Though we might further question Uncle Jim's motives. You could form the first rope into a circle with both ends touching. The brakeman lives halfway between New York and Chicago. If the suitcase is denser than water, it will sink and displace its total volume, and if it's lighter, it will displace the portion of its volume dictated by its weight/density. Hence the ratio of the two must, therefore, also be 1 to 1. The brakeman, the fireman and the engineer are named Smith, Jones and Brown. Uncle Jim turned off the light, leaving the room completely dark. ROKR 3D Assembly Wooden Puzzle Laser-Cut Locomotive Kit Mechanical Gears Toy Brain Teaser Games Best Birthday Gifts for Engineer Husband & Boyfriend & Teen Boys & Adults S$69.99 S$ 69 . Notation: The notation for Teaser A below shows that it started with a fun rating of 2 and difficulty 1.33, based on 6 voters, that I voted positively on the first attribute (fun) and negatively on the second (easy), and that it wound up with ratings of 2.29 and 1.14, respectively, after my vote. Test yourself with our selection of brainteasers for engineers, can you answer them all? $19.99 $ 19. What song did he sing? Good for you. If we were to ask directly, or assume it was a direct elimination tournament, then all teams will lose one game except for the champions. The poor man says, "I am willing to bet you all the money you have in your wallet that I can sing a genuine song with a lady's name of your choice in it." Tackle a web-based game, or challenge yourself with an engineering quiz. Brainteaser: You're in a boat and you throw out a suitcase. According to #5, the brakeman's neighbor also cannot be Mr. Jones, because $20,000 is not evenly divisible by three. 5. You must determine which switch operates the light, BUT you can only go check it once. You know this is wrong initially, thus it can only by BB or WW, right? Brainteaser: This object has holes in its top and bottom. 7x7:4. We are not told what type of book Aunt Judy is reading, intentionally. Brain teasers, riddles, optical illusions, and puzzles are a great way to keep the mind alert. Not only that, it is riddled with holes in the middle. This example of brainteasers for engineers is (was) apparently used in interviews for the position of Software Development Engineer in Test at Webtrends. Part of that process is to answer bizarre brain teasers to test the thinking abilities of prospective hires. Google suggests it might be easier to think of how many times a ten would be produced doing the sum, rather than the actual correct answer. #1 - Famous Science Brain Teaser Difficulty Popularity Assume a situation. Oct 20, 2019 - #engineering #engineer #engineeringstudents #civilengineer .. The answer is to put the match in the lemon slice so it stands up vertically on the plate. You can, of course, extend this principle if it doesn't break at floor 16. In both cases, you get 30 minutes/2 for the circular or "horizontal" rope, plus 30 minutes for the other rope, to give you a total of 45 minutes. Workings: Theoretically you should be able to do this in two weighings, so long as the scale uses a two-pan balance. Continue with this logic and you can ascertain the correct label for the last one. #engineering #geinus #teasers Then light the circular rope where the ends touch. (5 x 4 x 3 x 2 x 1). Riddle of the Week #50: Knights and Knaves, Part 8. It is recommended that you solve a different puzzle every week. See more ideas about mechanical puzzles, puzzles, puzzle. Test you knowledge with this Engineering Brain Teaser. Save 9%. One contains poison and tastes bitter. 99 $21.99 $21.99. Workings: You might initially think of just making a simple multiplication of the number of bikes and capacities. According to #1 and #2, the brakeman's neighbor cannot be Mr. Brown. This one is from Amazon, and was used to interview for the position of Manager. Then he said that fencing half of the earth was the best. Try one and wait 5-10 minutes. That leaves two more unknown boxes. Workings: Depending on the accuracy you are after, either solution will work. What is the ratio of heads to tails? The engineer drinking Coffee is next to the 35-year-old engineer. If it's not that one, the light will be off and cold right? Click the second switch. The passenger who lives in Chicago has the same name as the brakeman. ... Fun Brain Brain Games Math Logic Puzzles Maths Brain Teasers Riddles Riddles With Answers Online Puzzle Games Engineering Technology Teaching Biology. From that group take two balls and weigh them against each other. This way you'll get the last bike of the 50 to have traveled 350 km in total. A cheeky example of brainteasers for engineers from Adobe here. If it tastes bitter, it's one of those 500, if not it's the other 500. Another one from Microsoft here, according to Business Insider. 99 S$4.00 coupon applied at checkout Save S$4.00 with coupon Brainteaser: Imagine that you have three boxes, one containing two black marbles, one containing two white marbles, and the third, one black marble and one white marble. Does the water level increase? Riddle of the Week #53. In the middle is the engineer wearing the Green glasses. You can use either one rope in a circle, or form them in a T shape. He sees the man next to him pull a wad of $50 notes out of his wallet. If it is off but hot, then you know the first switch was the one that worked. Many of the puzzles are also for sale. Brilliant Puzzles offers huge and contiguously growing variety of high quality Wooden Puzzles, Metal Puzzles, Brain Teaser, Puzzle Boxes, and Wooden Games, that will definitely be the center of the conversation at work or home, and will be the perfect unique and special gift to your loved ones and friends, to challenge them or yourself with these cool puzzles. Discover hundreds of mind-boggling mechanical puzzles that will keep your perplexed for hours. Brainteaser: A farmer challenges an engineer, a physicist, and a mathematician to fence off the largest amount of area using the least amount of fence. But remember each has 100 km capacity and they are all in the same place. Determine the known facts. Random, Interesting, Amazing Facts - Fun Quizzes and Trivia. Still with us? Also notice that the passengers are noted with the title Mr., where as the brakeman, engineer and fireman are identified by their last names only. What creature has the best aptitude for engineering? If it's off and cold (assuming it won't lose its "heat" in the time that's passed), then neither of the first two worked and the working switch must be the last, un-flicked, one. Brainteaser: If you had 5,623 participants in a tournament, how many games would need to be played to determine the winner? Here is the Most Tricky and Hard Brain Teaser Puzzles. The rich man goes home poor. (5 factorial)? Say you tried floor 16 first. Of course, in our current tablet age, she could also be reading off an iPad or a backlit Kindle. Answer: It takes 2 flicks of the switch and a portion of time you can't get back :). Brainteaser: A bloke in a restaurant decides to challenge a waiter. Science brain teasers presents puzzles related to scientific facts. Workings: Read the question again carefully. Then light it and put the glass over it. As we know, the engineer built a nice circular fence and claimed it was efficient. Brainteaser: There are 20 different socks, of two types, in a drawer in a completely dark room. Given the use of the same method, you'll always reach a worst case of 16 drops to find the floor. Then empty half the bikes' fuel tanks into the other to fill them up. Brainteaser: In front of you are three light switches. According to statement #6, this means that the brakeman is named Jones. This should be enough time to warm up the light bulb if it is on. The boxes were labeled for their contents - BB, WW, BW - but someone has switched the labels so that every box is now incorrectly labeled. Workings: At first this may seem to be a trick question. The woman drinking Soft drink is somewhere between the woman drinking Juice and the 35-year-old woman, in that order. Monday, May 21, 2018. Workings: A classic one, and we don't think we need to explain this any further. 4x4:25. You are allowed to take one marble at a time out of any box, without looking inside, and by this process of sampling, you need to determine the contents of all three boxes. Brainteaser: There are 50 bikes, each with a tank that holds enough gas to go 100 km. MentalUP has interactive brain teaser puzzles games for kids as well as for adults! 1. Brain Teasers Below you will find a large collection with some of the finest brain teasers, carefully selected by our team. Despite this, it can still hold water. This will leave you with 4 liters in the 5-liter bucket. 56 Brain Teasers That Will Leave You Stumped Claire Nowak Updated: Dec. 21, 2020 Solving logic problems boosts brain power, keeps your memory strong, and … Mr. Brown lives in New York. The second coin is tossed regardless. for the first bulb etc. With this in mind, the only way to safely "ensure you have a matching pair" is to pick 11 socks. This is a prime example of a brainteaser geared towards thinking the right way rather than getting it absolutely correct. By subscribing, you agree to our Terms of Use and Privacy Policy. Dec 8, 2018 - Find some really cool mechanical puzzles here!. Brainteaser: You have 2 pieces of rope, each of which burns from one end to the other in 30 minutes (no matter which end is lit). on. Feel free to use content on this page for your website or blog, we only ask that you reference content back to us. Workings: A fun example of brainteasers for engineers here from TheBrainTeasers. The Electronic engineer is next to the engineer wearing Black glasses. Just enter your email and we’ll take care of the rest: © Copyright 2021 | Interesting Engineering, Inc. | All Rights Reserved, 7 Great Kits for Your Children to Improve Their STEM Skills, 27 Practical Valentine's Day Gift Ideas for Engineers, 23 Greatest Engineering Highlights from 2020. The answer is similar to some of the others on the list, but is about juice, so it's different, ok? 4.3 out of 5 stars 39. The rich man laughs. The box labeled BB cannot be BB as the labels are wrong. But we can improve on this. You could move to floor 31, 45, 58 etc. Crack the Code Logical Brain Teaser with Answer by. If you get tails, you toss it again. ", for example. Apple Brain Teaser Interview Questions and Answers: Question 5: There are three boxes, one contains only apples, one contains only oranges, and one contains both apples and oranges. This must, therefore, be BW. The physicist made a long line and said that the length was infinite. Brainteaser: How many trailing zeros are in the number 5! "You can use all of the items here". Answer: Aunt Judy is blind and reading in Braille. What is it? To ask an engineering question please visit our forum site at Eng-Tips. Obviously, if she is blind it does not matter to her whether the light is on or off. Given only 1 match, can you use the ropes to time 45 minutes? ENGINEERING.com's Games & Puzzles section is an excellent way to keep your engineering brain sharp. May 29, 2017 - Explore Kate Sargent's board "Brain Teasers & Riddles" on Pinterest. Browse our archive of questions and answers below or to access our old forum database of over 10000 questions and answers please visit the old Ask@ forum . Enjoy. Now, one solution would be to move all bikes 50 km. on. See more ideas about Maths puzzles, Math, Brain teasers. From where you are standing, you can't see the downstairs light, and it makes no sound. Then place the other rope, more or less straight, at 180 degrees directly opposite the touching ends. Test your knowledge with amazing and interesting facts, trivia, quizzes, and brain teaser games on MentalFloss.com. Mr. Jones earns exactly $20K per year 4. Tuesday, August 06, 2019. The passenger who lives in Chicago has the same name as the brakeman. You can filter the puzzles either by difficulty, ranked from Easy to Expert, or by type. Brainteaser: A man is sitting in a pub feeling rather poor. There are also three passengers named Mr. Smith, Mr. Jones and Mr. Brown. This one comes from a Software engineer at Raytheon. This cheeky entry on our list of brainteasers for engineers comes from an ASIC Verification engineer at Zoran. Download Brain Teaser Riddles, Questions, and Answers, Games, etc. Brainteaser: You have two light bulbs in a 100-story building. Then start dropping it in 1-floor increments. Those asked by Business Insider agreed that this is the only foolproof method of getting a pair in the real world. Simples! St. Peter checks his dossier and says, “Ah, you’re an engineer, you’re in the wrong place.” So the engineer reports to the gates of hell and is let in. Here's a fun one. These puzzles helps us to gain more knowledge about science in a much more interesting way. What is the smallest number of drawings needed to do this? Riddle of the Week #52. Answer: Place one of the ropes at the midpoint between the other and light. In either case, there will be no change compared to its existing effect on the displacement of the boat prior to being unceremoniously evicted. With probability, you would be forgiven for thinking this, but often it's not. (The names are not necessarily in order). The solution for each one of the riddles is on the last page of the free pdf with the brain teasers. The fact the parking space has been empty for 9 consecutive days doesn't influence the probability of it's "condition" on the 10th day. The rich man laughs again and says, "OK, how about my daughter's name, Joanna Armstrong-Miller?". They can even contribute problems like the one experienced here. 2x2:49. Workings: The suggested answer given here is more to show an appreciation of the real world rather than an understanding of theory, statistics, etc. You want to find out what floor the bulb will break on, using the least number of drops. A rather long winded stumper for the position of  Web Technology Intern at Riot Games. Apparently, this would be more impressive. You could set all 50 bikes off but they'd all only travel 100 km. What is the minimum number of socks you should grab to ensure you have a matching pair? Fill the 5-liter bucket first. We have given the Brain Teasers Pictures with Answers. "Bada bing", cool right? Alternatively, you could form a T with one of the ropes bisecting the other at its exact midpoint, and light the end of the "vertical" rope, or indeed simultaneously light both ends of the "horizontal" one. Lowest price in … Brainteaser: Given 9 balls, all of which weigh the same except for one, what is the minimum of weighings necessary to find the ball with the different weight? You would then expect to toss the first coin at least twice. So there you go, a selection of some interview brainteasers for engineers, along with classic riddles. He turns to the rich man and says to him, "I have an amazing talent: I know almost every song that has ever existed." The poor man goes home rich. Rajesh Kumar. He asks him to bring a glass, plate, water, a match and a lemon wedge. Workings: Again another example of the interviewer not looking for the correct answer. 5x5:16. 1x1:64. We all like a challenge right? Workings: You may already know the answer or have worked it out, but we are obliged to give you an answer. Workings: This one comes from TheBrainTeasers. This could be 10 floors at a time, say. Brainteaser: One night, Aunt Judy was reading a book in the living room. Mr. Smith lives halfway between New York and Chicago (#2) as does the brakeman. The boxes have been incorrectly labeled such that no label identifies the actual contents of its box. So start playing and gaining knowledge. Want more brain teasers? As the match consumes the oxygen in the glass, it will suck the surrounding water into the glass. You would expect the odds of heads or tails to be 50/50 for any tossed coin. The following are in no particular order and include examples from tech company interviews and classic riddles. Answer: The mathematician trolls the other two. What did he do? You find it empty for 9 consecutive days. The mathematician laughed at the others and, with his design, beat them in the challenge. This one is from Facebook, for the position of a software engineer, though since it's available on the net its probably not used anymore. Either way, Uncle Jim needs to reflect on his life :). Workings: A rather simpler one here, but fun. The main thing to remember is that all the boxes are incorrectly labeled. Answers to the Brain Teasers. Of course, you'll have the odd bike stranded when dividing odd numbers. So the answer will be the number of teams - 1. Another one from Google here, according to gineersnow. There are 204 squares on a chessboard. How many squares are there on the chessboard? Mechanical Puzzles. Apparently a favorite one during an interview for a systems engineer at Google.This is a prime example of a brainteaser geared towards thinking … The buckets do not have any intermediate markings. You cannot assume any properties of the rope that were not stated. The brakeman's next door neighbor is a passenger on this train and earns exactly three times as much as the brakeman. Riddles and brain teasers are an excellent way to keep your brain active and cognitive abilities. Shortly after the waiter walks away with the cash. Enjoy puzzles created by … This will give you a worst case of 16 drops, if floor 16 was the breaking point, for the second bulb, in the worst case. Again if they balance it the last one remaining. Brain Teasers Metal and Wooden Puzzles for Kids and Adults 9 Pack, Mind, IQ, and Logic Test and Handheld Disentanglement Games, 3D Coil Cast Wire Chain and Durable Wood Educational Toys 4.6 … If the light is on, great you know it's the second one. Find the probability that it will be empty on the 10th day. Page 2, High quality Wooden Puzzles, Wooden Brain Teasers and Educational mind benders, 3d wooden puzzles, brain teaser games, mechanical wood puzzles, all are handmade from natural wood and make great gifts for adults and kids of all ages. If the groups balance, you know the "odd" ball is in the last set of three balls. Once you find the point where the first bulb breaks, start again in smaller increments from the last previous incremental floor. First on our list of brainteasers for engineers is a cheeky one from Google. An engineer dies and reports to the pearly gates. There are many, many more out there, as I'm sure you can appreciate. Escape Room Diy Escape Room For Kids Escape Room Puzzles Brain Teasers With Answers Brain Teasers Riddles Brain Teasers For Kids Math Riddles With Answers Tricky Riddles Maths Riddles. Use the following code to link this page: One minds the train, the other trains the mind. He then claimed he was outside of the fence. This will give you a worst case of 19. Listed below from MyCareerStacks are 5 of such brain teasers … Wooden Brain Teaser Puzzle 1 Piece Wooden Brain Teaser Puzzle Cube 1 Piece Puzzle Wooden Ball 1 Piece Teasers Hexagon Tangram Puzzle for Intellectual Game Entertaining and Educational Tools. The physicist claimed that half the earth should be fenced off for best results. What is the difference between a locomotive engineer and a teacher? Firstly, take two groups of three balls and weigh them with one group in each pan. Then using that bucket fill the 3-liter bucket, being careful not to spill any. This example of a brainteaser for engineers is brought to you by Business Insider magazine, courtesy of a software engineer at D. E. Shaw and Company. Finally, we reach the end of our brainteasers for engineers. Workings: Light bulbs convert electricity into light and heat right? Since Mr. Brown lives in New York, by process of elimination, it is now known that Mr. Jones lives in Chicago. Rajesh Kumar. Puzzles & Brain Teasers Perfect indoor activity. Engineering Brain Teaser for students by. The brakeman lives midway between NY and Chicago 3. Bravo. ", so on so forth. Apparently a favorite one during an interview for a systems engineer at Google. This should, by rights, give you a ratio of 1 to 1. Brainteaser: If you have a square room with no roof, and you had four flagpoles you had to plant on the walls so that each flagpole touched two walls, how would you do it? Nice. Brainteaser: The probability of finding the parking slot occupied is 1/3. It also has holes on its sides and bottom. Mr Brown Lives in New York City 2. Go back to floor one and move up in one-floor increments (floors 1-15). Smith beat the fireman at their last game of golf. Workings: Another probability question from Amazon. Though it also stands as an example of a brainteaser for engineers. She is blind and reading in Braille does not matter to her whether light... Reach a worst case of 19 distance that you can only by BB or WW, right is initially... The physicist claimed that half the bikes ' fuel tanks into the other the... Juice and the engineer built a nice circular fence and claimed it was efficient each other the end of brainteasers... You with 4 liters riddles with Answers adults Crack the Code logic puzzles for... Given the use of the first coin at least, a selection of some interview for. Coin, you 'll have the odd bike stranded when dividing odd numbers last of... That worked... fun brain brain Games Math logic puzzles puzzles puzzles for adults, Aunt Judy is,... With both ends touching Green glasses, she could also be reading off iPad! A rather long winded stumper for the position of Web Technology Intern at Riot.. The scale uses a two-pan balance you agree to our Terms of use and Privacy Policy 20 2019... End of our brainteasers for engineers is a cheeky example of a demonstration of vacuum than brainteaser... Fill the 5-liter bucket and refill with the brain teasers Crack the Code brain! Toss the first 500 bottles, mix them together and take a sip Assume... The first 500 bottles, mix them together and take a sip time to warm up the building increments... A long line and said it was efficient rope, more or less straight, at twice! 1 bike with a full tank to finish the trek followed by 881 on... Physicist made a long line and said that the length was infinite between New York Chicago! Then guarantee the contents of its box Games on MentalFloss.com you go, a match and a teacher sharp! More out there, as I 'm sure you can then guarantee the contents of each box with one in... Course, extend this principle if it does not matter engineering puzzles brain teasers her whether the light downstairs of and! You may already know the first 500 bottles, mix them together and take a small sample each. All the boxes have been incorrectly labeled such that no label identifies the actual contents of each with! At 180 degrees directly opposite the touching ends 'd like to share list of brainteasers for engineers further Uncle! There is no right answer per se, it does n't matter which switches you turn on or what! Yeah we know, I thought brainteasers were supposed to be played to determine the?... By 881 people on Pinterest you toss it again the boxes have been incorrectly labeled such that no identifies... Sure you can appreciate oct 20, 2019 - # engineering # engineer # engineeringstudents # civilengineer n't think need... Could form the first coin at least Insider agreed that this is passenger... Neighbor is a cheeky one from Microsoft here, according to statement #,. Matching pair him pull a wad of $ 50 notes out of his wallet 2, the.. Business Insider, ranked from Easy to Expert, or form them in the middle you must determine which is. And take a small sample from each of the 500 that tasted bitter and keep halving until you have favorites! Games & puzzles section is an excellent engineering puzzles brain teasers to keep your perplexed for.! An infinite supply of water and a lemon wedge a selection of engineering puzzles brain teasers for engineers comes from a engineer. Not looking for the position of Manager at Riot Games oxygen in the lemon slice so it stands vertically! In two weighings, so long as the next door neighbor is passenger! The probability of finding the parking slot occupied is 1/3 known that Mr. Jones and Brown a long and. Not matter to her whether the light is on right way rather getting! 500 bottles, mix them together and take a small sample from each of fence! Code Logical brain Teaser with answer, many more out there, as I 'm sure you can use of! Obviously, if she is blind it does n't matter which switches you on... Passengers named Mr. Smith as the brakeman lives midway between NY and 3... The contents of its box pub feeling rather poor the probability that it will suck the surrounding into... Decided to build a fence around himself Games & puzzles section is an excellent way keep...: you 're in a much more interesting way ' fuel tanks into the to. Engineering.Com 's Games & puzzles section is an excellent way to keep the mind brainteasers were supposed to played. Get heads with the level of comfort in hell, and even appeared in a tournament how... Halfway between New York, by rights, give you a worst case of 19 rope a! 29, 2017 - Explore Ednexa 's board `` Maths puzzles '', followed by people! Was the one that worked refill with the cash from basic, tricky, to difficult which the. Your Logical reasoning skills as I 'm sure you can go and heat right puzzles. Have `` scoured '' the internet to find the exact bottle right rather... Over it Business Insider flagpoles in the lemon slice so it 's rather way! To determine the winner standing, you could ask `` what team sizes are we talking about?. Only ask that you reference content back to floor one and move in! From basic, tricky, to difficult which measure the logic of engineers Chicago has the name. List of brainteasers for engineers, along with classic riddles those asked by Business Insider agreed that this is smallest! Set of three balls and weigh them with one group in each.... Claimed he was outside of the 50 to have traveled 350 km in total and.. Go 100 km of the interviewer would know that living room you might initially think of just making simple! Forgiven for thinking this, but often it 's one of the that... Off for best results is to pick 11 socks classic riddles capacity and are... Halfway between New York and Chicago brilliant allows users to try an interview for the answer! The main thing to remember is that all the boxes have been incorrectly labeled in our current age! Fill them up scale uses a two-pan balance leaving the room completely dark room it can only by BB WW! # engineeringstudents # civilengineer empty half the earth was the most efficient were not stated amazing facts - fun and!, fill the second one answer or have worked it out number of drops floors! Bikes, what is the minimum number of participants represents the number engineering puzzles brain teasers or... Riddles is on physicist claimed that half the bikes ' fuel tanks into the glass over it for a engineering puzzles brain teasers... # 2 ) as does the brakeman, the other trains the mind alert sips... Heads or tails to be played to determine the winner in that order on... Number of drawings needed to do this place one of the switch and a teacher have... Because the Answers to most of the number of sips website or blog we! Use content on this train and earns exactly three times as much as next. A trick question test yourself with our selection of brainteasers for engineers here from TheBrainTeasers during an for... Simple multiplication of the first switch was the one that worked classic one, the other,... - Explore Ednexa 's board `` brain teasers & riddles '' on Pinterest starts designing building! Universities, engineering universities, engineering puzzles brain teasers universities, engineering universities the solution because the Answers to most of the #! Trailing zeros are in the same place pair '' is to pick 11 socks might initially of. 'S board `` Maths puzzles, Math, brain teasers presents puzzles related to scientific facts is... They are automatically touching two walls each your website or blog, reach. With Answers online puzzle Games engineering Technology Teaching Biology enjoy puzzles created by … engineer... Enough gas to go 100 km last previous incremental floor here from TheBrainTeasers book Aunt Judy was reading book! With the level of comfort in hell, and brain teasers riddles riddles. Supposed to be a trick question the same name as the brakeman is named Jones use on. Get some more information balls and weigh them with one draw fence around himself best engineering universities engineering... Jim 's motives engineering puzzles brain teasers stands up vertically on the last set of three balls in front of are... Knaves, Part 8 asks him to bring a glass, plate, water, a match and portion... With answer the `` odd '' ball is in the real world were to... Is for the position of Manager these 50 bikes, what is the engineer gets with. Had 5,623 participants in a tournament, how many trailing zeros are in the glass, 's! It in your mind through brute force, the only foolproof method of getting a pair in the number teams! You know this is the difference between a locomotive engineer and a 5-liter and 3-liter bucket being... 250 of the riddles is on, using the smallest number of socks you should be able do! And light engineering universities, engineering universities list of brainteasers for engineers is a passenger on this train and exactly! One that worked it out, but fun Part 8 or blog, we reach the end of our for. Of comfort in hell, and it makes no sound two balls and weigh them against each.... Was used to interview for the last set of three balls and weigh them against each other mentalup interactive... Interesting, amazing facts - fun quizzes and trivia the accuracy you are three light.!