Added: 2 years ago
From: singingbanana
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  • What a coincidence, just this morning, going to school, i was thinking on creating a magic square and how it works. Cool.

  • Add 4 to all those numbers and all the tricks will add up to 65 using the numbers 1-25.

  • my god i thought it was all going to equal sixty five........

  • Genius everyone?

  • how you do that too fast?????

  • 9 9 9 9 9

    9 9 9 9 9

    9 9 9 9 9

    9 9 9 9 9

    9 9 9 9 9

    Everything... the point is to take 5 random numbers >.< which would make 25*24*23*22*21 or 6375600 combinations to make a 45 :D

  • Once you see the pattern, this is actually quite fast to generate. The only problem is that if it's done the intuitive way in front of an audience, everyone would instantly see the trick. :D So it's probably unavoidable to have to mix the order around a bit to make it less obvious and that will require some concentration.

  • I hate apples i like annoying oranges and i bet mismag gave u thise cards

  • 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45

  • HOW DO YOU DO THAT???? I'm stumped -.- :( make a video on how to do it?

  • okay so his voice is amazing...i couldnt concentrate on what he was saying :P

  • There is a fairly simple algorithm to this 5x5 magic square. Notice where he starts out and you will find that the square 2,2 (row,column) is important.. Sorry singingbanana i could not resist..

  • Do you gone expain how your are doing this

  • I wonder if we do this the same way. I know you've seen my excel program which does it, but I've only just taken to doing it by hand. If we do this the same way, you are very fast. It takes me about 5 minutes right now, and I certainly couldn't talk coherently during the operation.

  • @Error081688 Neither did I!

  • i was listening on how many numbers add 2 45 and i was like...of corse

    ...of course

  • i got here from ericsurf6 who sent me to mismag822 who sent me here

  • If you have seen the method for making one of these were you put 1 in the 3rd colum 1st row then go up one and one right and put two etc. now if n/5<13 replace 1 with n/5-12 if not n/5-13.

  • mismag brought me here

  • Please post a tutorial!

  • wow a banana is singing

  • I CANT CALCULATE THE WHITE DOTS !!!!!!

  • Hey dumbasses the top left number is 19...

  • It's actually fairly easy when you see the system. It took me a while to figure out how to start out and how to adjust the last five numbers without the need to reuse previously used numbers. Thanks for this little brain tease.

  • you idiots the first number is 19 not 14

  • Is it possible to construct a 3 dimensional magic cube?

  • tutorial plz.

  • You make math way more fun and entertaining than any of my teachers/profs did in high school/college. Love this kind of stuff. Nice to see this kind of stuff used for entertainment. (also nice to see that I can enjoy math haha). Great video.

  • works in a pub

    because everybody is pissed?

  • Rape! Run away from this video!

  • my mind just got bombed

  • I'm guessing this is some form of sudoku?

  • Does James Grime own SINGINGBANANA?

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  • HEY GUYS THE NUMBER AT THE LEFT CORNER IS 19 NOT 14 ~

  • @Ashishbijaygupta oh! hahahahaha!

  • How do you like them Apples :D:D Good Wil :)

  • i am pretty sure the top row doesn't come on 45....

    19+2+15+2+11=49

    correct me if i'm wrong:$

  • @vssnfrankiej 19+2+15+(-2)+11 = 45. the second two is a negative.

  • @onedollarbill94 ah ok, my mistake:P

    i'm not really in to this puzzles:P

  • @vssnfrankiej It is 19+2+15-2+11=45, the second two is actually a -2.

  • @vssnfrankiej If you watch until the end it becomes 19+2+15+-2+11=45.

  • lol put captions

  • the number on the top left is a 19 not a 14

  • The second example seems to be exactly like the 4x4 in the other video, and involves the number 42 (or 44, depending on how you think about it...). I'm still thinking about the first example - that's quite different, or seems to be...

  • Oh no, wait - I get it now :) Nice touch, subtracting to get the negative numbers. Neat video!

  • the upper most left is not 14 its 19...

  • Thanks a lot for this video! This one is so much cooler then the 4x4 magic square, I'll definitely use it myself!

  • I love Apples!!!!!!!!!!!!!!!!!!!!

  • amazing

  • i dont get it..

  • How the hell does he do that?

  • at the left column who writes a one like that? Is that a 1?

  • Woah... I'm impressed!

  • 1:10, left colom: 13+7+6+14+0=40=/=45

  • @imorio it's 19, not 14... -_-

  • please tell us how

  • what is the mathematics behind the 4x4 and the 5x5 square. To create such a square I imagine you take a standard magical 5x5 square and add or subtract a certain number from it to create a magical square for the specific number in question.

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  • mismag822 and Ericsurf6 got of 100k views between them and didn't make the trick.

  • cool

  • nice vid and a clever idea to use an easy trick.

    did you try other square sizes? at the first moment it looks like it works in any size, but im not sure if all combinations like the crosses still work. cant find a quick solution for that =(

  • Top left is a 19 not a 14. I believe it's just written a bit unclear. It is completely accurate....as far as i have checked that is. ;^)

    Now explain WHY it works. Not THAT would amaze me even more.

  • i thought the # wuz 65 not 45

  • You should add an annotation"19" over the top left corner number from :41 to 3:14. This would prevent people from mistakenly thinking that it is a "14"

  • why are you taking your hand away all the time? like you are using another one which is premade

  • Could you do a tutorial for this...say...at 5000 subs?

  • make a 10x10

  • oh shit lol pullin out the negative digits nicely done actually totally awesome but i see how its done it would take me forever because i add a little slower then most but this will be nice practice to keep me in mathematical shape

  • everyone thinks the top left hand corner says 14 its 19 people

  • u shoulda said "how do u like those bananas"

  • damn, 45 must be the new answer to the universe

  • That was awesome! Naturally everyone is going to try and find a flaw. I first saw your pi trick on scam school. I really enjoy math and Hope I can do some of these things one day

  • ohh, you like to do pubs in tricks too? *hic*

  • you said 45 but you you wrote 65

  • my mind EXPLODED

  • @TheLittleHousePA the top row doesn't add up to 45 either

  • @rafathama Yes, it does.

  • @singingbanana Well, 14+2+15-2+11=40

  • @TheLittleHousePA Well, good job that doesn't say 14 then.

  • @singingbanana Oh, sorry, I

    t looked like a 14. I'll be careful next time. =)

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  • @singingbanana I can't blame him, it looks like 14, but I know it's a 19 (checked and it works with 19)

  • @singingbanana

    Unfortunately your 19 looks like a 14 to me as well. I had look closer to see that ii is actally a 19.

  • @TheLittleHousePA it's 19 not 14

  • @TheLittleHousePA

    It's 19+2+15-2+11=45

  • @rebskie1 19+2+15-2+11=49

  • @ExtremeHardcoreGamer

    lol, 19+2 =21 +15= 36 -2=34 +11=45

  • @xLittleVinnie sry, dont saw the "-" thought it was "+" ^^

  • @TheLittleHousePA He's right, it says 19.

  • @TheLittleHousePA z.z fail.

  • @TheLittleHousePA x.x its a 19 instead of 14.

  • @TheLittleHousePA its a 19

    

  • @TheLittleHousePA that doesn't equal 40 anyways haha.....that equals 44

  • @myfaceispurple You forgot to minus 2, I think.

  • @TheLittleHousePA 14+2+15-2+11 =/= 40 o.o

  • @omghahas

    Okay, that doesn't make any sense.

    How does that not =40.

    I know I was wrong before but now you are wrong.

  • @TheLittleHousePA

    14+2+15+2+11=29+2+2+11=40+2+2=­44

  • @TheLittleHousePA Its 19+15+11 = 45 {the 2 & -2 cancels each other} :)

    Peace \m/

  • @TheLittleHousePA It says 19+2+15+-2+11=45.

  • @singingbanana You should add an annotation"19" over the top left corner number for the from :41 to 3:14. This would prevent people from mistakenly thinking that it is a "14"

  • @singingbanana The top row = 49.i used a calculator any1 thank of that????!!!!

  • @joshi12311 top row, 19+2 = 21, 21+15=36, 36-2=34, 34+11=45, What the hell did you type in your calculator?

  • @joshi12311 The second 2 is a negative 2. So it is 45. You punched in 19 +2 +15 +2 +11, but its 19 + 2 + 15 -2 + 11.

  • @rafathama the 14 you say of is a 19

  • @rafathama its a 19 not a 14

  • @rafathama it's 19 not 14.

  • the left column doesn't add to 45. lol.

  • @TheLittleHousePA can't read numbers lol. Maybe he/she should take more care before posting lol. Writing lol is really obnoxious lol.

  • @singingbanana I think it's because the 19 looks like a 14.

  • @singingbanana lol

    

  • @singingbanana you should really write properly.

  • @TheLittleHousePA Its 19+0+6+7+13 = 45... :)

    Peace \m/

  • @TheLittleHousePA That's not 14 it's 19! (The upper left corner)

  • I only count 120 ways to get to the sum. I figure for the "pluses" and "crosses" (2 sizes for each), these are uniquely determined by their center (25 choices since we're allowing wrapping). The rows, columns, and cross-diagonals are preserved by wrapping, so there are only 20 such sums. Perhaps I am missing some of them?

  • Yup, those are the nice 'pattern' sums. There are a thousand more, just not in nice patterns.

  • It is ont right if you check all this boxes they arent all add 45

  • Do you by chance have a book called "Hexaflexagons and Other Mathematical Diversions"?

  • I don't have that particular book, but by the sounds of it I probably have a lot of that material in other books.

  • are you going to reveal how this is done? pls

  • awesome

  • Please explain how to do this.

    By the way...I agree with doughside, that marker is annoying.

  • damn I hate the sound of that marker... like scratching a chalkboard O_o

    tho it's cool

  • make a tut

  • cool

  • halfway through the vid and i had to stop because this is bugging me. The first colum adds up to 40 not 45.

  • The number in the top left corner is 19 not 14.

  • can some one plz mak a tutorial?

  • Hi Jim, It's arthritis, I cannot understand why it works, ie. how does this mechanism of building the magic square work. Can we actually build magic squares of nxn of any size? And do they all work on the principle of determining the values of

    n^2-n of the elements in the magic square?

  • Magic squares exist for all sizes, there are a few methods for constructing them. And in this video I used a more complicated method than just altering the last n.

  • Yes Jim, but you are still using the same principle. This is what i noticed,

    There are only 5 numbers that you are determining, the rest of the 20 numbers move in a modular fashion.

    Let a,b,c ...denote the column

    Let 1,2,3 ...denote the ranks

    the numbers you are calculating are a1, b4, c2, d5, e3,

    the rest of the elements are actually modular of each other ( i.e. +4) in each number.

    Can you do a third 5x5 sequence for us to see how you determine the modulus interval?

  • I guess if you were to start placing the numbers from 1 to 20, you would start with the centre

  • and it is moving in L shape

  • I guess what Error was talking about was an increase of modular 4, in each of the 20 non-calculated numbers, yeah, I solved 90 and 89 as well.

    But guess was still a little dissatisfied, is there an algorithm to work out the way the numbers should be placed and why does it work that way?

  • And I begin to understand why those 5 numbers have to be in those specific locations.

    Because in those locations, each diagonal/ combination of 5 number will only have one number which is calculated.

    But i still cannot understand why the rest of the numbers move the way they do?

  • I'll send you a message explaining it.

  • Well, I made a similar magic square for a sum of 91, but that was a little too easy. Is there really a way to calculate this or was 68 a little less than random?

  • and I did one for 90. Also too easy though. Bah, what method are you using?? Anyway, lunch is over. I'll comment at you later.

  • 68 was random, first two cards out the pack, just as I presented it.

  • 14+2+15+(-2)+11 = 40 not 45

  • Nope. Look again, that's 19+2+15+(-2)+11.

  • that's a 19, not a 14

  • dude, epic. were you a college math major? and if so where lol?

  • I will make a tutorial today or tomorrow and upload it here on youtube.

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  • aw c'mon Joe, why ruin the fun? Let singingbanana do one if he wants it to be known.

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  • There are definitely patterns in the method you used to construct those two squares, though you did hide them a little. I don't feel like analyzing it at all right now, but if or when I do, your secret is safe with me.

  • please make a tutorial!

  • @weflylow2183 I made a tutorial if u still need 1

  • @xxstrxxnowxx where is your tutorial?

  • @weflylow2183 Uhm my friend got on my youtube and deleted it to be a jerk a while ago. want me to re upload it?

  • @xxstrxxnowxx yes please!

  • @weflylow2183 Alright i gate go to work right now so ill upload it when ill get back. The method i use is the one he does on the second 5x5 one.

  • @weflylow2183 Alright i gate go to work right now, so ill post it when i get back.

  • @xxstrxxnowxx thank you!

  • @weflylow2183 Aight its up it might not be the best tut. ever but ... enjoy :)

  • Why do you move the pen out of shot after eat number is written?

  • You're just being picky now.

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  • I'm happy, but I want a tutorial! plzzzzz!!!

  • That was great, hope you post more vids like this, give our brains a good workout you know, as we try and discover how you do it =D

    Peace

  • How on earth did you do that!?!

  • You're just showing off now! Good video though. :-)

  • SingingBanana you're brilliant!

  • Will you post a tutorial on this?

    I already amazed my algebra teacher with the 4x4. Maybe I could make his jaw unjoint when I show him this ;D

  • can u teach me to do pub in tricks??

  • That was an incredible slip of the tongue. Doh.

  • After working on it, I think I may be on the verge of working out how you do it. I just need to work on it to find out what determines the shift in the 20 non-significant numbers.

  • Please tell me how to do that before I melt!

  • brilliant! will recommend to family and friends, as usual with your vids!

    i wish you could come to my country (israel), if you do, be sure to post something on your channel. We've got a huge department of mathematics in Haifa, would love hearing you live!

  • Maybe one day. It can happen.