Jump to content
BrainDen.com - Brain Teasers

Leaderboard


Popular Content

Showing content with the highest reputation since 09/27/12 in all areas

  1. 2 points
    In our circles you may find A laugh, a wink, a grin But pressure us we'll likely snap And send away our kin. We don't do much, we go to pot Such simple ones are we But with your hand we take command Or from you we will flee.
  2. 2 points
    Agree. When I hit the send button, I realized my thinking was too simple. But instead of deleting my post (moderator privilege) I left it to take its licks.
  3. 1 point
    Well THAT fell fast!
  4. 1 point
  5. 1 point
  6. 1 point
    Though seldom seen, I'm world renowned Ever in flight above the ground. Teeth chewing, gnashing in time gnawing on knots, shunning the find. My hands at the ready, arms at the stay Heart like the sun, burning away. Ears like a rabbit's, pinned to the side-- Listening close, far and wide.
  7. 1 point
  8. 1 point
    The answer should be 25. My "proof" is a brute force programming solution. I have a psuedocode c++ bruteforce solution. I can give the full version if requested. It takes a few seconds to brute force all possible paths. This might count as a proof, depending on if you trust the computer to be reliable. Basically what it does is it generates all possible paths, and then prunes as it goes along so the program dosen't take basically forever, or 6^27 moves. Now a proof will involve some theorems in graph theory, which I don't yet know all that well. Assume the XYZ plane void recursive_dumb_solution( A 3D cube,Position of X, Y, and Z of current spot,direction it went twice ago, direction it went to get here){ if traveled along a direction twice in a row, return to the above function. else if( x<0 || x > 2 || y < 0 || y > 2 || z < 0 || z > 2) AKA if it exited the cube, return. else if(cube[x][y][z] == 1) AKA if visited spot already visited, then return. else{ //mark the current position of the cube as visited. cube[x][y][z] = 1; /////Moves in every direction possible. recursive_dumb_solution(cube, x+1, y, z, length+1,'x',prev_dir); recursive_dumb_solution(cube, x-1, y, z, length+1,'x',prev_dir); recursive_dumb_solution(cube, x, y+1, z, length+1,'y',prev_dir); recursive_dumb_solution(cube, x, y-1, z, length+1,'y',prev_dir); recursive_dumb_solution(cube, x, y, z+1, length+1,'z',prev_dir); recursive_dumb_solution(cube, x, y, z-1, length+1,'z',prev_dir); cube[x][y][z] = 0; return; } }
  9. 1 point
  10. 1 point
    Greetings, my name is Cody and I am new here in this forum. Nice meeting you all. Although I have never heard of it, I am actually quite curious about what it is!
  11. 1 point
    . What is the value of x If 1/2, 2/3, 3/4, 4/5, 5/6, 6/7, 7/8, 8/9, 9/10 then x/1000? x = 500,000 2. If 4 and 2= 26, 8 and 1 = 79 and 6 and 5 = 111. Then, what is 7and3?...410 3. What 3 positive numbers give the same result when multiplied and added together? 2 4. What number do you get when you multiply all of the numbers on a telephone's number pad? zero 5. Here is a light switch. Note the order of the positions. If the light is now at medium and it is switched 3922 times what will be the position of the switch? medium 6. Can you arrange four nines to make it equal to 100. 99 9/9 8. If 1/2 of 5 is 3, then what is 1/3 of 10? 3.67 9. 100 students entered college. 55 of them chose music. 44 of them chose sports. 20 of them chose both. How many of them chose neither music nor sports? 21 10. Four friends are going to a concert. When they arrive, there are only five seats together left in the theater. The manager will let all four friends in for free if one of them can tell her how many different seating arrangements are possible for four people with five empty seats. 240 All four are let in free. Could you have given the correct answer? 240 12. At six o’clock the wall clock struck 6 times. Checking with my watch, I noticed that the time between the first and last strokes was 30 seconds. How long will the clock take to strike 12 at midnight? 5 hrs 59 1/2 minutes 13. There are several books on a bookshelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf? 9 14. John has been hired to paint the numbers 1 through 100 on 100 apartments. 11 How many times he has to paint 8? 11 15. You have two books. One of them is upside-down and the other is rotated so the top of the book is facing you. What is the sum of the first page in each book? 1 +1 16. There is a certain club which is for men only. There are 600 men who belong to this club and 5% of these men wear one earring. Of the other 95% membership, half wear two earrings and the other half wear none. How many earrings are being worn in this club? 600 17. Does a pound of gold or a pound of feathers weight more? feathers 18. There is a chain nailed to the wall. The chain is 10 feet long and the center of the chain dips down 5 feet from where each side of the chain is nailed to the wall. How far are the 2 ends of chain from each other? on the same nail 19.Little Johnny is walking home. He has $300 he has to bring home to his mom. While he is walking a man stops him and gives him a chance to double his money. The man says "I'll give you $600 if you can roll 1 die and get a 4 or above, you can roll 2 dice and get a 5 or 6 on at least one of them, or you can roll 3 dice and get a 6 on at least on die. If you don't I get your $300." What does Johnny do to have the best chance of getting home with the money? keep on walking 20. If you have 6 women and 2 friends, how many women do each of your friends get if the friends are two of the 6 women;i.e. women themselves , then each is entitled to herself, or one each/ If the two friends are male then no women.
  12. 1 point
    Didn't watch the video - Will take too much data (for me)! Please show us the answers after everyone has had a go at them!
  13. 1 point
    I watched the video, and overall liked it. Since you asked for feedback: with the video format, I think I would prefer to see the question and be told to pause to have time to think of the answer before it appears instead of having a set amount of time for each question, since with at least some of them you either know it or you don't right off the bat. As it is, I got a little annoyed waiting a minute for the answer if I already knew it. The other main comment is something DejMar sort of alluded to, that there are potentially multiple answers that would make sense for some of the riddles. In particular the second one, I also interpreted it as most likely being a gotcha where each number in the sequence is (n)/(n+1), so the final term x/1000 comes after 9/10 and should equal 10/11, meaning x = 10 x 1000 / 11. Only after realizing that it wouldn't be an integer did I decide that it probably wasn't what you intended to ask, so the answer should be the other thing I had in mind and be x = 999. With the light switch, when I saw it here I thought there must be three positions with something like "off" going to "medium", "medium" going either to "off" or to "high", and "high" going only to "medium" so there would be a unique answer -- after any even number of flips the switch must be back at "medium" -- whereas with the youtube version if you change directions during flipping you could either end up at the original position or 180 degrees away. For the question of painting 8s, I could have interpreted a couple of ways: you could argue that he would only paint 8 once (if it's referring to house number 8, or just the number 8 and not other numbers that happen to have 8 as a digit), that he would paint it 20 times (if you mean the total number of digits that are 8), or maybe even 19 times (if you mean the total number of houses with any 8 on them, although that's a less likely interpretation). DejMar commented on the ambiguity of whether the question with Little Johnny is talking about making it home with the original $300 dollars or the money that the man is offering, but I suppose that ambiguity needs to be present or else it wouldn't be much of a riddle. And the last question seems like it might be a bit offensive if asked to a woman. It might not be possible to make the questions entirely unambiguous, especially the question about Little Johnny since the ambiguity is what makes it a riddle in the first place, but sometimes simple things like saying "how many times does he have to paint the digit 8" can help make it unambiguous. In general, I would say to check for (and ask other people to check for) unintended ways that the questions might be interpreted.
  14. 1 point
  15. 1 point
    It certainly should. It clearly fails a units check. Good catch.
  16. 1 point
  17. 1 point
    Use the twelve pieces on the left to create a chess board, The pieces may be flipped!
  18. 1 point
    Perhaps your question may hinge on the source of variability. Pistol has 5-7. In any skirmish, is the choice between 5, 6, 7 made by the program randomly? Or does it depend upon distance to target? Or visibility ( like heavy, light or no fog)? And, as Pickett points out, damage radius is a key parameter of the Dupuy lethality index.
  19. 1 point
    Another factor to possibly consider...
  20. 1 point
  21. 1 point
    Does the Indy trap appear even if it doesn't save anyone from actual death? Can they act on themselves? Do the goodie save and the Indy trap appear identically in the night post?
  22. 1 point
    If a box contains twenty-one coloured discs, composed of fifteen blue discs and six red discs, and two discs were taken at random, it can be seen that the probability of taking two blue discs, P(BB) = (15/21)×(14/20) = 1/2. The next such arrangement, for which there is exactly 50% chance of taking two blue discs at random, is a box containing eighty-five blue discs and thirty-five red discs. By finding the first arrangement to contain over 1012 = 1,000,000,000,000 discs in total, determine the number of blue discs that the box would contain.
  23. 1 point
  24. 1 point
    We're being intruded by migrants secluded Who stowaway past our frontier They're costing us green and will linger unseen Unless I should get into gear Their nature I'll dredge as I perch on a ledge And twisting the truth's my endeavor Exposed to the nation, and next: deportation They thought they'd endure thus forever? I promise the answer has nothing to do with politics
  25. 1 point
    Can I be the one to own you Molly? Or be owned by you? Please
  26. 1 point
    Player A has one more coin than player B. Both players throw all of their coins simultaneously and observe the number that come up heads. Assuming all the coins are fair, what is the probability that A obtains more heads than B?
  27. 1 point
    On my phone, I see a link on each post that says "quote". I can sort of copy and paste the roster on phone but as I found out last game, the cursor had an unfortunate habit of moving... Spoilers and colors on phone have to be done with the [ ] codes. Spoiler: {spoiler}your text here{/spoiler} with [ ] instead of { }. No spoiler titles. Colors: {color=red/orange/whatever}text here{/color} also with [ ] instead of { }.
  28. 1 point
    @MissKitten Tagging does not work on mobile and quoting is hard on mobile as well. But other than that, on a PC, one can copy-paste colors and not bother with quoting the roster altogether. Which is cool. At least from a host's PoV.
  29. 1 point
  30. 1 point
    Roster: 1. maurice 2. Flamebirde 3. Molly Mae 4. 5. 6. Hirkala 7. bonanova 8. 9. 10. Roster: 1. maurice 2. Flamebirde 3. Molly Mae 4. 5. 6. Hirkala 7. bonanova 8. 9. 10. Mafia!!! Been too long! I don't know if I was supposed to leave it doubled, but I did. Hi, everyone!
  31. 1 point
    UN Mafia III Secret Alliance: Wincon - Last standing China -- The size of the country allowed it to send a replacement for the representative lost in the previous game. Each night chooses a player to target and remove from the game. Action is unstoppable except via save. Will use its electronic interception technologies to find out the identity of the target if target is saved. Once during the game (ODTG) can remove a vote. UN Alliance: Wincon - Last standing. USA -- The size of the nation and its offensive capabilities, demand it acts but not two nights in a row. Chooses to invade (kill) on even or odd nights at the beginning of the game. Must invade on said night, if no target is drawn it is randomly selected (cannot invade self). Germany -- Its economic influence grows steadily which leads to an increase in political influence. Sometimes is forced to save nations in dire need, but would prefer preventing actions. Each night can save a player but there's a 50% chance that this backfires in which case Germany loses its vote the next day. Russia -- Has hundreds of satellites floating in space. Can use one per night to spy an alive nation either to see who targeted it or to see who that nation acted upon. Once during the game (ODTG) Russia can instead get lucky and find out a player's true role. United Kingdom -- Has worldwide influence among its former colonies. Once per night it can blockade a country, but not the same country twice in a row. Blockading stops any day or night action except for ODTG actions and the Secret Alliance's night invasion. Australia -- Has an interesting choice of possibilities due to its cultural diversity. Has 4 agents at its disposal, each can be used once: 1. Add 1 extra secret vote, 2. Remove a vote, 3. Protect (save but cannot be cast on self), 4. Break quarantine (used during the day can make the player quarantined by Sweden able to vote and be voted for). Indy Sweden -- A nation with nothing to contribute to war and naturally inclined to peace. From time to time, may choose to temporarily side with a Faction or the other, in order to protect its own interests. Each night can quarantine a country but not the same twice in a row. Quarantine acts like a trap - saves from kills / invasions and renders the target neutral - unable to vote the next day or be voted for (but can speak). Once during the game (ODTG) can veto out a country (RID Kill) at any point during the day or the night, but will forfeit acting the next night if that happens. Sweden cannot die N1 (NK attempt won't appear in the NP). Wincon: Outlive two secret countries and the Secret Alliance. Stops game if successful. Must be alive at the beginning of the next phase in order for "outlive" to be counted. Secret targets are drawn at the beginning of the game and are known only to Indy. Rules * NP shows invasions (kill), protections (saves) and quarantines (trap). * DP shows lynched players (no hint if the vote was manipped. * Tie: D1 no lynch, D2+ all players in tie are lynched. * OOA: Night invasion (kill) >> Blockade (block) > Quarantine (trap) > Protect (save) > Regular invasion > Spy * Blockade / Quarantine will be told to the players regardless if they had an action that was blocked or not * Regular invasion can be blocked, the SA night invasion cannot be blocked, only saved from * Sweden's ODTG RID veto cannot be blocked or saved from as it happens instantly Players: 1. Thalia 2. bonanova 3. Molly Mae 4. Flamebirde 5. maurice 6. MikeD 7. plasmid Backups: 8. 9. Roles are out, Night 1 ends Monday Feb 20th at 9 PM UTC (About UTC). That means 4 PM EST and 11 PM for me.
  32. 1 point
    Hey guys, sorry I'm here. Didn't realize I could talk when I was trapped and then I'm having issues accessing the site on my phone. I'm on through Firefox now and it works better than Chrome I guess. I will catch up at lunch and see what I can contribute, hopefully before the night ends in case I was mercy/mod killed.
  33. 1 point
    @Thalia, good points. I've played only a few Mafia games. I wish I had accepted Unreality's invite to play, back in the day, and learned it better. Coupled with a hope for a few more games to follow this one. My comfort zone is math and logic, where all the needed info is provided, just needing insight and clear thought. This is more fun, actually, and with experience I might get better. Or, I'm a very slippery guy and everything I just said is garbage. . When does the night end?
  34. 1 point
    Taps watch. Oops. RIP MikeD. Would love to hear from maurice.
  35. 1 point
    Night 1: Once more unto the breach. Once more? ~~~~~ Seven people awoke at the same time to find themselves in a dimly lit room. A round doughnut table with chairs was in the center of the room. Most of them were dressed informally and as they surveyed their surroundings some tried to remember where there were the previous day. Yeah, everybody pretty much wanted an explanation for their presence there. Some had heard rumors of experiments in previous years and some had witnessed them but memories were fickle at best. And most had refused to believe something like this could happen to them (again). As rumors were passed in whispers from one another the chatter increased across the room. A flash and a hooded figure appeared in a mist in the center of the round table, surrounded by a cone of light. "If you can have a seat, I'm sure we can find a way to answer your questions as quick as possible. Some of you might already know where I'm going with this ... but I'm afraid that lessons were not learned, so he we are again.", they heard from the figure. One by one they moved towards the table, eyes cast on the figure. "Sometime ago, after being fed up with your reckless messing with forces beyond your control, I've attempted to ... mend the ends so to speak. While it worked for a little while, the situation has taken a turn for the worse recently and I find myself again unable to stand idly and watch. So hear me out!". "You are playing for your lives and your nations interests as well. Out of this room, you'll find color coded rooms. Don't mind the empty rooms. Inside your room you will each find a safe that only opens with your fingerprints and iris scans. Inside the safe an envelope with instructions. Study them wisely and remember time is scarce. Also, nothing exists outside of these rooms unless I tell you. We’ll adjourn in the morning!" The Hooded Figure disappeared without a sound and the doors squeaked open by themselves. One by one, they retreated to find their quarters. ~~~~~ The Secret Alliance member was watching his target from across the bar. As he watched his target order another round of drinks he sighed. "Yet another Bond". He left the bar twenty seconds after his target and walked towards faking a dizzy step along the way. As Plasmid stopped at his door and glanced over the shoulder, all he saw was someone trying to find balance. Key in door, he heard the blip from the door opening followed by the crush of a body against the floor. "Are you OK buddy?" he asked turning around slowly ... but as his eyes began to take in the sight he felt a tingling in his neck. As his hand tried to reach up towards the place his brain wanted investigated, his own brain played a trick on him. It surely wasn't that big of a ... he fought to finish that thread of thought as he collapsed to the floor, caught by hands that muffled the sound. His body was not to be found till morning. ~~~~~ The Swede had studied all the things the Hooded Figure had provided him with and pondered his odds. He had to be subtle about it, cause no one actually wants peace with both arms open. He went off the corridors and to the fifth room on the corridor. Cautiously he sprayed the content of one of the vials in his toolkit to the doorknobs and heard a small puff as the metal liquified. Maurice won't be joining tomorrow's talks. Except via Skype but that wasn't counting as present nowadays. ~~~~~ Tl;dr version: ~~~~~ Players: 1. Thalia 2. bonanova 3. Molly Mae 4. Flamebirde 5. maurice - quarantined by Sweden 6. MikeD 7. plasmid - Invaded N1 by China Day 1 ends Wednesday Feb 22nd at 9 PM UTC (About UTC). That means 4 PM EST and 11 PM for me.
  36. 1 point
    Assuming N people, the last standing (S) is given by: S=2*(N-2^m)+1, where m=floor[ln(N)].
  37. 1 point
    Real life: I bought (very cheep) a 256MB extension card for a 80286. There were 8 dip switches and no manual. I do not know how many times each switch can be flipped, in any case, it is better to minimize the manipulation. Look https://en.wikipedia.org/wiki/Gray_code
  38. 1 point
    I think phaze is right about the most practical answer. If that fails, I tend to agree with bonanova.
  39. 1 point
    You enter a room with two chests. You know that one chest has a lot of money (but you are unsure as to which). You know the other chest has half as much. Being the greedy person you are you want the most money but the chest are indistinguishable from each other outside of opening and counting the contents. You picked the first chest. Just before you open it, the owner of the chests offers you an opportunity to switch. Should you?
  40. 1 point
    Anyone here ever play the board game Balderdash? I was thinking this would make for a fun forum game and there are some similarities to Mafia, methinks. For those who have not played the gist is this. Player A selects a card. That card has an obscure word and the definition. Player A reads aloud the word and then proceeds to write down the definition while all other players write down their own definition. Usually they do not know the definition. This is fine as that is not the goal. Player A shuffles all of the definitions and reads them aloud. Points are scored for guessing the correct definition, other players guessing your definition, actually writing the correct definition, and Player A scores if nobody guesses correctly. The version I have also has Names, Dates, Acronyms and Movie Titles. The subject is chosen by the roll of a die. So here's my thought. We get 6-10 players to sign up, I will serve as a perpetual "Player A" I will roll a die and select a card. Then I will post the "word" and subject matter. Players have 24 hours to pm me their "definitions". After those 24 hours, I will post the "definitions" and players vote on them roster style a la Mafia. You do not score points for voting for your own "definition". Chatter is encouraged. After 24 hours I will announce the correct "definition" and post scores. This will go on until somebody scores 20 points, I'm thinking 2-3 weeks. Scoring is as follows: - Players submitting the correct definition are immediately awarded 3 points - Players are awarded 2 points if they guess the correct definition. - Players are awarded 1 point for each other player who incorrectly chooses the fake definition they submitted. - The Host is awarded three points if no one guesses the correct definition. If there is interest, I would like to start Sunday. I'm thinking I may try to create a game board, but don't hold me to that. I would like players to select a color, however. If you'd like to play place your name next to a color. The rules we will play by are in the spoiler below. Isolating to make signups easier Host - maurice Red - Blue - Green - Purple - Orange - LimeGreen - Turqoise - Brown - HotPink - Gray -
  41. 1 point
  42. 1 point
  43. 1 point
  44. 1 point
    @marksmanjay you're missing GOTHS - 1 and a duplicate MATES - 2 - your points, not mine P.S. Cool "@" works /me slaps mo around with a large trout P.P.S IRC does not work
  45. 1 point
    I think a word a little less thick with correct letters could score you more points.
  46. 1 point
    SHRUG - It's under your name and in your signature.
  47. 1 point
    MAFIA Cuz, yeah
  48. 1 point
    Ooh. It's been a while. ROLLO - Logic: At this point, I don't need logic.
  49. 1 point
    There are multiple solutions:
  50. 1 point
×
×
  • Create New...