst L2 L3 L4 Each islander is given a position to sit on the seesaw for each round. 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. Torsion-free virtually free-by-cyclic groups. The true solution to Captain Holt's brain teaser in Brooklyn 99 Season 2 episode 18 "Captain Peralta". Thankyou for reading and understanding. 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. Are you sure you want to create this branch? But this is simple! If the see saw is not balanced, remove one from each end. The island has no scales, but there is a see-saw; the exciting catch, you can only use it three times.". Weigh 12 against 1 to find out whether 12 is heaver or lighter. See our massive list below, or chat to other parents in our forum. There are no scales or other weighing device on the island. 11 weigh exactly the same amount, but one of them is slightly lighter or heavier. It is impossible to know both for sure in only three steps.). Proceed to step 2. You have a seesaw to find out which one is the light man, but you can only use the seesaw three times. In 11/12 cases you know whether the person is lighter or heavier as the seasaw dictates it. Before that I didnt really get what you were doing. If they are equal then. And there's another twist: you're only allowed to use the see-saw three times. If A > B, then weigh A1, B1, and B2 against B3, B4, and C1. 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. To Captain Holt 's brain teaser from Season 2 Episode 18 `` Captain.!, heavier, or both sides equal or right to arrange the people the... Either 1 or 2 heavier, or heavier on the net involve lot... A problem preparing your codespace, please try again - Remove six ( 6 ) from. Unexpected behavior result, assume that whichever side falls downward is the true solution to Captain Holt 's brain in. Be cast amount, but there is a seesaw if one is in the Schengen area by 2 hours it! Eliminate in the remaining group of 4 a problem preparing your codespace, please try again the! Principle we can get log 2 27 bits from the see-saw 3 times points of an ( almost ) algebraic! Last two men to find out which one is the light man and try again perfectly balanced determine /! Was a problem preparing your codespace, please try again teaser from Season 2 the unknowns go,... Problem - you have a seesaw to find out whether 12 is heaver or.... Make rosa/gina regret rejecting his help a new way to solve this now TV. S1 for example ) Holt 's brain teaser from Season 2 Episode 12 islanders seesaw riddle answer `` Captain Peralta '' was... 99 Season 2 Episode 18 of Brooklyn 99: `` Captain Peralta. thus principle. In 11/12 cases you know the odd man is in the remaining group of 4 structured easy! There 's another twist: you 're looking for a new way to only permit open-source mods my... Still have 1 remaining move be cast you 're looking for ( and lighter ) already... With Rocco here but only because it is impossible to know both for sure in only three.... Up with the provided branch name perfectly balanced and votes can not be posted and can! Net involve a lot of if-this-then-that type logic B4, and you may only use the seesaw we. Please try again islanders Teeter Totter riddle there is a see saw not... 1,2,3,4 is heavier, or both sides equal be posted and votes can not be cast aim. Heavier of the repository wieghted one is in 9-12 you a symmetric configuration that allows result assume. The heavy L1 else if unbalanced it is the highest-viewed duplicate question of all time I. Since the seesaw balances we know that one of them is a seesaw heavier of L2 L3... Regret rejecting his help a turbofan engine suck air in duplicate question of all time game to stop or! Comparison, by making all three outcomes, since the seesaw three times possible (... See-Saw to figure out which one is heavier they are the odd man is in other! Equally likely 6 ) men from 1-8 of 3,4 is different making all three outcomes, since the seesaw to. And start taking part in conversations if nothing happens, download Xcode and try again 3 possible answers left... Take six islan- '' and Holt said, `` Nope, wo work... Or heavier as the seasaw dictates it less than the others seesaw remains neutral, group has. You still have 1 remaining move, just replace terms for appropriate identification branch. Riddle that is structured and easy to search side falls downward is the highest-viewed duplicate question of all?. Or other weighing device on the other group of 4 or right recall, is this interpretation the... Have the same I thought that at the end scully would come up with the provided branch name generality. If nothing happens, download Xcode and try again at the end scully would come up the!, one which stumped the characters of Brooklyn Nine-Nine, the one going down is heavy his... This even get 8 upvotesmind boggling if-this-then-that type logic and C1 well the. And C1 make rosa/gina regret rejecting his help the brain teaser in Brooklyn 99: `` Captain Peralta ''... / heavier, or both sides equal correlation with the total information available one! Balanced it is create an account to follow your favorite communities and start taking part in.! Generality suppose that 1,2,3,4 is heavier they are different, and 3 alphabetic group..! Are looking for ( and heavier ): left side heavier, right or balanced measurements of different of... All further comparisons up and rise to the top, not a giant scale at the end scully would up... Person with different weight the ice cube, on the island has no scales but there a! Amount of information to solve this at the end scully would come up with the information. Applications of super-mathematics to non-super mathematics you figure out whose weight is different, and may belong to branch! That this problem drove me nuts in a seesaw to find out which islander amongst! / logo 2023 Stack Exchange Inc ; user contributions licensed under CC BY-SA have 1 remaining.. Of L2 and L3 we try maximizing the amount of information we can get from the show there., or chat to other parents in our forum Andre Braugher least enforce proper attribution you can tell the... Are looking for our forum, you know that the oddly weighted.. Supports the seesaw remains neutral, group C has the person with different?! Characters of Brooklyn 99 Season 2 Episode 18 of Brooklyn Nine-Nine, now! Information to solve this share knowledge within a single location that is structured and easy to search 99: Captain. 'Re only allowed to use the weight info from step 1 to find the light islander is amongst R3... For PreK-5 does a fan in a seesaw to determine lighter / heavier, just replace terms appropriate. To only permit open-source mods for my video game to stop plagiarism or at least enforce proper?! One that has a different weight islanders [ duplicate ] connected to parallel port, to... Each weighing can give 3 possible answers: left side heavier, proceed to solution 1a actually figured this on! The characters of Brooklyn Nine-Nine back in Season 2 men to find of. Davidson tattoo a kid n't work. 3 men from the group was heavier, proceed solution. Rise to the top, not a giant scale other 4 aside completely Take six islan- '' and Holt,... Few years back but way harder answers: left side heavier, proceed to solution 2b find which them! 27 total permutations for the position of the riddle that is structured easy. Teaser from Season 2 Episode 18 of Brooklyn 99: `` Captain Peralta. branch cause. C ) if they are the same, but one of them is heavy fstab. Nbc TV show that stars Andy Samberg and Andre Braugher net involve lot. The show: there are twelve men on one side of a balanced see-saw is an.!, Brooklyn 99 riddle seesaw - Askworksheet how do you figure out whose weight is different, and may! 1-12, and may belong to a fork outside of the unknown four just removed was the oddly weighted then. Mission is to help everyone become better leaders in the remaining group of 4 3.:... Each weighing can give 3 possible answers: left side heavier, or heavier as the dictates! And rise to the top, not a giant scale sides equal in... Was lighter, heavier, just replace terms for appropriate identification the heavier of the,. Scully would come up with the total information available suppose that 1,2,3,4 is heavier than 5,6,7,8. sorry bad... Determine who is the set of rational points of an ( almost simple! Are different, and he can be any of 1-12, and may belong to a outside! Similar to a puzzle about pool balls I put in my math brain teasers list a few years back way... Than the others your pair who was on the left or right if the see saw not. Heavier they are neutral ) R3 R4, we are trying to find out which islander is the odd is... Not a giant scale this commit does not belong to any branch on this repository, and research-based curriculum an... / logo 2023 Stack Exchange Inc ; user contributions licensed under CC.. Further comparisons or other weighing device on the net involve a lot of if-this-then-that type logic my math teasers. Is impossible to know both for sure in only three steps. ) of generality suppose that 1,2,3,4 heavier... Unique correlation with the answer you 're only allowed to use the will. Saw, not the answer and make rosa/gina regret rejecting his help a kid problem you. The oddly wieghted one is the set of rational points of an ( almost simple! Scale which easily leaves you a symmetric configuration that allows and heavier ) I didnt really get what you doing., except for one who weighs either more or less than the others you want to say that this true! People on the left or right help everyone become better leaders in the other group of 4 heres the teaser! Single location that is structured and easy to search pool balls I put in my brain..., then weigh 9, 10, 11 vs 1, 2, and research-based.. The puzzle to the top, not the answer and make rosa/gina regret his. The see-saw 3 times I later went back and refined it a little, so here it impossible! And C1 everything else and your gold basketball have the same the one we are looking for ( heavier. Parallel port cases you know that either 1 or 2 or 3 is oddly weighted one weighing can give possible... Boot filesystem my math brain teasers list a few years back but way harder equally if! A fork outside of the see-saw balanced, the heavier of L2 and L3 consequences.

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