■ What is Modular Arithmetic? | An introduction to the strange world of mathematical time-telling

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  • Опубліковано 1 жов 2024
  • What is modular arithmetic? In this video I'll introduce you to the strange world of mathematical time-telling that is modular arithmetic!
    What is the final digit of 7 to the power of 100? Can 4003 be written as the sum of two squares? Is 1,200,304,501 divisible by 3? All these are questions that are made much simpler by using modular arithmetic!
    In this video we'll go over the basics of what modular arithmetic is, and how to answer different questions when working in different modulos. I'll also explain the applications of modular arithmetic and why it's so important!
    Modular arithmetic is a fantastic tool for answering funky questions about numbers - and thus a great tool to add to your mathematics tool kit :)
    Here is the modular arithmetic hand-out which contains the formal definition of when two numbers are congruent to each other, as well as proofs of the addition and multiplication theorem: www.dropbox.co...
    Click here for a mini-series of videos on how to solve a variety of modular arithmetic questions:
    • ► Modular Arithmetic m...
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КОМЕНТАРІ • 117

  • @crazylemon8749
    @crazylemon8749 2 роки тому +27

    This video deserves 12 MILLION VIEWS not 12k!!!! I learned modular arithmetic In 30 minutes after struggling with it for ages. After watching every video in your series I was able to not only complete my homework but get full marks in my homework and test I literally can't thank you enough!!!!!!

    • @mathsunboxed
      @mathsunboxed  2 роки тому +4

      That’s so lovely to hear!!! Thank you so much your comment made my day 😃 good luck with the rest of your studies!

    • @RajendraPrasad-zc6kh
      @RajendraPrasad-zc6kh 3 місяці тому

      😂

  • @zenoncodes8771
    @zenoncodes8771 2 роки тому +4

    "You wouldn't say 16 o'clock" ...
    People in the military: 🤨.

  • @houseofeufori
    @houseofeufori 3 роки тому +16

    I've spent HOURS trying to get my head around this topic and you've made it so simple to understand in just a couple of minutes. THANK YOU!

  • @sheriherlihy8405
    @sheriherlihy8405 Рік тому +4

    This is the most clear explanation of Modular Arithmetic I have seen. Thank you! Also, your voice is so pleasant to listen to!

  • @atomiczeus9696
    @atomiczeus9696 3 роки тому +10

    OMG YOU ARE SO UNDERRATED!! This was absolutely fantastic !!!

  • @samsamson1414
    @samsamson1414 3 роки тому +6

    you did better than my teacher

  • @abdarafi
    @abdarafi 3 роки тому +3

    This video is congruent to 3 months of class

  • @husseinasrasalah7348
    @husseinasrasalah7348 3 роки тому +7

    Thank you very much. Your way of explaining the subject is excellent, understandable and enjoyable. I would give you 5 stars.

    • @mathsunboxed
      @mathsunboxed  3 роки тому +1

      Thanks so much for your feedback - means a lot!😊

  • @MrPabloguida
    @MrPabloguida 2 роки тому +3

    Holy shit, it's all about the methods. This girl just nailed it. Best explanation about modular arithmetic out there.

  • @toni-jay1129
    @toni-jay1129 2 роки тому +4

    i've been struggling with this for HOURS, your video has explained everything so perfectly and clearly, thank you so much!!!!!! you deserve more views and subscribers♡♡♡♡

  • @harrylinn8249
    @harrylinn8249 2 роки тому +2

    First of all, i don't know about Modular arithmetic at all. But, now, you give me all the answers I want. Thank u. I appreciate your work.

  • @timothystrong7545
    @timothystrong7545 3 роки тому +1

    i have seen youtube videos with more views but less quality explanation. thanks sis

  • @anangelsdiaries
    @anangelsdiaries 5 місяців тому +1

    Amazing content, you've got a gift for this stuff.

  • @ogorchukwuofili7319
    @ogorchukwuofili7319 2 роки тому +3

    Hands down the best explanation of modular arithmetic on the internet(I only watched 3 videos before arriving at this video though, lol!) . Thank you!

    • @ogorchukwuofili7319
      @ogorchukwuofili7319 2 роки тому

      quick question: i tried 5 + 16 (mod 3) and using the identity, I got 3 (mod 3) but when i added 5 and 16 = 21 and did 21 (mod 3) , I got 0. why is that?

    • @prajjwalmayur5649
      @prajjwalmayur5649 2 роки тому

      @@ogorchukwuofili7319 She forgot the explain that if the result of the operation is >n (n from "mod 'n'") you will have to do the mod operation again on the result. Does it make sense to you? All the examples had their results as less than n so yeah, good question.

  • @scienceandnaturegreatfacts8796
    @scienceandnaturegreatfacts8796 2 роки тому +1

    Am just angry at who ever disliked this video

  • @gattoalaparato
    @gattoalaparato 2 роки тому +2

    After watching a lot of videos about modular arithmetic and not understanding a thing, this is it, this is the best one by far. Thanks for putting examples!

  • @zenoncodes8771
    @zenoncodes8771 2 роки тому +1

    Awesome video and only one that really clicked. Helped a lot !!!!

  • @Tiktok_cring08
    @Tiktok_cring08 2 роки тому +2

    High quality content with intuitive explanations that cleared many misconceptions I had.Well done

  • @adhiyanthaprabhujeyashanka2091
    @adhiyanthaprabhujeyashanka2091 2 роки тому +1

    Very simple to understand, your explanation is better than most books I have come so far, thank you, you got a new subscriber from India 🙏🙏

  • @saitutor
    @saitutor 7 місяців тому

    truly amazing explanation for this complex topic. I am math online tutor ...Amit from India.

  • @flares
    @flares 11 місяців тому

    You're actually wrong about 26 hours. If we had 26 hours in a day the clock would go up to 13 not 12. So 26 would be 0 not 2.

  • @lisaitocummings9280
    @lisaitocummings9280 3 роки тому +3

    Hi Beth! Thank you for the fantastic explanation! I just found your channel and I think I've found a gem in the math UA-cam community :D Thanks so much from a fellow college student, cheers!

    • @mathsunboxed
      @mathsunboxed  3 роки тому +1

      Hi! Amazing, thanks so much!! Glad you like it ☺️ best of luck with your studies!

  • @julianf693
    @julianf693 3 роки тому +1

    Hello again. Will you do a video on multiplicative inverses modulo n by any chance? :) pls

    • @mathsunboxed
      @mathsunboxed  2 роки тому

      Sorry I only just read your comment! I’ve taken a break from making videos for a bit but I’ll get back to it soon.. I’ll definitely add this to the list! Good luck in the meantime 😊

  • @yoonnan
    @yoonnan Місяць тому

    Absolutely amazing. This is the clearest explanation on modular arithmetic I've come across.

  • @VFryt
    @VFryt Рік тому

    Correct me if I'm wrong in this calculation
    142.3 mod 29.5
    142.3/29.5 = 4.82....
    round down to 4
    29.5 * 4 = 118
    142.3-118 = 24.3
    so 142.3 mod 29.5 is congruent to 24.3?

  • @Franchely_6824
    @Franchely_6824 2 роки тому +1

    Excellent explanation, really helps me. Thank you!

  • @ARVELAEZ
    @ARVELAEZ Рік тому

    🎉🎉🎉 Great thank you so much but can you please explain what happens when you get like negative number for example -7 mod 6

  • @Biancaboris4629
    @Biancaboris4629 Рік тому

    o my God i cant believe it i have been struggling with modular arithmetic for more than 3 weeks but ever since i watched this video for me it is more simpler than ABC I💖💖💖💖💖💖💖 THIS VIDEO

  • @saeedahmad627
    @saeedahmad627 2 роки тому +1

    God bless you

  • @sean75005
    @sean75005 3 роки тому +1

    You explained it VERY Well

  • @eujin9709
    @eujin9709 Рік тому

    you are realy doing good... keep doing... small love from the viewer.

  • @angelesfigueredo5740
    @angelesfigueredo5740 2 роки тому +1

    Great explanations, your lowkey one of the best teacher out there.

  • @_Ella_vanilla
    @_Ella_vanilla 2 роки тому

    You are amazing
    Thank you
    God bless you😇

  • @Biancaboris4629
    @Biancaboris4629 Рік тому

    CAN YOU MAKE A VIDEO ON SOLVING EQUATIONS WITH MODULAR ARITHMETIC

  • @expansivegymnast1020
    @expansivegymnast1020 3 роки тому +2

    Amazing video. I'm doing Discrete Math 2 and you've really helped me.

    • @mathsunboxed
      @mathsunboxed  3 роки тому

      That’s great to hear! Thanks so much for your feedback!☺️ good luck with your course!

  • @narendranmanickavasagam1329
    @narendranmanickavasagam1329 11 місяців тому

    What a wonderful explanation in simple terms

  • @sandyakumuduni4992
    @sandyakumuduni4992 2 роки тому

    one lesson of my exam is completed.thank you so much

  • @LuzJessaAnabieza-je7ng
    @LuzJessaAnabieza-je7ng 7 місяців тому

    Thank you so much for this video❤

  • @bulaloclaizaa.956
    @bulaloclaizaa.956 3 роки тому +1

    thankyouuu so much your a good teacher for me :)

  • @roosterlanka
    @roosterlanka 8 місяців тому

    Love from Colombo University

  • @anuraghooda8439
    @anuraghooda8439 3 роки тому +2

    Really well explained! Keep up the good work!

  • @alikarimp.chumsworth5674
    @alikarimp.chumsworth5674 3 роки тому +1

    Thanks very much for this , came from Dr James from OOMC episode 1 and is really useful to understand quadratic residues in episode 0 !

    • @mathsunboxed
      @mathsunboxed  3 роки тому

      Fantastic! Glad you found it helpful!😊

  • @lopsangdlama
    @lopsangdlama Рік тому

    could someone tell me why is 2%3 =2 ?

  • @JanSands-i7i
    @JanSands-i7i 10 місяців тому

    Clear, concise, wonderful! Beth’s explanations create understanding!

  • @ricarrio-d7352
    @ricarrio-d7352 Рік тому

    If I could give this a rating out of 5 stars......I'd give you 6!😁Great work. Thank you for your knowledge and effort.

  • @missgift2539
    @missgift2539 Рік тому

    You're simply a Math Angel. Love you so much. God richly bless you.

  • @islamraslan6168
    @islamraslan6168 Рік тому

    High quality content with intuitive explanations that cleared many misconceptions I had.Well done

  • @nascomfub
    @nascomfub 2 роки тому

    Absolutely brilliant!

  • @kushanthamadusanka2421
    @kushanthamadusanka2421 Рік тому

    THANK YOU VERY MUCH!

  • @Morningrain-dk4wx
    @Morningrain-dk4wx Рік тому

    I know modular arthritic is really hard especially when i am hopeless at maths but in 12 minutes and 42 seconds boom! I got it , Am i lucky that this was the first channel i clicked on for this subject Thank you very very much .😎 Modular arthritic

  • @garyanfimau7203
    @garyanfimau7203 3 роки тому +1

    This is a great explanation! Thank you!

  • @appujpawar
    @appujpawar Рік тому

    Thank you very much sister you explained the topic very clearly ,you are 1000 times better then our teachers . 👏👏

  • @NikiPlazz
    @NikiPlazz Рік тому

    😇 Beth, you are an math Angel, I have seen more that ten video lectures on the subject, but no one explains the three methodologies like you, you have to give lectures in Cambridge University ! Huge thank you !!!!!!

  • @benjamino.b5305
    @benjamino.b5305 3 роки тому +1

    Due to what atomic zeus said
    I have automatically subscribed to your channel. Love you😘👍
    And thank you for sharing your ideas

  • @suslinkdontclick6042
    @suslinkdontclick6042 2 роки тому

    thank you! Im so glad you mentioned cybersecurity. Im trying to learn modulo to write cryptographic algorithms!

  • @germanrobledo9291
    @germanrobledo9291 Рік тому

    Well done! Your explanation style is very effective. The path you take is very elegant. I look forward to additional content. Thank you.

  • @abdullahmasud7573
    @abdullahmasud7573 2 роки тому

    thank you so much!

  • @delailabongcas7321
    @delailabongcas7321 2 роки тому

    I was so dum at this thing

  • @realSurajRaj
    @realSurajRaj 3 роки тому +1

    Nicely explained 🔥🔥

  • @georgepoletes4459
    @georgepoletes4459 Рік тому

    Super-clear explanation of an advanced concept for my 11-year-old son!

  • @hipolitonovido8651
    @hipolitonovido8651 6 місяців тому

    I'm a new subscriber when I find this video 😊

  • @ahyesthatguy60
    @ahyesthatguy60 2 роки тому

    Thank you 😭😭

  • @niajmorshed8245
    @niajmorshed8245 20 днів тому

    THANKS !!!!!

  • @omkarsahu8531
    @omkarsahu8531 Рік тому

    thanks so much

  • @samuraikaratedojo9493
    @samuraikaratedojo9493 10 місяців тому

    can I contact you?

  • @ganganijayathilake7178
    @ganganijayathilake7178 Рік тому

    Thank you.

  • @ToanPham-wr7xe
    @ToanPham-wr7xe 2 місяці тому

    😮

  • @jelmarkdangkatkilingsohot5343
    @jelmarkdangkatkilingsohot5343 3 місяці тому

  • @jingcai5488
    @jingcai5488 3 роки тому

    Thank you! I finally can understand it. This video deserves more watches!

  • @enjoyyourfreetimeeiyhme6078
    @enjoyyourfreetimeeiyhme6078 2 роки тому

    thanks

  • @shamineywalsh-dupuis6520
    @shamineywalsh-dupuis6520 2 роки тому

    Very well explained. Thanks

  • @jackbenjamin6756
    @jackbenjamin6756 3 роки тому

    really great, brushed up on some discrete math w the help of this video!

  • @ellentv3709
    @ellentv3709 2 роки тому

    Thank you it helps a lot. ❤️😊

  • @arianeparadis6439
    @arianeparadis6439 7 місяців тому

    I'm an extreme case of visual learner because I have such a hard time to understand mathematical concepts without a visual real-world application and I can finally say that after watching at least 15 videos on modular arithmetic I finally understand the basic concept. Thank you so much!

    • @mathsunboxed
      @mathsunboxed  6 місяців тому

      Thank you! So glad to hear it helps! Good luck on your modular arithmetic journey... :)

  • @visualbree
    @visualbree 2 роки тому

    The sense in this. Thank you so much

  • @Aurora-z1e
    @Aurora-z1e 2 роки тому

    perfect 1, got this really well.

  • @dddd-ci2zm
    @dddd-ci2zm 2 роки тому

    Excellent enunciation!

  • @ana-mariagarlau798
    @ana-mariagarlau798 3 роки тому

    amazing!!!!!! i owe you one ;)

  • @sababatamanna2117
    @sababatamanna2117 3 роки тому +1

    Great explanation!

  • @julianf693
    @julianf693 3 роки тому

    Loved the video thank you. Where is the link to the pdf?

    • @mathsunboxed
      @mathsunboxed  3 роки тому

      Amazing, no problem! If you look at the description below the video (you might have to click to expand it out) there’s a link to Dropbox where you can download it! Hope that helps 😊

    • @mathsunboxed
      @mathsunboxed  3 роки тому

      Here’s the link! www.dropbox.com/s/3sn5p55sm0p3m5m/ModularArithmetic_MathsUnboxed_Handout.pdf?dl=0

    • @julianf693
      @julianf693 3 роки тому

      @@mathsunboxed Thank you!!:)

  • @Jon_Zeku
    @Jon_Zeku 3 роки тому

    you are such a math angel. sheesh, no one could explain this half as good.

  • @conniehedra4168
    @conniehedra4168 4 роки тому

    Great explanation of modular arithmetic!!

  • @godseguy
    @godseguy 2 роки тому

    Are you british?

    • @ARVELAEZ
      @ARVELAEZ Рік тому

      I’m quite sure 😅

    • @godseguy
      @godseguy Рік тому

      Yes she is 😂

  • @antoniogb2540
    @antoniogb2540 4 роки тому

    How come you don’t have more subs & views. Your content is awesome!

    • @mathsunboxed
      @mathsunboxed  4 роки тому

      Antonio GB thank you so much!! Means a lot! Hopefully the channel will grow more soon :)

  • @chitrajohn7781
    @chitrajohn7781 3 роки тому

    Watched many videos under this topic, no one was so clear as you. Thq.

  • @hubertg7100
    @hubertg7100 3 роки тому

    Wow! Outstanding tutorial!

    • @mathsunboxed
      @mathsunboxed  3 роки тому +1

      Thank you so much! Glad you liked it :)

  • @mgoddette1
    @mgoddette1 3 роки тому

    That was so cool!

    • @mathsunboxed
      @mathsunboxed  3 роки тому

      Thank you!! I always think modular arithmetic is one of the coolest areas of maths!😍