Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie

I bet you didnt know that

Options
1184185187189190334

Comments

  • Closed Accounts Posts: 20,633 ✭✭✭✭Buford T. Justice XIX


    There's a term for that: Redundant Acronym Syndrome. Or RAS Syndrome for short.

    I learned this while studying at UCD Dublin.

    My mother used freak out a friend of mine who studied in UCC by calling it UCD Cork :pac:


  • Closed Accounts Posts: 5,995 ✭✭✭Ipso


    Fourier wrote: »
    The Mexica (founders of the empire) and the related tribes, collectively the Aztecs, had arrived in Central Mexico from the north, so they had no idea about the original population centers in the region like Teotihuacan, thinking they were built by gods or giants.

    Did they have The History Channel back then, too?


  • Moderators, Science, Health & Environment Moderators, Society & Culture Moderators Posts: 6,307 Mod ✭✭✭✭mzungu


    The tin can was patented by Peter Durand in 1810 but the tin can opener was not patented until 1858 (by Ezra Warner). In the time between, people used chisels and hammers to open their cans.


  • Moderators, Arts Moderators, Recreation & Hobbies Moderators, Social & Fun Moderators Posts: 76,777 Mod ✭✭✭✭New Home


    Ipso wrote: »
    Did they have The History Channel back then, too?

    Yes, but it was called "Breaking news". :D


  • Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 91,353 Mod ✭✭✭✭Capt'n Midnight


    New Guinea warriors harvested thigh bones from their dead fathers to fashion into ornamental but deadly daggers used to kill and maim enemies, sometimes to eat them.

    Read more at: https://phys.org/news/2018-04-guinea-human-thigh-bone-daggers.html#jCp


  • Advertisement
  • Moderators, Motoring & Transport Moderators, Music Moderators Posts: 12,778 Mod ✭✭✭✭Zascar


    If you shuffle a deck of cards, more than likely the order it is in, is the first time a deck of cards has ever been in that order.


  • Registered Users Posts: 9,504 ✭✭✭runawaybishop


    Zascar wrote: »
    If you shuffle a deck of cards, more than likely the order it is in, is the first time a deck of cards has ever been in that order.

    The amount of possibilities in a properly shuffled deck is phenomenal.

    If every star in our galaxy had a trillion planets, each with a trillion people living on them, and each of these people has a trillion packs of cards and somehow they manage to make unique shuffles 1,000 times per second, and they'd been doing that since the Big Bang, they'd only just now be starting to repeat shuffles.


  • Registered Users Posts: 21,569 ✭✭✭✭Tell me how


    If every star in our galaxy had a trillion planets, each with a trillion people living on them, and each of these people has a trillion packs of cards and somehow they manage to make unique shuffles 1,000 times per second, and they'd been doing that since the Big Bang, they'd only just now be starting to repeat shuffles.

    My brain activity actually spiked and then shut down trying to comprehend that.


  • Registered Users Posts: 5,480 ✭✭✭Chancer3001


    The amount of possibilities in a properly shuffled deck is phenomenal.

    If every star in our galaxy had a trillion planets, each with a trillion people living on them, and each of these people has a trillion packs of cards and somehow they manage to make unique shuffles 1,000 times per second, and they'd been doing that since the Big Bang, they'd only just now be starting to repeat shuffles.

    That can't be right.

    Sure it's just 52! Not THAT big


  • Moderators, Sports Moderators Posts: 7,210 Mod ✭✭✭✭cdeb


    Yeah, that is genuinely staggering. I did a quick google, and found that there are 80,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 combinations in a deck of cards.

    So a trillion people (10^12) times a trillion planets (which is 10^24) times a trillion decks of cards (10^36) shuffling them each a thousand times a second (10^40) times 10 billion years (10^50) times 30 million seconds a year (30^58) - still a billion times short of the 10^67 number above if my maths is correct. And in that case, you can make it a trillion people on each of a trillion planets in each of a billion galaxies...


  • Advertisement
  • Moderators, Sports Moderators Posts: 7,210 Mod ✭✭✭✭cdeb


    That can't be right.

    Sure it's just 52! Not THAT big
    Numbers can build up very quickly

    There's a story about the invention of chess. The guy who presented the game to the king was asked by the king - who loved the game - what present he wanted. He asked for one grain of corn on the first square, two grains on the second square, four on the third square, and so on through all 64 squares.

    This works out at 1,500 times more grain than is produced in the world each year today.

    The quick answer to the cards problem is 52x51x50x49.....x4x3x2x1. Which is a very big number.


  • Closed Accounts Posts: 7,480 ✭✭✭wexie


    That can't be right.

    Sure it's just 52! Not THAT big

    yeah but think of this

    for the first card you have 52 options
    for the second card you have 51 options

    and so on and so forth

    so it would be

    52*51*50*49*48*47*46*45*44*43*42*41*40*39*38*37*36*35*34*33*32*31*30*........all the way down to 2 (you can skip the 1 really)

    pop that into your calculator and let us know what the result is.

    (and that's only if I remember my math correctly, it is entirely possible that I don't)


  • Closed Accounts Posts: 20,633 ✭✭✭✭Buford T. Justice XIX


    That can't be right.

    Sure it's just 52! Not THAT big
    The number of combinations are 52x51x50x49x48x47x46x......4x3x2x1.

    And that's before 2 jokers so multiply the answer above by 54x53.

    That's a fecking big number!


  • Closed Accounts Posts: 7,480 ✭✭✭wexie


    I had a teacher explaining all of this to us way back when, at the end of the lesson he told us that when negotiating pocket money we should ask for a quarter (yes we had quarters) but ask for it to be doubled every week.

    My parents did not fall for it :(


  • Registered Users Posts: 6,778 ✭✭✭Evade


    cdeb wrote: »
    Yeah, that is genuinely staggering. I did a quick google, and found that there are 80,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 combinations in a deck of cards.

    So a trillion people (10^12) times a trillion planets (which is 10^24) times a trillion decks of cards (10^36) shuffling them each a thousand times a second (10^40) times 10 billion years (10^50) times 30 million seconds a year (30^58) - still a trillion times short of the 10^67 number above if my maths is correct.
    10^50 x 30,000,000 = 3x10^57 and you're short about 3 billion years which is another 10^17 and the 2.5+/-1.5 x10^11 stars so I think we've gone a little over 52!


  • Moderators, Science, Health & Environment Moderators, Society & Culture Moderators Posts: 6,307 Mod ✭✭✭✭mzungu


    Flamingos’ long legs appear as though their knees bend backwards, which is not the case. Flamingos actually stand on their “tip-toes” – meaning the prominent joint on their leg is their ankle! Their knee is hidden by feathers and is located close to their body.

    800px-Group_of_Flamingo.JPG


  • Moderators, Sports Moderators Posts: 7,210 Mod ✭✭✭✭cdeb


    Evade wrote: »
    10^50 x 30,000,000 = 3x10^57 and you're short about 3 billion years which is another 10^17 and the 2.5+/-1.5 x10^11 stars so I think we've gone a little over 52!

    Another 3 billion years isn't be another 10^17. I was just rounding the big bang to keep the numbers round - but if you make it 13 billion years, then you just get 13^50. So basically the same thing.

    Though I did miss the bit about "every star in the galaxy", which is about 200 billion as you note, and I did get the number of zeroes wrong in 30,000,000, so now we get the last three figures as 13^50 -> 39^57 -> 78^67 - or just ten times out from the 8^67 answer. So much closer.


  • Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 91,353 Mod ✭✭✭✭Capt'n Midnight


    That can't be right.

    Sure it's just 52! Not THAT big
    80658175170943878571660636856403766975289505440883277824000000000000 or thereabouts.


  • Registered Users Posts: 2,166 ✭✭✭Are Am Eye


    At the Flamingo Casino in Las Vegas a Card Counter playing Black Jack will remember the high and low cards already seen and calculate the probability of high cards being dealt in the next hand. Casinos counteract this by dealing from a merging of at least five decks of cards.


  • Registered Users Posts: 5,480 ✭✭✭Chancer3001


    As per my earlier post

    52!

    Is a maths symbol for

    52x51x50 ..... 4 x 3 x 2 x1


  • Advertisement
  • Registered Users Posts: 11,812 ✭✭✭✭sbsquarepants


    Are Am Eye wrote: »
    At the Flamingo Casino in Las Vegas a Card Counter playing Black Jack will remember the high and low cards already seen and calculate the probability of high cards being dealt in the next hand. Casinos counteract this by dealing from a merging of at least five decks of cards.

    The majority of people just don't have the memory or the mental arithmetic ability to properly count even a single deck. I read somewhere before that when the first books detailing how to count cards were published they actually made a fortune for the casinos via a sudden influx of get rich quick imbeciles blowing their pensions at the card tables!


  • Moderators, Motoring & Transport Moderators, Music Moderators Posts: 12,778 Mod ✭✭✭✭Zascar


    Zascar wrote: »
    If you shuffle a deck of cards, more than likely the order it is in, is the first time a deck of cards has ever been in that order.



  • Registered Users Posts: 40,413 ✭✭✭✭ohnonotgmail


    The majority of people just don't have the memory or the mental arithmetic ability to properly count even a single deck. I read somewhere before that when the first books detailing how to count cards were published they actually made a fortune for the casinos via a sudden influx of get rich quick imbeciles blowing their pensions at the card tables!

    and even if you are able to keep the info in your head the betting patterns you need to use make it obvious what you are doing. If you start winning big you find yourself barred. But like you said most people cant and casinos love people who think they have a system.


  • Registered Users Posts: 969 ✭✭✭Greybottle


    This map shows the date and method of the last official execution of people in European countries. Some stand outs are that the last execution in Portugal was in 1846, and the guillotine was last used in Germany in 1949 and France in 1977!

    DbYdcJOUQAAASOF.jpg


  • Moderators, Sports Moderators Posts: 7,210 Mod ✭✭✭✭cdeb


    The actor Christopher Lee was present at the last public execution by guillotine in France. There's even a blurry video of it on YouTube. It was in 1939


  • Registered Users Posts: 9,847 ✭✭✭py2006


    The execution of Eugen Weidmann was the last public execution in france 1939.




  • Registered Users Posts: 3,553 ✭✭✭lmimmfn


    Are Am Eye wrote: »
    At the Flamingo Casino in Las Vegas a Card Counter playing Black Jack will remember the high and low cards already seen and calculate the probability of high cards being dealt in the next hand. Casinos counteract this by dealing from a merging of at least five decks of cards.
    For those of us with crap memory, the easiest thing to do is count how many aces, 10's & picture cards have been played, picture cards & 10's can be lumped together and total aces played kept separate.
    This gives you a good idea of the overall chances of going bust or getting 20.
    Obviously its rough but if there are others playing if you bet less than them the dealer will be playing against them, so e.g if you get 16 and another player looks like they have 20 but with a lot more money to play for then dealer will try and match their 20, possibly going bust so your crappy 16 can win.
    It only works if the table is nearly full and you always bet below the others.


  • Registered Users Posts: 5,480 ✭✭✭Chancer3001


    lmimmfn wrote: »
    For those of us with crap memory, the easiest thing to do is count how many aces, 10's & picture cards have been played, picture cards & 10's can be lumped together and total aces played kept separate.
    This gives you a good idea of the overall chances of going bust or getting 20.
    Obviously its rough but if there are others playing if you bet less than them the dealer will be playing against them, so e.g if you get 16 and another player looks like they have 20 but with a lot more money to play for then dealer will try and match their 20, possibly going bust so your crappy 16 can win.
    It only works if the table is nearly full and you always bet below the others.


    Aren't the dealers obliged to act in a certain way ?

    I.e take a hit if under 16. Stop if over 16.

    There's no "trying to beat" any player at all


  • Registered Users Posts: 28,933 ✭✭✭✭Quazzie


    Aren't the dealers obliged to act in a certain way ?

    I.e take a hit if under 16. Stop if over 16.

    There's no "trying to beat" any player at all

    Yea. If a dealer gets 17 he must pay 18 or higher for example.


  • Advertisement
  • Registered Users Posts: 2,342 ✭✭✭seagull


    Aren't the dealers obliged to act in a certain way ?

    I.e take a hit if under 16. Stop if over 16.

    There's no "trying to beat" any player at all

    Yes. They have to draw if 16 or less, and hold at 17 or over.


This discussion has been closed.
Advertisement