The Magic Number➖➕by Howard Thurston

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  • Опубликовано: 27 авг 2024

Комментарии • 10 тыс.

  • @MarcosNaceli
    @MarcosNaceli 9 месяцев назад +6760

    Hey people, note this:
    * Any 3 *all different* numbers. Including 0.
    * After the first substraction: ignore the negative (-) and consider any two digit number as a three digit number filling with a zero.
    Example 1: 506-605=-99 change -99 to 099. Its reverse is 990. Finally: 099+990=1089.
    Example 2: 012-210=-198. change it to 198. Finally: 198+891=1089.
    Have fun! :)

    • @armlatv2260
      @armlatv2260 9 месяцев назад +558

      but if I take 111;222;333?

    • @SlySatirist
      @SlySatirist 9 месяцев назад

      ​@@armlatv2260 that's exactly what I was wondering about. Matter fact I chose 666 when my brother watched this video and tried to do the trick on me. Well now here i am in the comments trying to find what u do it someone pics 111 222 ...

    • @alieft
      @alieft 9 месяцев назад

      ​@@armlatv2260he said 3 different numbers

    • @nishan747
      @nishan747 9 месяцев назад +142

      But, how possible to add 0 in fron of 99 in calculator?

    • @ra-m
      @ra-m 9 месяцев назад +162

      00:07 choose any 3 different numbers

  • @niceman123x
    @niceman123x 9 месяцев назад +5510

    Pro tip - don't ask same person twice.

    • @Bunny77177
      @Bunny77177 9 месяцев назад +76

      Then they get it 😂

    • @amritvermagkp
      @amritvermagkp 9 месяцев назад +27

      Then they get it 😂

    • @internetpolice3553
      @internetpolice3553 9 месяцев назад +21

      Then they get it 😂

    • @dude_perfect833
      @dude_perfect833 9 месяцев назад +18

      Then they get it 😂

    • @Bunny77177
      @Bunny77177 9 месяцев назад +47

      Why are you all replying the same 👁️👁️

  • @ShouryaYeralkar
    @ShouryaYeralkar 3 месяца назад +74

    Legends who got 2 same numbers like 99 and couldn't reverse it

  • @fschorn
    @fschorn Месяц назад +27

    It's really a stretch to make it work when the difference is 99. For example 231-132=99. You'd need to see the 99 as 099, then reverse to 990. Adding back 990 to 99 does get you 1089.

    • @ao.6916
      @ao.6916 Месяц назад

      Must be 3 digits not 2

    • @johnym.8878
      @johnym.8878 Месяц назад

      I did it with 352, got the same

    • @FranciscoMedina-vx4uz
      @FranciscoMedina-vx4uz Месяц назад

      I didn't get with 857

    • @kundapatil9601
      @kundapatil9601 Месяц назад

      123-321=-198
      -198+891=693
      Beated

    • @slin2678
      @slin2678 Месяц назад +1

      ​@kundapatil9601 ignore the negative sign so -198 becomes 198+891=1089

  • @timlonsdale
    @timlonsdale 9 месяцев назад +1489

    Represent the number as: 1*X + 10*Y + 100*Z.
    The inverse would be: 1*Z + 10*Y + 100*X.
    Subtract the inverse and get: 99*Z - 99*X.
    Also can be written as: 99*(Z-X).
    Lets replace (Z-X) with N: 99*N.
    Lets rewrite as: 100*N - N.
    Lets rewrite as 100*(N-1) + 100 - N.
    Lets rewrite as 100*(N-1) + 90 + (10-N).
    Thus the inverse is: 100*(10-N) + 90 + (N-1).
    Add these together and we get: 99*N + 1000 - 100*N + 90 + N - 1.
    Squish together and get: 1000 + 90 - 1 = 1089
    QED

    • @Newenu
      @Newenu 9 месяцев назад +44

      I'm teacher of math. Thank you!!! 😊

    • @Xinnie_The_Flu
      @Xinnie_The_Flu 9 месяцев назад +36

      I came up to 100*N-N, then I saw your comment.😂
      Adding and subtracting 100 was a brilliant move.❤

    • @Achieve.cookie
      @Achieve.cookie 9 месяцев назад +5

      Genius bro

    • @AKgaming-or2cm
      @AKgaming-or2cm 9 месяцев назад +4

      Its real🔥🔥🔥

    • @hossameldin3896
      @hossameldin3896 9 месяцев назад +5

      جامد ياسطا

  • @benjaminfischer2163
    @benjaminfischer2163 9 месяцев назад +267

    I love the way you say "let's learn". I only wish my teachers in school would have encouraged me like you have.

    • @Sam_COD
      @Sam_COD 9 месяцев назад +1

      No your just disappointed and wish to get back in school times😂

    • @devrajdwivedi01
      @devrajdwivedi01 9 месяцев назад +2

      Stop blaming teachers dude

    • @sopanshirdhonkar969
      @sopanshirdhonkar969 9 месяцев назад +1

      Well stop blaming others, many have learnt and excelled even if it wasnt fun. 😂😂

    • @xyzydoucare
      @xyzydoucare 9 месяцев назад +4

      What have you learnt exactly from the short?

    • @benjaminfischer2163
      @benjaminfischer2163 9 месяцев назад +1

      @devrajdwivedi01 blaming? Who's blaming teachers, blaming them for what?

  • @addyckg3304
    @addyckg3304 Месяц назад +4

    Love your smile, when you talk
    ❤❤

  • @rice950
    @rice950 3 месяца назад +229

    This got me laid. Thank you

  • @muhammad9813
    @muhammad9813 9 месяцев назад +189

    If abc is the 3 different digit number we can write it algebraically as 100a+10b+c
    Then the reverse digit number will be 100c+10b+a
    Now subtract the reverse digit number from original one
    (100a+10b+c)-(100c+10b+a)
    The new number will be
    (100-1)a+(10-10)b+(1-100)c
    Or
    99a-99c
    Or *99(a-c)* ..... (1)
    Since a and c are single digit numbers i.e
    a, b belongs [0,1,2,3,4,5,6,7,8,9]
    So (a-c) will also be a single digit number.
    [But a≠0 because abc is a 3 digit number]
    Henc (a-c) belongs to [1,2,3,4,5,6,7,8,9]
    _We excluded 0 because
    a-c=0 if and only if a=c
    And we know that a,b and c are three different digits. a≠c
    Now lets substitute the other possible values of (a-c) one by one
    For *a-c=1*
    (1)=> 99×1=99
    Now add reverse
    99+99=198
    Add reverse digit number again
    198+891=1089
    For *a-c=2*
    (1)=> 99×2=198
    Now add reversed digits
    198+891=1089
    For *a-c=3*
    (1)=> 99×3=297
    Now add reversed digits
    297+792=1089
    For *a-c=4*
    (1)=> 99×4=396
    Now add reversed digits
    396+693=1089
    For *a-c=5*
    (1)=> 99×5=495
    Now add reversed digits
    495+594=1089
    For *a-c=6*
    (1)=> 99×6=594
    Now add reversed digits
    594+495=1089
    For *a-c=7*
    (1)=> 99×7=693
    Now add reversed digits
    693+396=1089
    For *a-c=8*
    (1)=> 99×8=792
    Now add reversed digits
    792+297=1089
    For *a-c=9*
    (1)=> 99×9=891
    Now add reversed digits
    891+198=1089
    Similarly for negative values of (a-c)
    Ignore the negative we will conclude with the same answers.
    I have tried to verify it by putting all possible values. I will be more than grateful if you share your kind opinion or correction.

    • @humanpixel.official
      @humanpixel.official 9 месяцев назад +8

      Reasonable. 💀👍🏼

    • @nicholasdiaz3508
      @nicholasdiaz3508 9 месяцев назад +7

      Nobody care 😂

    • @smartanon_5299
      @smartanon_5299 9 месяцев назад +6

      It was sweet and concise until the last part, thanks a lot for the explanation. (but...)
      (let d = a-c)
      99(d)+(inverted_99(d)_) = 99(11) = 1089
      I am having a hard time proving that last part but it has to do with prime numbers added to 11.
      For 2, 2+9 and 9+2, for 3, 3+8 and 8+3, 5 goes with 6, 7 goes with 4. 1 is not a prime number and doesn't go with anything hence i am having a hard time finding the rule that would render the last part of your reasoning slick and concise like the first part was...
      1089 is 33 squared, (11)(99), (11)(11)(3)(3).
      I know the answer is somewhere in this haystack, someone please find my needle lol.
      Thanks

    • @JoseJBronze
      @JoseJBronze 9 месяцев назад +1

      111*99=

    • @Jadugar4308
      @Jadugar4308 9 месяцев назад +10

      Do it with 584 😐

  • @ShreyRaj1
    @ShreyRaj1 9 месяцев назад +247

    This concept has already describe by our great mathematician RAMANUJAN

    • @patilvedant2984
      @patilvedant2984 9 месяцев назад +5

      True❤❤

    • @mdatik8721
      @mdatik8721 9 месяцев назад +7

      By ye to chota mota chiz hain sir ramanujan ki theories black hole ke eqn tak me use hoti hain 🔥🔥🔥🔥🔥🔥

    • @mrameshmrk
      @mrameshmrk 9 месяцев назад +3

      Y man you are bringing ramanujam here😂

    • @thebraveindian
      @thebraveindian 9 месяцев назад +3

      Hahaha😂

    • @user-nb3pp9ch4f
      @user-nb3pp9ch4f 9 месяцев назад +5

      @@mrameshmrkbeacause Ramanujan our proud❤🤨

  • @reubenbenjamin8128
    @reubenbenjamin8128 8 дней назад +1

    proof: it starts from the fact that the difference of 2 3 digit numbers following the mentioned rule will always be a product of 99 and any number from 1 to 9(which can be taken as x) and the subsequent result can be represented as a 3 digit number as mentioned below:
    100(x-1) +10×9+(10-x)
    the result when added with its reverse that is 100 (10-x)+ 10×9+(x-1) will exactly give 1089 always after the cancelation of x(the initial variable we took that is from 1 to 9, which is formed from the difference of the first and the last digit of the 3 digit number we initially assumed)

    • @reubenbenjamin8128
      @reubenbenjamin8128 8 дней назад +1

      how the 3 digit number representation equation was derived:
      suppose the initial number we took is 100x +10y+z, the difference with its reverse would be 100x+ 10y +z-100z -10y -x= 99x-99z=99(x-z)
      x-z will always be a variable from 1 to 9, and can be taken as another variable r so the equation now is 99r=100r-r in order to get the number into 3 digit equation format by removing the last negative digital we can carry 1 from the first digit of the 3 digit number and then the second digit and write it as 100(r-1)+10×9+(10-r) now the 3rd digit will always be positive as r is a number from 1 to 9..hence the equation 100(x-1)+10×9+(10-x) is derived

    • @reubenbenjamin8128
      @reubenbenjamin8128 8 дней назад +1

      once you are able to derive this amazing maths trick it becomes even more magical!

  • @user-ry9qd9tx9r
    @user-ry9qd9tx9r 12 дней назад

    Спасибо, это было очень достойно для фокусов с числами 👍

  • @TrainsandRockets
    @TrainsandRockets 9 месяцев назад +472

    This was discovered by Ramanujan while sitting in a taxi...
    The Math Genius of the millennia...

    • @stopcam.iso_1
      @stopcam.iso_1 9 месяцев назад +13

      Ok bro we get it

    • @rahulpathak1992
      @rahulpathak1992 9 месяцев назад +44

      That's so awesome..thank you....unless it's not. Ramanujam taxi number(story) is 1729 which is the smallest number which can be expressed as the sum of two different cubes in two different ways.

    • @mockingbird8734
      @mockingbird8734 9 месяцев назад +4

      Ramajuna, who is that?

    • @stopcam.iso_1
      @stopcam.iso_1 9 месяцев назад +35

      @@mockingbird8734 its 'SRINIVASA RAMANUJAN'
      He was the one of the greatest Indian Mathematician of modern time.

    • @CRAZY-HAAP
      @CRAZY-HAAP 9 месяцев назад +2

      ​@@rahulpathak1992correct

  • @user-fy7bl5pb9d
    @user-fy7bl5pb9d 9 месяцев назад +45

    When I was 8 I discovered that you can take any number larger than 9 and up to infinity and subtract its opposite and that number is ALWAYS perfectly divisible by 9, or 3 because 3 squared is obviously 9

    • @medicodreamer
      @medicodreamer 9 месяцев назад +1

      Wow

    • @blahblahyaps
      @blahblahyaps 9 месяцев назад +1

      11?

    • @Skyabove32
      @Skyabove32 9 месяцев назад

      ​@@blahblahyaps11-11=0 and 0 is divisible by 9 as 0/9 = 0

    • @ayamrudin7985
      @ayamrudin7985 9 месяцев назад +3

      The claim should be that the difference of any number (greater than 9 and not equal to its mirrored version) and its mirrored version, is always divisible by 9. Essentially, it all comes down to this:
      If a>0; x, y ≥ 0; x>y and a, x, y are all integers:
      D = a * (10 ^ x) - a * (10 ^ y) =
      = a * ((10 ^ x) - (10 ^ y)) = a * M
      D is divisible by 9 if M is also divisible by 9.
      M is always divisible by 9 for the same
      reason the differences 1000-10=990 and 100-1=99 are all divisible by 9.

    • @naruto11212
      @naruto11212 9 месяцев назад +2

      ​@@blahblahyapsare you in grade 1? 11-11 is 0, 0 is divisible by all natural numbers.

  • @Starculation
    @Starculation 2 месяца назад +10

    What if they have all three digits the same? E.g - If they pick 111, you subtract the reverse, 111. But then you get 0. And 0 + 0 isn’t 1089

    • @starr980
      @starr980 25 дней назад +1

      *rule. 3 different digits

    • @m1n7o
      @m1n7o 23 дня назад

      ​@@starr980 152???

    • @starr980
      @starr980 23 дня назад

      @@m1n7o consider every resulting 2digit no. To b 3 digit lyk
      152-251=-99
      Ignore negative n consider as 3 digit
      099+990=1089

    • @johndawnson
      @johndawnson 22 дня назад

      ​@@m1n7o if after subtracting with the reverse number leaves you with two digit than you put 0
      For e.g. 152-251= -99
      Now you have to put 0 after 99
      So it makes 990+099= 1089
      Hope I was clear enough 😂😅

    • @m1n7o
      @m1n7o 21 день назад

      @@johndawnson did she mentioned that?? Maybe i missed it

  • @baryonyx_289
    @baryonyx_289 2 месяца назад +2

    Three, that's the magic number, yes it is! It's the magic number!🕷️🕸️

  • @pramoddusad
    @pramoddusad 9 месяцев назад +305

    For 3 digit its 1089
    For 4 digit its 10890
    For 5 digit its 109890
    For 6 digit its 1098900
    And carry on.....if we do the same process....😍😍😍

    • @XY4yt
      @XY4yt 9 месяцев назад +9

      Doesn't work for any 3 digit #.
      Needs to be 103 or higher
      102 = 99
      101 = 0
      100 = 0
      😊

    • @user-em8xy1xj1y
      @user-em8xy1xj1y 9 месяцев назад +7

      111

    • @RupamSaha-or9td
      @RupamSaha-or9td 9 месяцев назад +5

      @XYZyt if you get 99 then add it with 990 because 99 can also be written as 099😊😊

    • @bestbeastgaming8847
      @bestbeastgaming8847 9 месяцев назад +6

      564 doesn't work

    • @theboredpersonedits11111
      @theboredpersonedits11111 9 месяцев назад

      For 2 digit ??

  • @Groundhog1471
    @Groundhog1471 9 месяцев назад +21

    I paint cars for one job, but I work in a bar for my second job and this simple thing has blown a few minds. It’s fun to see the reaction on new customers. It’s a great way to generate fun conversation and I don’t know how many will start watching your channel, but the comments I get have been fantastic. I’ve been using a few card tricks and it’s brought in new people as well. Thank you so much for teaching me. Magic brings the inner child out in everyone. Thank you so much again!
    I do know one card trick, that you may know, and if I get my internet connection back up and running after my home improvements I’ll make you a video to show you. I can’t wait. Hopefully you won’t know it, but I’m sure you do. Unfortunately I never new it’s name though. I’ll practice it more so it will be as seamless as possible like your videos.
    Take care❤

  • @tt7762
    @tt7762 16 дней назад

    I remember reading about this trick in children's books for riddles when I was a kid!

  • @jesurajrs4439
    @jesurajrs4439 2 месяца назад +40

    When 3rd digit must finish with 1 ....then your formula 🏎️ wins...

  • @dnxsol
    @dnxsol 9 месяцев назад +84

    Very nice, this will score many free drinks at the pub for me here in Ireland. Thanks for always offering easy doable tips and tricks.
    Love the channel

    • @evm6177
      @evm6177 9 месяцев назад +2

      Why ya mingy Leprechaun!!, and how about if everyone in every pub everywhere has watched this video already!? 🤓🤣😆

    • @person.probably
      @person.probably 9 месяцев назад

      I don't get many free drinks but I do know how to get the cheapest drinks.
      You see it's this magic power I have, I can drink your drink and then make it appear back in the glass. Don't believe me? Well, I don't wanna take all your money, I'm that confident, so bet you 10c i can do it.
      *Drink is drunk*
      *Weird mystic hand gestures and mumbling*
      Ah well, guess it didn't work, here's your 10c
      If you do it right whoever you got will start laughing and probably send all his mates round to you as well.

  • @bogdanmikita5477
    @bogdanmikita5477 9 месяцев назад +198

    453 - 354 = 99 to in some cases where there is a difference of 1 between first and last digit you would have to add 0 to the first result to get 1089 but it will still work just add extra step by saying: " Add 0 in the end if you got a two digit result".

    • @alektad
      @alektad 9 месяцев назад +3

      99 in the same as 099. Also this works with as many digits. With 4 digits it’s 10,989. And so on

    • @peacelover5571
      @peacelover5571 9 месяцев назад +4

      Solve this my number is 323

    • @asokaka8219
      @asokaka8219 9 месяцев назад

      ​@@peacelover5571they all have to be different number

    • @sagarmedipelly
      @sagarmedipelly 9 месяцев назад

      ​@@peacelover5571brother it should have three different numbers 🙄 but your number is 323 - where three is repeated twice.

    • @aprobator
      @aprobator 9 месяцев назад +1

      263 also

  • @senramsamy6483
    @senramsamy6483 27 дней назад +1

    Cannot ignore the negative. When negative, you cannot ADD the reverse but must substract the reverse.

    • @joaltasi
      @joaltasi 24 дня назад

      I used 123 and didn't work. Now it does. Negative but it does.

  • @louisroque157
    @louisroque157 17 дней назад

    I love her demeanor

  • @moltenbullet
    @moltenbullet 9 месяцев назад +161

    Three different numbers is key, dont forget that.

    • @deepakk4541
      @deepakk4541 9 месяцев назад +4

      Works for 100, but not 101😅

    • @Rohwi
      @Rohwi 9 месяцев назад +3

      the number only needs to be not symmetrical. Two of the same are fine as long as they are something like 221 oder 667. Only problem is something like 121 or 444.
      edit:
      even 998 is fine as long you treat the result of { 998 - 899 = 99 } as a three digit number of 099.
      099 + 990 = 1089

    • @ApayeYaksaya
      @ApayeYaksaya 9 месяцев назад +5

      Yap like 102-201=99+99😂😂😂 do u even knw Math

    • @Rohwi
      @Rohwi 9 месяцев назад

      @@ApayeYaksaya 99 read as a three digit number is 099...
      099 + 990 = 1089 ✌🏻

    • @sprintson
      @sprintson 9 месяцев назад +3

      ​@@ApayeYaksaya is 099

  • @user-pq6ln1zo8m
    @user-pq6ln1zo8m 7 месяцев назад +17

    I've watched all your videos .I love magic. Since I was 15.57 now...your very beautiful. I learned a lot. Don't stop practicing magic..

    • @xinpingdonohoe3978
      @xinpingdonohoe3978 7 дней назад

      Since you were 15.57? You track hundredths of your years?

  • @GaneshCPattanshetti
    @GaneshCPattanshetti Месяц назад +20

    I was suprised 😀 But my friend chose 999😂😂😂😂

    • @Mechantrechyrmang
      @Mechantrechyrmang 28 дней назад +2

      It should be 3 different number

    • @nikhilpanwar2236
      @nikhilpanwar2236 25 дней назад

      ​@@Mechantrechyrmang574

    • @user-md5bf8kc5e
      @user-md5bf8kc5e 25 дней назад +1

      It needs debugging😂

    • @xinpingdonohoe3978
      @xinpingdonohoe3978 7 дней назад

      The first and last digits have to be different for it to succeed. 899 or 994 or something is fine, but not 999.

  • @ROO1KAT
    @ROO1KAT 21 день назад +1

    Everyone gangster till they choose 111, 222, 131, 232, etc.

  • @FA-pd6gn
    @FA-pd6gn 9 месяцев назад +32

    Love the way she says "LetsLearn"❤

  • @dan_marko
    @dan_marko 9 месяцев назад +93

    Mathematical explanation:
    Let's say that the hundreds digit is greater than the units digit (if its the other way you will need to negate the result which is basically like negating the first operation and -(x-y)=y-x so we can continue as if it was this way to begin with) and let's call the hundreds digit "a" and the units digit "b" so a>b.
    I will also represent the numbers with their digits divided by commas so I would be able to represent digits with algebraic expressions (132=1,3,2)
    Step #1: subtract the reverse:
    Let's separate the subtraction into steps:
    A. Subtract the middle digit: the middle digit will be subtracted by itself so it does not matter. We are left with a,0,b - b,0,a
    B: Subtract the hundreds digit: as a>b we know that the result will only affect the hundreds digit. Now we are left with (a-b),0,b - a
    C: Subtract the units digit: as b

  • @BlastoiseDan22
    @BlastoiseDan22 14 дней назад

    "Pull up ur calculator"
    Ipad user : 😳😳😳

  • @shainmathew4274
    @shainmathew4274 Месяц назад +1

    198 is also a magic number, connected to same rule.
    If we choose a 3 digits ending with 0, by subtracting reverse, they get 99, by adding reverse it becomes 198.
    Eg: 120
    120-021 =99
    99 +99 =180.

    • @orioncepheus8778
      @orioncepheus8778 27 дней назад

      Nothing magic, sacred geometry..space,time and matter does end to 9... Just count the single digits ..like 360 degree is 9, 45, etc 3600 sec in hour..😊

  • @lordcat4080
    @lordcat4080 9 месяцев назад +266

    Okay, now let's learn how to make that paper box.

    • @devcache
      @devcache 9 месяцев назад +3

      😂

    • @SumitPal_OnMyWay
      @SumitPal_OnMyWay 9 месяцев назад +2

      Waiting..😂

    • @themacocko6311
      @themacocko6311 9 месяцев назад +2

      She heard you. The very next video is the box.

    • @Laughing_Central638
      @Laughing_Central638 9 месяцев назад

      😂

    • @lordcat4080
      @lordcat4080 9 месяцев назад

      yes she did! (now aggresively practicing making the box)@@themacocko6311

  • @davidsflooringco
    @davidsflooringco 8 месяцев назад +37

    She has a soothing voice

  • @amarnaths144
    @amarnaths144 Месяц назад

    ❤❤you are great. So nice smile teacher. Amarr. Magician. I practice every thing you teach❤. My guru Devi you are.

  • @davidfanj6515
    @davidfanj6515 Месяц назад

    I was just admiring the phone instead. Google Pixel phones just looks absolutely captivating.

  • @justinlee1744
    @justinlee1744 9 месяцев назад +24

    90s baby here. When the gameboy got boring i used to play with a calculator and discovered this when i was a wee kid. I thought i was a genius xD showed everyone in school the next day

    • @9_UnknownHero_9
      @9_UnknownHero_9 2 месяца назад

      The game boy got boring?! That's wild.

  • @21anandparmar77
    @21anandparmar77 9 месяцев назад +79

    Magic with maths... Kudos to S Ramanujan

  • @Random-pt7cp
    @Random-pt7cp 28 дней назад +2

    Choose any number. Double that number. Add eight to the result. Divide the new total by two. Subtract the original number. Your answer will be four.

  • @Mukesh-cy2mg
    @Mukesh-cy2mg 2 месяца назад +2

    Such a delight sitting here here india and want to learn a little 🎉 fun skill to pass your my only way to learn really liked your videos and my favourige vedio of uours is sybic cut which was done 7 years ago !!!!!!!!! But nonethless you look toooo beautiful thank you man😅❤

  • @gagandeep14111
    @gagandeep14111 9 месяцев назад +143

    *Let three digit number:*
    xyz= 100x +10y+ z
    *Reverse:*
    zyx = 100z + 10y + x
    *Subtract:* xyz-zyx = a9b
    After subtraction, the result is a9b.. where
    Middle digit is always 9 and sum of a and b is always 9.
    *Reverse again:* b9a
    *Add:*
    a9b + b9a = (a+b)/18/(a+b)
    We know a+b = 9
    Let's put the values:
    9/18/9.. Carry 1 of 18 to hundredth place, so it becomes 10/8/9.. i.e. 1089.
    No it's not magic.. simple maths...

    • @dondon25
      @dondon25 9 месяцев назад +2

      Bro

    • @axious5815
      @axious5815 9 месяцев назад +8

      Prabhu 😳🙏🙏🙏

    • @hirogirigamer
      @hirogirigamer 9 месяцев назад +1

      Mai aapke charno me sparsh hu prabhu🎉🎉😂😂

    • @Dr.freedom
      @Dr.freedom 9 месяцев назад +4

      It's not magic, but just a magical number.

    • @vongillan
      @vongillan 9 месяцев назад +2

      Nerd

  • @alex_fuji
    @alex_fuji 9 месяцев назад +384

    She's using Google Pixel. Instant like

  • @spaztekwarrior
    @spaztekwarrior 15 дней назад

    Have them turn to a book that you provide them that has at least 109 pages … have them go down 8 lines and have them read the first word.
    Then reveal that word magically on a piece of paper you prepared earlier.
    Makes this trick a little more astonishing … as long as you do it only once for the person :)

  • @damiaosilva8845
    @damiaosilva8845 19 дней назад

    Your voice is delightful ❤

  • @indianvfxschool
    @indianvfxschool 9 месяцев назад +139

    Here's why it happens:
    1. **Three-Digit Number**: Consider any three-digit number where the first and last digits differ by at least two. Let's call it ABC, where A, B, and C are its digits.
    2. **Reversing and Subtracting**: When you reverse this number, you get CBA. Subtracting CBA from ABC (assuming A is greater than C) gives a new number. This subtraction aligns with the form (100A + 10B + C) - (100C + 10B + A) = 99A - 99C.
    3. **Result of Subtraction**: Simplifying 99A - 99C, you get 99(A - C). Since A and C are at least two digits apart, the minimum value for (A - C) is 2 (e.g., if A is 3 and C is 1), and the maximum is 9 (e.g., if A is 9 and C is 0). This results in a number that is two digits long, and its first digit is always 9.
    4. **Intermediate Number Characteristics**: The intermediate number (after subtraction but before adding the reverse) is always of the form 9X9, where X is a digit. This is because the hundreds and units place will always be 9 due to the subtraction process described above.
    5. **Reversing the Intermediate Number**: When you reverse this number, it becomes 9X9 again, as reversing doesn't change the position of the digits due to its symmetry.
    6. **Final Sum**: Adding the intermediate number and its reverse, both being 9X9, will always lead to 1089. This is because 900 + 90 + 9 equals 999, and adding it to another 999 (since the reverse is the same) results in 1089.
    In summary, the specific properties of base-10 subtraction and the constraints placed on the original number (three digits, first and last digits differ by at least two) ensure that this trick works, leading to the consistent result of 1089.

    • @QMC-6
      @QMC-6 9 месяцев назад +11

      Wow you got so much time ⏲️ to waste

    • @Manas285
      @Manas285 9 месяцев назад +1

      😂😂😂. We r doing this from school

    • @prateekkumar333
      @prateekkumar333 9 месяцев назад +8

      Appreciated . Thank you❤

    • @DivyeshPatelSir
      @DivyeshPatelSir 9 месяцев назад +3

      If you Add 2 time's 999 it give you 1998 not 1089
      For that one number must b only 99 and another 999

    • @bikashchhetri8711
      @bikashchhetri8711 9 месяцев назад +1

      You are very very correct
      The firsr and last digit should differ by atleast 2 which she didnt say
      Thanks

  • @prashantrai1833
    @prashantrai1833 9 месяцев назад +64

    Exception:- Don't take the same number on first and 3rd digit 😊

    • @kirankumarkn1855
      @kirankumarkn1855 9 месяцев назад +3

      😂 yes, it acts as a barrier

    • @torigroves1048
      @torigroves1048 9 месяцев назад +9

      Yeah that’s why she said pick 3 different numbers at the beginning!

    • @karis3647
      @karis3647 8 месяцев назад +4

      That was my 10 year old's initial move. I told him he broke it. He thinks he's hilarious now.

    • @Nate-1244
      @Nate-1244 8 месяцев назад

      @@torigroves1048102 are three different numbers and it gives an end result of 0.

    • @umukuraolivier7847
      @umukuraolivier7847 8 месяцев назад

      685 is chilling 😎

  • @sujiths1868
    @sujiths1868 27 дней назад

    Pro tip, don't use the same number like 555.

  • @ghans9796
    @ghans9796 8 дней назад

    According to school house rock, 3 is the magic number.

  • @Ayushupadhyay7575
    @Ayushupadhyay7575 9 месяцев назад +406

    Bro my mother chose 333 and I got roasted so bad 💀
    Now a friend chose 231 💀💀💀

    • @hemu1668
      @hemu1668 9 месяцев назад +77

      She told to choose 3 different numbers

    • @agasthya9128
      @agasthya9128 9 месяцев назад +2

      🤣🤣🤣

    • @Ayushupadhyay7575
      @Ayushupadhyay7575 9 месяцев назад +25

      ​@@hemu1668yeah i didn't listen carefully

    • @mihirambekar9997
      @mihirambekar9997 9 месяцев назад +32

      Doesn't work with 756 either

    • @nuar5299
      @nuar5299 9 месяцев назад

      ​@@mihirambekar9997its 099 so you need add 990😊

  • @michaelparra8834
    @michaelparra8834 9 месяцев назад +4

    Well done…. This blew my daughter mind away 😅

  • @brianjlevine
    @brianjlevine 8 дней назад

    If the result of the first subtraction is negative, then you have to subtract the third number and you will get -1089.

  • @frankseng9510
    @frankseng9510 5 дней назад

    60% of the time, it works every time.

  • @NothingMaster
    @NothingMaster 7 месяцев назад +14

    1089 and 2178 are reverse-divisible numbers; the only four-digit numbers that divide their reverse.

    • @harshitgaming9962
      @harshitgaming9962 7 месяцев назад

      2002

    • @NothingMaster
      @NothingMaster 7 месяцев назад +1

      @@harshitgaming9962 The reverse of 2002 is itself, and not a different number (with the emphasis on ‘a different number’); hence it doesn’t count. Any number could divide itself, so what! We are talking about the nontrivial reverse divisors. Palindromic numbers have reflectional symmetry across the vertical axis.

    • @Vex_The_Vexillologist
      @Vex_The_Vexillologist 3 месяца назад

      ​@@harshitgaming9962were not talking about palindromic numbers, because she said three different numbers.

  • @definitiveguide8137
    @definitiveguide8137 9 месяцев назад +78

    The phenomenon you're describing with the number 1089 is a well-known mathematical trick. It works with most three-digit numbers, as long as the first and last digits differ by at least two. Here's how it works:
    Choose any three-digit number where the digits are not all the same (like 651).
    Reverse the digits to form a new number (156 from 651).
    Subtract the smaller number from the larger number (651 - 156 = 495).
    Reverse the digits of this result (594 from 495).
    Add this number to the original difference (495 + 594).
    The final result is almost always 1089. This trick works because of the properties of number manipulation and digit rearrangement

    • @fayaZZayaf
      @fayaZZayaf 9 месяцев назад +1

      Thank you, this flew right above my head. 💯♥️

    • @MrFuzziiWuzzii
      @MrFuzziiWuzzii 9 месяцев назад +17

      This isn’t an explanation, you just said the same thing she said

    • @PietroSperonidiFenizio
      @PietroSperonidiFenizio 9 месяцев назад +3

      @@MrFuzziiWuzzii no, she said any, he said most as long as there is a difference of 2.
      If not it does not work, for example
      555-555=0
      000+000=000

    • @lloydter
      @lloydter 9 месяцев назад +4

      ​@@PietroSperonidiFeniziowell I think you didn't watched it properly. She said "any" three "different" numbers not any three numbers.

    • @SevenPro777
      @SevenPro777 9 месяцев назад +2

      You can apply the same trick on four digits and also result in 9999💯💯 try this

  • @PeterSoriano-ld3yt
    @PeterSoriano-ld3yt 2 месяца назад

    I got ZERO! I asked my wife to choose any 3 digit number and she said “555” lol
    Other than that, I keep coming up with 1089 😊

  • @henrysaknung734
    @henrysaknung734 Месяц назад

    948 do this anyone 😅 anyone who gets 1089 will always be blessed 😊

  • @Aggrwalanu
    @Aggrwalanu 9 месяцев назад +156

    1089 is also knowns as Ramanujan's no. He was a great mathematician and he gave it❤😊

    • @tribalgroupinc
      @tribalgroupinc 8 месяцев назад +20

      Before he gave it away, we used to count 1086, 1087, 1088 and 1090 directly. Later on 1089 was added between 1088 & 1090.

    • @sreenathmaths
      @sreenathmaths 8 месяцев назад +24

      I think 1729 is the Ramanujan number

    • @dnfkt7191
      @dnfkt7191 8 месяцев назад

      ​@@tribalgroupinc😂😂😂😂😂❤

    • @shobhaputtamadaiah9361
      @shobhaputtamadaiah9361 8 месяцев назад +8

      it's 1729

    • @sk_sandeepp
      @sk_sandeepp 8 месяцев назад

      @@sreenathmaths I searched just after reediing above @masalamagicwithmona8117 , He went in flow without searching it.

  • @priyanshgaming7957
    @priyanshgaming7957 9 месяцев назад +33

    I am doing this in my childhood 😂 and I fool my friends many time to see this 😁😂

  • @GagHov
    @GagHov 21 день назад

    The first operation is to keep the number within the range of three or two digits that are multiples of 99.
    The second operation is to sum symmetrical numbers that are multiples of 99.
    The symmetrical number, the reversed one, is a multiple of 99, too.
    The sum of those symmetrical numbers is always 1089 = 99 * 11. Where 11 is the number of cases between 0 and 10.
    For more details, look at the comments below.

  • @rohitrawat282
    @rohitrawat282 21 день назад

    Actually worked ❤

  • @letstalk
    @letstalk 9 месяцев назад +11

    This doesn't work if the number is followed by the same digits at the start and end, eg 565, if you subtract the reverse the result is 0.

    • @MahamudHasan72
      @MahamudHasan72 9 месяцев назад

      should be 3 different number

    • @user-Spectral
      @user-Spectral 9 месяцев назад

      ​@@MahamudHasan72 but the numbers 152 doesn't work and they're diffrent

    • @pratiklachwani9455
      @pratiklachwani9455 9 месяцев назад

      She said any 3 different no dude

    • @jxstgavin2562
      @jxstgavin2562 9 месяцев назад +2

      152 minus 251 = -99
      Ignore the negative = 99
      Make it 3 digits = 099
      Add the reverse 099+990=1089

  • @AtharvaPurohit-xj4pb
    @AtharvaPurohit-xj4pb 9 месяцев назад +5

    Every time u learn from ma'am it seems easy because of let's learn ❤️

  • @user-mz5ve5cn1v
    @user-mz5ve5cn1v 23 дня назад

    I love you dude 😍

  • @lyricmakermask2224
    @lyricmakermask2224 19 дней назад

    121 left the group 😂

  • @musicbyfern1582
    @musicbyfern1582 9 месяцев назад +4

    I love your voice, it's giving me chills

  • @rahul7187
    @rahul7187 9 месяцев назад +19

    To everyone!
    Every 3 different digits works if it's done in the right way! 🙃
    Edit To replies:- I can't calculate every number so here are the two common mistakes-
    1) Listen carefully in the video if you get an answer in negative ➖ remove that and make it positive!
    2) If you get an answer as a two digit number (most commonly 99) add 0 before the number so 99 becomes 099 then add 099+990 = 1089 🤓

  • @pyaephyomg5936
    @pyaephyomg5936 19 дней назад

    that so cool❤

  • @rohansapate3890
    @rohansapate3890 2 месяца назад

    It works in some cases only.
    Try out
    121
    120 etc

  • @Ddrake995
    @Ddrake995 8 месяцев назад +4

    She makes me happy every time she pops up on my feed.

  • @davidirvingcpa
    @davidirvingcpa 8 месяцев назад +12

    The new definition of beauty.

  • @discipleofra4354
    @discipleofra4354 Месяц назад +1

    Stuff i used to do in 4th grade...

  • @liyanth
    @liyanth 2 месяца назад

    I like the video with your son.

  • @rajmaity9795
    @rajmaity9795 9 месяцев назад +6

    Thanks for this...now I gonna shine in the evening gatherings😎

  • @abhilashpatel6852
    @abhilashpatel6852 9 месяцев назад +22

    Wow her children gonna be magicians and mathematicians!!

  • @aram5642
    @aram5642 19 дней назад

    it is also magic because when multiplied by 9, it makes a palindrome version of itself: 9801. (Thanks, the great Lilavati!)

  • @sourix01
    @sourix01 23 часа назад

    Take this number 786 to see the magic of the magical number

  • @Gruuvin1
    @Gruuvin1 9 месяцев назад +102

    If they get a negative number after the first step, ignoring it is a bad idea, because if they don't clear it out and re-type it correctly as a positive number, this will not work.

    • @pankhurisingla5879
      @pankhurisingla5879 9 месяцев назад +2

      Look it in this way...
      Take any 3 digit number and calculate it's difference from it's opposite number.
      Use word difference. Difference of any two numbers is considered positive.

    • @Blazko612
      @Blazko612 9 месяцев назад +2

      Its correct ! I noticed too !

    • @Gruuvin1
      @Gruuvin1 9 месяцев назад

      @@pankhurisingla5879 a negative number minus a positive number is a negative number. Math is math.

    • @davidbroadfoot1864
      @davidbroadfoot1864 9 месяцев назад +2

      No need to clear it out. Simply multiply by "-1", OR subtract its reverse instead of adding it, OR click on the change sign (+/-) function (if one is available).

    • @bztube888
      @bztube888 9 месяцев назад +1

      "Ignoring negative", she basically ask you to subtract the smaller number from the larger one. It's the same.

  • @joemann7971
    @joemann7971 9 месяцев назад +297

    Your trick breaks if you put the smallest number in the middle. The result ends up 99 or -99., which then adds up to 198, not 1089.

    • @mohannadbujoq5501
      @mohannadbujoq5501 9 месяцев назад

      Happened to me when I tried 485
      485-584 = - 99 🤦🏻‍♂️🤦🏻‍♂️

    • @MrJuka92
      @MrJuka92 9 месяцев назад +13

      Just got 99 lol

    • @jeyjana9350
      @jeyjana9350 9 месяцев назад +10

      Three different number ….

    • @edozieokonkwo2785
      @edozieokonkwo2785 9 месяцев назад +2

      Yeah it's true

    • @ayushtank_2307
      @ayushtank_2307 9 месяцев назад +1

      I took number 918 it will end up in 99 so yeah this is not true for all numbers

  • @studentoftheword6115
    @studentoftheword6115 3 дня назад

    Amazing

  • @raushanraj7730
    @raushanraj7730 27 дней назад

    I used to do this trick in my 3rd standard back in 2007😂😂😂

  • @brianlorenz910
    @brianlorenz910 9 месяцев назад +147

    When I first heard this, I was told no repeat numbers. But it doesn't work if you say: 132 or 796 , 495, 738, etc. If the 1st and 3rd numbers are sequential, the inverce makes 99.

    • @twinkles5114
      @twinkles5114 9 месяцев назад +11

      Read the pinned comment

    • @ramagupta6055
      @ramagupta6055 9 месяцев назад +1

      382 also

    • @brianlorenz910
      @brianlorenz910 9 месяцев назад +1

      @twinkles5114 I got to it after I posted this. By then, It was too late.

    • @brianlorenz910
      @brianlorenz910 9 месяцев назад

      @@ramagupta6055 that falls under the category of " ect. "

    • @shreejan264
      @shreejan264 9 месяцев назад +14

      It still actually works..
      132-123=-99
      Then I tried to work in 3 digits, so calculation was done as:
      099+990=1089

  • @cosmosapien597
    @cosmosapien597 9 месяцев назад +31

    Let the unique digits of the number be *x* , *y* , *z* in order.
    So the number is:
    *100x + 10y + z*
    And the reverse of it is:
    *100z + 10y + x*
    Subtracting the reverse from original gives:
    *99(x-z)*
    If *x>z* let *t=x-z* ,
    else let *t=z-x*
    So the number we have, ignoring the sign, is:
    *99(t) = 100(t) - t*
    *= 100(t-1+1) - t*
    *= 100(t-1) + 100 - t*
    *= 100(t-1) + 10(9) +(10 - t)*
    Possible values of
    *t* : 1 to 9
    *(t-1)* : 0 to 8
    *(10 - t)* : 1 to 9
    so they are single digits.
    So the number we have is:
    *100(p) + 10(9) + q*
    where
    *p = (t-1)*
    *q = (10-t)*
    The reverse of this number is:
    *100q + 10(9) + p*
    Adding these together, we have:
    *101(p + q) + 180*
    *= 101(t-1 + 10-t) + 180*
    *= 101(9) + 180*
    *= 1089*

    • @alrickfernandes6715
      @alrickfernandes6715 9 месяцев назад +1

      Man I fukin hate polynomials or whatever is that

    • @6hn10fungariel5
      @6hn10fungariel5 9 месяцев назад +2

      good explanation, thanks

    • @Akim375
      @Akim375 9 месяцев назад +1

      ​@@alrickfernandes6715 It's just tedious the way he did. Although the logic is same.

    • @cosmosapien597
      @cosmosapien597 9 месяцев назад

      @@Akim375 i couldn't think of a simpler proof

    • @gauravmishra4349
      @gauravmishra4349 9 месяцев назад +1

      This is the exact I have done ✅. Mathematics is really love ❤

  • @parshwajain3086
    @parshwajain3086 20 дней назад

    I choose
    716
    Now I subtract
    716-617 = 99
    Now
    99+99 = 198

  • @shaktisingh993
    @shaktisingh993 25 дней назад

    Very old thing, we have been doing it since childhood.😅😅😅

  • @JohnnyManu40
    @JohnnyManu40 9 месяцев назад +6

    You can technically do it with larger than 3 digit numbers, but you need to start adding in a decimal place to make it equal 1089. Otherwise you start getting things like 108090.

    • @JohnnyManu40
      @JohnnyManu40 9 месяцев назад

      @@USE_YOUR_BRAIN So, I realize it's not how you would probably normally treat a decimal. But yeah, if you use ###.# instead of ####, it will work. Last I tried at least.

  • @samofrabat
    @samofrabat 9 месяцев назад +28

    Don't talk or ask an Engineer or Mathematician...they'll prove you wrong before playing

    • @BS89.
      @BS89. 9 месяцев назад

      Then they got shocked 😂

    • @khaledmahmoud7037
      @khaledmahmoud7037 9 месяцев назад

      @@BS89.
      no
      try 796

    • @saw6386
      @saw6386 9 месяцев назад +1

      Don't use numbers that end in 00 or start and end with the same number.

  • @mittelwelle_531_khz
    @mittelwelle_531_khz Месяц назад

    Not a native English speaker, my problem is with using the word "number" once for something I would also call a "number" ("Zahl" in German) but also for what I would rather call a "digit" ("Ziffer" in German).
    _"Start with a number of any three but mutually diffferent digits ..."_ would have been my way to start this game.

  • @pavithransailendran305
    @pavithransailendran305 2 месяца назад

    Here's the exception, those subracted numbers should result in a 3 digit number.

  • @Mikumegabytis
    @Mikumegabytis 9 месяцев назад +168

    This was given by great Indian Mathematician Srinivas Ramanujan ❤

  • @vyshakreghukumar995
    @vyshakreghukumar995 9 месяцев назад +191

    Below is a very very long and rather convoluted mathematical explanation of this problem.
    Let the first digit of the first number be a, second digit be b and third digit be c.
    Then, first number = 100a + 10b + c
    Reverse of this number= 100c + 10b + a
    First number - its reverse
    = 100a + 10b + c - (100c + 10b + a)
    = 99a - 99c
    = 99 (a - c)
    The next set of calculations is to find the 3-digit formula of the above number.
    = 99 (a - c - 1) + 99
    = 100 (a - c - 1) - a + c + 1 + 90 + 9
    = 100 ((a - c) - 1) + 90 + (10 - (a - c))
    Thus, we have the first digit of the difference as (a - c) - 1, second digit as 9, and third digit as 10 - (a - c).
    The reverse of the above number is =
    100 (10 - (a - c)) + 90 + ((a - c) - 1)
    Sum of the above 2 numbers
    = 100 ((a - c) - 1) + 90 + (10 - (a - c))
    + 100 (10 - (a - c)) + 90 + ((a - c) - 1)
    = 100(a - c) - 100 + 90 + 10 - (a - c) + 1000 - 100(a - c) + 90 + (a - c) - 1
    = 1000 + 90 - 1
    = 1089
    One peculiar scenario where this rule might fail is when the difference of the first number and its reverse is 99.
    E.g. 201 - 102 = 99
    In this case, 99 + 99 = 198 which is not equal to 1089.
    However if we consider 99 as a 3-digit number, that is 099, then we have 099 + 990 = 1089.

    • @simpletonballsack
      @simpletonballsack 9 месяцев назад +7

      Yes, you have to assign zero value to the hundreds column before reversing it.

    • @ananyahuddar2063
      @ananyahuddar2063 9 месяцев назад +3

      that's a task. thanks!! ❤

    • @varunvermavvocean
      @varunvermavvocean 9 месяцев назад +2

      Needed this thanks

    • @BRKNSERGIO
      @BRKNSERGIO 9 месяцев назад +1

      😊 👍

    • @debashishsmith
      @debashishsmith 9 месяцев назад +3

      U r a math genius 👍👍👍

  • @StarTropicsKing
    @StarTropicsKing 7 дней назад

    651 is a Twin Cities zip code.

  • @IrshadAnsari-w2n
    @IrshadAnsari-w2n 12 дней назад

    I choose 524 and it can't reverse 99 in the end I got 198 answer
    But your ideas work
    People are trying some like yours and some comment on your video
    Great 👍

  • @VivekYadav-hk2mv
    @VivekYadav-hk2mv 9 месяцев назад +4

    We can ask them if the sum is negative you have to subtract it by the opposite of your answer this will give you -1089

  • @ayushtripathi2309
    @ayushtripathi2309 9 месяцев назад +378

    If you take 756 and subtract it reverse from original
    756-657=99
    Now adding reverse of 99 which is 99 we get 198
    Edit:I found a new thing that if the last and first digits have a difference of 1 then after subtracting the reverse of the number from the original we get 99 and adding reverse of 99 which is 99 we get 198 👍

  • @pandafox0
    @pandafox0 2 месяца назад +1

    I like your north face t shirt ❤

  • @ZahidHussain-wk1zl
    @ZahidHussain-wk1zl 2 месяца назад

    My daughters loved it

  • @Star_cricket.45
    @Star_cricket.45 9 месяцев назад +324

    Kon kon video dekhne ke baad apne phone ke calculator me check karne gaya 😂😂😂😂😂😂

  • @sumanraniverma9884
    @sumanraniverma9884 9 месяцев назад +23

    Salute to the great Indian mathematician
    Sir ramanujan for this theory

    • @mayankbaber9384
      @mayankbaber9384 9 месяцев назад +2

      What? he proposed it?

    • @Laughing_Central638
      @Laughing_Central638 9 месяцев назад

      ​@@mayankbaber9384yes he's

    • @Laughing_Central638
      @Laughing_Central638 9 месяцев назад +3

      ​@@mayankbaber9384hes the person who knows the value of infinite ♾️ 😅

    • @sanjivshukla9362
      @sanjivshukla9362 9 месяцев назад

      No I think the magic no ramanujan has given is not 1089 it's 1729

    • @abinashdas6040
      @abinashdas6040 9 месяцев назад

      ​@@mayankbaber9384Never Proposed it,
      Most People really don't appreciate his far more superior work in Advanced Number Theory as much as Trivial Results in ordinary Arithmetic which they claim he discovered it(It's the case of Cultural Superiority).

  • @divyanshkumar5053
    @divyanshkumar5053 2 месяца назад +1

    The edge case is when the first difference is less than three digits it'll be a problem

  • @thewildplayer2860
    @thewildplayer2860 2 месяца назад +1

    Three digits number 888 reverse number is 888 by subtracting both we got 0 and by adding 594 in 0 the answer is 594😅😂