The mathematical secrets of Pascal’s triangle - Wajdi Mohamed Ratemi

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  • เผยแพร่เมื่อ 22 ส.ค. 2024
  • View full lesson: ed.ted.com/less...
    Pascal’s triangle, which at first may just look like a neatly arranged stack of numbers, is actually a mathematical treasure trove. But what about it has so intrigued mathematicians the world over? Wajdi Mohamed Ratemi shows how Pascal's triangle is full of patterns and secrets.
    Lesson by Wajdi Mohamed Ratemi, animation by Henrik Malmgren.

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  • @MindYourDecisions
    @MindYourDecisions 9 ปีที่แล้ว +2129

    This is one of the best math videos I've seen all year--so many topics covered and explained well. I also enjoyed learning about the origins of Pascal's triangle in other cultures.

    • @youssofrabie5236
      @youssofrabie5236 9 ปีที่แล้ว +16

      +MindYourDecisions point out the explaination, please!
      cause I thought he was just telling stuff in the video
      but first let's try to agree on a definition to the term explaination.
      propose one, hence I'll look for explaination in the videos, or pick the easier way
      of course if you have time to do so. You're understandable if not!

    • @FD1CE
      @FD1CE 8 ปีที่แล้ว +7

      +MindYourDecisions, There exists much much much more properties of this magical triangle

    • @MrDamojak
      @MrDamojak 6 ปีที่แล้ว +9

      Gregorio Salazar When you are ready keep watching the video.

    • @alexpagnetti585
      @alexpagnetti585 6 ปีที่แล้ว +22

      hey it's presh talwalker

    • @ezramahle1472
      @ezramahle1472 6 ปีที่แล้ว +1

      haha

  • @nayutaito9421
    @nayutaito9421 9 ปีที่แล้ว +377

    For (x+y)^n, use Pascal's triangle.
    For (x+y+z)^n, use Pascal's tetrahedron.
    For (x+y+z+w)^n, use Pascal's pentachoron (,which is in 4D)!

    • @leosong829
      @leosong829 4 ปีที่แล้ว +17

      Wtf

    • @louiswong921
      @louiswong921 3 ปีที่แล้ว +3

      cool

    • @Navvye
      @Navvye 3 ปีที่แล้ว +5

      Man, did that guy love expansions!

    • @leosong829
      @leosong829 3 ปีที่แล้ว +10

      @QuantumRat2005 oh i understand that. but wtf is pascals pentachoron

    • @andreaslind6338
      @andreaslind6338 3 ปีที่แล้ว +10

      @@leosong829 it's a four dimensional solid, that gives numbers in 4 dimensional space, just as Pascal triangles gives numbers in 2 dimensional space.

  • @AnstonMusic
    @AnstonMusic 9 ปีที่แล้ว +944

    I had no idea how the Pascal's triangle was applicable to combinatorics, that's so cool!

    • @AnstonMusic
      @AnstonMusic 9 ปีที่แล้ว +24

      ***** You might wanna check the title of this video. Besides, who cares as long as we're talking about the same thing?

    • @xxuncexx
      @xxuncexx 9 ปีที่แล้ว +5

      +Anston Music honestly who gives a flying feather?

    • @AccuphaseMan
      @AccuphaseMan 9 ปีที่แล้ว +1

      +Emperor Theodor Tronét I'm persian, so this is probably bias, but i agree

    • @AccuphaseMan
      @AccuphaseMan 9 ปีที่แล้ว

      +Anston Music Why is it either dashie or fluttershy?

    • @AnstonMusic
      @AnstonMusic 9 ปีที่แล้ว

      Dean Vidafar Uhh, I really don't know, I think I'm going to switch it around soon enough, I don't have a "best pony".

  • @MatematicaRio
    @MatematicaRio 9 ปีที่แล้ว +3032

    Amazing! You've just missed the Fibonacci Sequence in this triangle.

    • @loriefranceschi2590
      @loriefranceschi2590 9 ปีที่แล้ว +173

      +Matemática Rio And the Golden Ratio using Fibonacci Sequence in the Pascal's Triangle.

    • @MatematicaRio
      @MatematicaRio 9 ปีที่แล้ว +15

      +Rafael Moraes tenho um que fala do triângulo de Pascal e outro de Sierpinski. Pode procurar aí.

    • @loriefranceschi2590
      @loriefranceschi2590 9 ปีที่แล้ว +8

      +Rafael Moraes the video does mention other mathematicians who came up with the triangle. In most of the Western world we call it Pascal's Triangle.

    • @luccamarcal4119
      @luccamarcal4119 9 ปีที่แล้ว +8

      Nossa n esperava vc aqui, vc é um mito

    • @denelson83
      @denelson83 8 ปีที่แล้ว +12

      And the Chebyshev polynomials.

  • @oskarlindelof9685
    @oskarlindelof9685 8 ปีที่แล้ว +605

    You can also use pascals triangel to check if a number is prime or not. Go to the n:th row and ignore the ones. If all the remaining numbers are devissible by n, then n is prime. If they are not all divissible, then n is not prime.

    • @cubicardi8011
      @cubicardi8011 6 ปีที่แล้ว +8

      oskar johansson nice!!!

    • @pedronunes3063
      @pedronunes3063 6 ปีที่แล้ว +5

      oskar johansson Nice one.

    • @pedronunes3063
      @pedronunes3063 5 ปีที่แล้ว +48

      @@adam-markgheczi4577 No, row 3 is 1 3 3 1.
      1 2 1 is row 2 and works as well

    • @pedronunes3063
      @pedronunes3063 5 ปีที่แล้ว +29

      @@adam-markgheczi4577 The first 1 alone is the row 0.

    • @imrannaseer3095
      @imrannaseer3095 5 ปีที่แล้ว +5

      I was looking for such a comment.thnx bro

  • @Nightsearch
    @Nightsearch 9 ปีที่แล้ว +1003

    Didn't understand half of this, still loved it.

    • @adflicto1
      @adflicto1 9 ปีที่แล้ว

      +Nightsearch xD

    • @thelightcrystals8332
      @thelightcrystals8332 9 ปีที่แล้ว +2

      same

    • @miaa7097
      @miaa7097 8 ปีที่แล้ว +19

      u didn't get abused by math like I did lol

    • @ramprasath219
      @ramprasath219 5 ปีที่แล้ว +8

      You can watch it once more. Because I understood it while watching it for the first time. You should also listen, not just watch!

    • @weebghurl790
      @weebghurl790 4 ปีที่แล้ว

      Fr HAHAHA

  • @RomanNumural9
    @RomanNumural9 5 ปีที่แล้ว +57

    I had a math Prof where every year for his discrete math course he would just look at the Pascal triangle, make a pattern and design a problem around it to see who could make the connection

  • @Verlisify
    @Verlisify 9 ปีที่แล้ว +1236

    I enjoyed Pascal's triangle in 10th grade. I was finding a lot of really crazy patterns about the triangle before we learned about them as well as stuff in next year's course and I did pages of notes that were outside of the curriculum. I thought up a lot of theoretical stuff in the video and some crazy stuff that I forgot about. The school system doesn't like learning and thinking though, I thought I would impress my teacher by creating my own notes and problems that were beyond what we were learning to show my comprehension of it. I was finding ways of developing predictive patterns and structures beyond the Sirpinski Triangle. I did that instead of the assigned work, she disregarded everything and failed me. It killed my passion for math so hard that I dropped the course and took basic math courses to pass instead of AP, My once fiery passion for math is still dead to this day.

    • @Danieleghedix
      @Danieleghedix 9 ปีที่แล้ว +189

      +Verlisify that's such a shame though...such a sad story..teachers play such a huge role in everyone's future passions and aspirations and very few people realize that.

    • @Verlisify
      @Verlisify 9 ปีที่แล้ว +107

      +Daniele Ghedalia absolutely, some teachers I really liked and kept with that. I took multiple culinary classes because my cooking teacher was great and made it fun to learn life skills and was ok with experimenting in recipe deviations. I brought in a recipe I made at home and it became something we made in the next week!

    • @shweet7891
      @shweet7891 9 ปีที่แล้ว +26

      read the deliberate dumbing down of America you're right, it's free pdf.

    • @simoncarlile5190
      @simoncarlile5190 9 ปีที่แล้ว +206

      +Verlisify I feel ya, man. In seventh grade my teacher told our class to use 22/7 for pi. I entered it into a calculator and saw that it had a repeating pattern, but I happened to know that pi doesn't repeat. I asked her and she said that 22/7 was "basically pi". So I did a little research and discovered 377/120 was more accurate. I used that on a test and missed every question involving pi. When I talked to her and pointed out my value gave a better answer, she said I was wrong solely because I hadn't done what she told me to do.
      So in high school and beyond, I do just enough in class to pass, but I'm always writing down ideas (series of numbers, weird ways to generate constants, etc.) in my own notebook. Fuck formal education; learn math or anything else that interests you in your own way, and don't give up on it because some asshole tries to control how you think.

    • @Verlisify
      @Verlisify 9 ปีที่แล้ว +63

      +Simon Carlile Wow, thats upsetting. I have had my run in with stupid teachers, its about the answer key and not properly teaching people anything

  • @nikulitroblox
    @nikulitroblox 8 ปีที่แล้ว +388

    I was so fascinated with the pascal's triangle when I was 12 and saw a lot of shortcuts to math formulas. I showed it to my math teacher one day hoping it would help some of my classmates who found math to be difficult. She just dismissed the idea and said we better stick to the traditional formulas.

    • @alejandronavarro4128
      @alejandronavarro4128 5 ปีที่แล้ว +87

      Thats good thinking tho. Use every tool at your disposal. Work smart, then work hard.

    • @silentoccasion4359
      @silentoccasion4359 4 ปีที่แล้ว +52

      Gemnicole just dont tell the teacher that you are using them

    • @Jess-fo8sp
      @Jess-fo8sp 4 ปีที่แล้ว +8

      I know that feeling >w

    • @Brahvim
      @Brahvim 3 ปีที่แล้ว +7

      School hates us. Thanks.

    • @DhrithionVocals
      @DhrithionVocals 3 ปีที่แล้ว +41

      I hate it when you still get the correct answer using a different and more efficient method but the teacher says you have to do it HER way...

  • @SkinsFirstGeneration
    @SkinsFirstGeneration 8 ปีที่แล้ว +141

    this guy's voice is so fucking nice

  • @omegasys8863
    @omegasys8863 7 ปีที่แล้ว +3191

    i swear this is the same guy's voice but with 50 thousand different names

    • @harkrits.nagpal6505
      @harkrits.nagpal6505 6 ปีที่แล้ว +103

      Omegasys it's Addison Anderson

    • @sabriswish
      @sabriswish 5 ปีที่แล้ว +163

      dudes voice makes me wanna clear my throat

    • @aliaj.shafira7203
      @aliaj.shafira7203 5 ปีที่แล้ว +286

      He is only the narrator, not a person who givea the lesson

    • @johnsonlawalgm
      @johnsonlawalgm 5 ปีที่แล้ว +98

      No the person who created the lesson is the name that you are seeing but the voice name isnt shown

    • @aliaj.shafira7203
      @aliaj.shafira7203 5 ปีที่แล้ว +4

      @@johnsonlawalgm I mean this one

  • @ra_mry3062
    @ra_mry3062 4 ปีที่แล้ว +10

    I did not realize that I was assigned ASMR in my math class... this dude’s whispering and the rhythmic clicking made me sleepy

  • @samithhegde1753
    @samithhegde1753 8 ปีที่แล้ว +176

    I'm in 9th grade and I'm crazy about Maths. This is the first time I actually heard about Pascal's tangle and I so desperately wanted to 'discover' a pattern on my own. I observed one after looking and thinking about it for 10 minutes, but something tells me this pattern has already been observed. Nevertheless, I'm quite proud of myself that I did this.
    If we look closely at the 4th diagonal-like/slant row, we can observe that the next alternate numbers in that row is the sum of the present number and the square of a natural number - the no. starts with 1 and keeps increasing for every alternate number.
    I'm not sure many of you understood what I told but I'll give an example :
    The 4th slant row is - 1,4,10,20,35,56,84,120,165,220 and so on.
    10 = 1 + 3^2
    20 = 4 + 4^2
    35 = 10 + 5^2
    56 = 20 + 6^2
    84 = 35 + 7^2
    120 = 56 + 8^2
    165 = 84 + 9^2
    220 = 120 + 10^2
    ...............

    • @cheongziyong8871
      @cheongziyong8871 8 ปีที่แล้ว +35

      Congratulations, you've just rediscovered the tetrahedral numbers. How about a challenge? Find the rule that dictates the sequence of numbers that run exactly down the middle of the triangle (1,2,6,20...).

    • @samithhegde1753
      @samithhegde1753 8 ปีที่แล้ว +16

      +Cheong Ziyong They're called tetrahedral numbers? Sorry, I didn't know about them.
      And it's been well over 20 minutes, I've been trying to find a pattern, but I'm not able to. I searched in Wikipedia too, but I couldn't understand a thing over there. Something about binomial coefficients. Could you please explain it to me and tell me what the pattern is, in simple terms?

    • @cheongziyong8871
      @cheongziyong8871 8 ปีที่แล้ว +13

      They are basically the central coefficient (the number in the front) of the expansion of (x+y)ⁿ. For example, (x+y)²=...+2xy..., (x+y)⁴=....+6xy.... and so on. You can generate them using 1/√(1-4x)

    • @samithhegde1753
      @samithhegde1753 8 ปีที่แล้ว +5

      +Cheong Ziyong I understood the first part, but what do you mean it can be generated using 1/ _/^(1-4x) ?

    • @cheongziyong8871
      @cheongziyong8871 8 ปีที่แล้ว +6

      1/√(1-4x) is simply the generating function. It means that 1/√(1-4x)=1+2x+6x²+20x³+...

  • @luksum7128
    @luksum7128 6 ปีที่แล้ว +22

    They taught us at school that the Pascal’s triangle holds the answer to (x+y)^n but what they didn’t tell us was how amazing the triangle really is and how many answers it contains to so many mathematical problems. Thank you for bringing to my attention the amazingness that is the Pascal’s triangle.

  • @ariztrad
    @ariztrad 8 ปีที่แล้ว +436

    So the 5th row is in 4 dimensions

    • @TheRedstoneTaco
      @TheRedstoneTaco 8 ปีที่แล้ว +40

      EXACTLY

    • @krisnaga91
      @krisnaga91 8 ปีที่แล้ว +22

      my fucking mind is blewn

    • @TheRedstoneTaco
      @TheRedstoneTaco 8 ปีที่แล้ว +42

      I can use a formula I created to go into infinite spacial dimensions. It took me a whole week to solve it but I was so glad when I did it.

    • @mistakesweremade58
      @mistakesweremade58 7 ปีที่แล้ว +6

      What is infinite special dimensions?

    • @TheRedstoneTaco
      @TheRedstoneTaco 7 ปีที่แล้ว +23

      A flat plane in space is the second spatial dimesnion. A line is the first spatial dimension. I am talking about a special set of polygons called triangular-based polygons formed in all of the infinite amount of spatial dimensions. Like the fourth spatial dimension, fifth spatial dimension, sixth, seventh, etc.
      I made a formula concerning them.

  • @TheRedstoneTaco
    @TheRedstoneTaco 8 ปีที่แล้ว +10

    Those snappy animations and musical points were just mesmerising

  • @shay3355
    @shay3355 4 ปีที่แล้ว +43

    Honey : *i wanna have kids...*
    Me , an intellectual : *hold my Pascal's triangle*

    • @BludMonger
      @BludMonger 3 ปีที่แล้ว

      Hold my maths 😂😂😂

    • @Perririri
      @Perririri 2 ปีที่แล้ว +1

      Normie

  • @IndigoIceman
    @IndigoIceman 9 ปีที่แล้ว +10

    Great and very interesting video! Since I first learned about the Khayyam Triangle (I studied throughout undergrad with an Iranian professor and she taught me the habit of calling it Khayyam), I've found it to be one of the most beautiful and profound concepts in mathematics.

  • @ShawnRavenfire
    @ShawnRavenfire 9 ปีที่แล้ว +393

    It's the Triforce!

    • @sidneytan1615
      @sidneytan1615 9 ปีที่แล้ว +2

      I c u in every TEDED vid doe lol

    • @vboy360
      @vboy360 8 ปีที่แล้ว

      +Shawn Ravenfire lol
      XD

    • @slimslimslimslimslim
      @slimslimslimslimslim 8 ปีที่แล้ว

      Teghsbshehejdyekdteje its a try force

    • @JaytleBee
      @JaytleBee 8 ปีที่แล้ว +1

      +Shawn Ravenfire EVERYONE says that! It's so annoying! It's not a religious object from a video game, it's one of the most awesome fractions ever!

    • @ducc5198
      @ducc5198 8 ปีที่แล้ว +2

      No it's a fractal and a really amazing set of numbers

  • @Laittth
    @Laittth 4 ปีที่แล้ว +10

    Whenever I see Sierpinski's triangle, I can't stop my self from thinking about a tri-force made of tri-forces

  • @eredin2376
    @eredin2376 9 ปีที่แล้ว +17

    Now I remember the poster of Pascal's Triangle in my High School math class. I never cared for it until now.

  • @RTillero70
    @RTillero70 9 ปีที่แล้ว +259

    TED-Ed.....please add captioning or subtitles to all your videos! A number of deaf and hearing impaired audiences, including myself, would benefit from this so we do not get left behind.

    • @camilleabby6022
      @camilleabby6022 6 ปีที่แล้ว +7

      Rebecca Grant they got subtitles

    • @anujarora0
      @anujarora0 6 ปีที่แล้ว +29

      Rebecca Tillero turn on the caption.When you see the videos on TH-cam there are three dots on the right side corner.Click on the dots and turn on the captions and God bless you😊😊

    • @cortneymaitland4429
      @cortneymaitland4429 5 ปีที่แล้ว

      You're not missing much

    • @Mxnh
      @Mxnh 4 ปีที่แล้ว +17

      @@cortneymaitland4429 yes he is

    • @whycantihaveaproperusernam9384
      @whycantihaveaproperusernam9384 3 ปีที่แล้ว +2

      Me, seeing this comment after TH-cam removed community captions:

  • @nagachika.g
    @nagachika.g 5 หลายเดือนก่อน +2

    Parents didn't force us to learn maths for nothing. I regret not pushing my parents to force me to have a passion for maths when I was a kid. Maths truely is the greatest thing ever.

  • @kentjohnduga6833
    @kentjohnduga6833 8 ปีที่แล้ว +41

    I am inspired by his challenge in his last sentence: What might we find next? Well it's up to you.

    • @anmol3
      @anmol3 5 ปีที่แล้ว

      Primes

    • @arcadioleon7048
      @arcadioleon7048 4 ปีที่แล้ว

      pascals trihedron (3d triangle)

  • @TerryMun
    @TerryMun 8 ปีที่แล้ว +16

    We know that numbers in the Pascal's triangle corresponds to the coefficients of (x+y) raised to the power of the row number-aka the "binomial coefficients" (see 1:06). However, what's really amazing is that a recent paper has used this as a test for prime numbers. The test is simple: if all the coefficients that are more than 1 are divisible by the power, the power is prime.
    For example, raising to a power of 2 gives us: 1, 2, 1. 2 is divisible by 2. So 2 is prime.
    Raising to a power of 3 gives us: 1, 3, 3, 1. 3 is divisible by 3. So 3 is prime.
    Raising to a power of 4 gives us: 1, 4, 6 ,4 1. 6 is NOT divisible by 4. So 4 is not prime.
    Raising to a power of 5 gives us: 1, 5, 10, 5, 1. 5 and 10 are both divisible by 5. So 5 is prime.
    And the list goes on... ;)
    This test is known as the AKS primality test.

    • @AdhiNarayananYR
      @AdhiNarayananYR 8 ปีที่แล้ว +1

      +Terry Mun This is amazing :)

    • @TerryMun
      @TerryMun 8 ปีที่แล้ว +1

      ***** Might be known, but not proven until recently.

    • @TerryMun
      @TerryMun 8 ปีที่แล้ว +1

      That has been proven, yes, but what the AKS test is the first one that satisfies all of these: polynomial, deterministic, unconditional and global :) it leverages on the combination components logic, but the original intuition you have mentioned was not proven as useful tool to check of primality until the paper was published.

  • @dilbert2182
    @dilbert2182 9 ปีที่แล้ว +9

    *puts on Pascal's Triangle glasses* AAAH THE POINTED EDGES!

  • @bravemortal
    @bravemortal 6 ปีที่แล้ว +2

    everything you mentioned can be explained like this
    since it represents the binomial coefficients of (x+y) ^n
    1) now let x=y=1 which makes it 2^n so if you add all numbers in a line you will end up with a number that can be represented as 2^n
    2)let x=10 and y=1
    =>every time x being raised it represents the decimal position while every time y is raised it just corresponds to 1
    for example take (x+y)^2 = x^2 + 2xy + y^2
    now take x=10 and y =1
    (10+1)^2= 10^2 + 2*10*1 +1^2
    now RHS can be written as
    1(10^2) + 2(10^1) + 1(10^0)
    notice how the numbers in brackets represent the positional weights of our decimal system.
    now on LHS we have (10+1)^2=11^2
    so that's why we always end up with a 11^n number
    3) now the triangle can be explained like this
    to make a triangle with n rows (the arrangement should be as shown in the video) the number of spheres you need is sigma(n) or simply sum of n natural numbers
    for example for a triangle of 4 rows we need 4*(4+1)/2=10 spheres . since if we check the roots of each number inte 3rd diagonal we will find out that we are summing up the n natural numbers in this case n=position of the number in the diagonal
    4) now for the part of the tetrahedron
    we can imagine this as the above traingles being arranged on one another in order that is always the triangle below nth triangle ( triangle of n rows) will be (n+1)th triangle (triangle of n+1 rows)
    we can now think this as summing up of sum of n numbers
    to which we can derive the formula as number of spheres reqired = 1+3+6+....+sigma(n)
    and if we trace back to the origins of each number in the 4th diagonal and rearrange them we will end up with such series...
    5) now since we know that each row in the triangle is related to the binomial coefficients of (x+y)^n
    relating to binomial theorem you can tell that each number is nothing but (n-1)C(z-1) where n is the row and z is its position in that row and that is what we do to find combinations and with a little bit of more for "probability"
    i hope this helps someone to understand better

  • @mikeblack9109
    @mikeblack9109 8 ปีที่แล้ว +147

    Mathematicians are some of the smartest people in the world.

    • @mikeblack9109
      @mikeblack9109 8 ปีที่แล้ว +2

      ***** wat

    • @anmol3
      @anmol3 5 ปีที่แล้ว +4

      Physicists are too.
      Though I like maths more. 😂

    • @simran210
      @simran210 4 ปีที่แล้ว

      well nah durrrrrrrrrh

    • @leosong829
      @leosong829 4 ปีที่แล้ว

      Yes

    • @hiteshaithani2618
      @hiteshaithani2618 4 ปีที่แล้ว

      @Jeff Sklownski thanks you i am also a mathematician

  • @dawsy1000
    @dawsy1000 7 ปีที่แล้ว +4

    My favorite pattern in Pascal's Triangle is that if you draw a diagonal line down the triangle, wherever you like, then at the row you stop, go one number in the opposite horizontal direction, and you will get the sum of all the numbers in the line you drew (not including the one in said row).

  • @kentlab3850
    @kentlab3850 9 ปีที่แล้ว +1532

    i knew it, illuminati's invented math confirmed

    • @ireallyhatemakingupnamesfo1758
      @ireallyhatemakingupnamesfo1758 9 ปีที่แล้ว +59

      No, the illuminati is math, there's no denying, the illuminati controls the entire fabric of reality, both abstract and concrete

    • @MouseGoat
      @MouseGoat 9 ปีที่แล้ว +2

      +I really hate making up names for this kind of stuff so illuminati = god, this anser so much but rase som rather interesting questions.

    • @shweet7891
      @shweet7891 9 ปีที่แล้ว +5

      illuminati here, we didn't invent math, we have a secret. triangle is composed of nothing but mathematics. no conspiracy theories though about being pop stars and secret rulers and lizards. that's just propaganda to destroy our efforts to reveal the secret

    • @shweet7891
      @shweet7891 9 ปีที่แล้ว +4

      +banana aya playa illuminati are not satanic 666 religious cases

    • @elliotville7820
      @elliotville7820 6 ปีที่แล้ว

      Get out 👉🚪

  • @KINGKOHIRR
    @KINGKOHIRR ปีที่แล้ว +3

    And this video is recommended by prestigious BRAND Mini University BHAVANS 👏👏🏆🏆

  • @Holobrine
    @Holobrine 7 ปีที่แล้ว +3

    I like the geometric interpretation of a triangle in which the nth row corresponds to an n-dimensional cube.
    Row 0 is 1 (just a point).
    Row 1 is 1-1 (a line segment).
    Row 2 is 1-2-1 (a square, but a pair of points added on the diagonal).
    Row 3 is 1-3-3-1 (a cube; sliced into a point, two triangular vertex figures, and another point).
    This pattern continues through dimensions and actually generates n-dimensional polyhedra. Remember that diagonal that was the integers? In geometric terms, it's a point, a line, a triangle, a tetrahedron, a 5-cell, and so on.

  • @user-vz2wn4mq1b
    @user-vz2wn4mq1b 5 หลายเดือนก่อน +3

    why these interesting topics are not told in school

  • @wrenk
    @wrenk 4 ปีที่แล้ว +7

    4:03 I love how this guy says 12

  • @CubicParadox
    @CubicParadox ปีที่แล้ว +1

    I LOVE THIS VIDEO ! I just love those math videos that show perfect animation (cute) instead of just scribbling on a whiteboard. Five stars to you!

  • @NoriMori1992
    @NoriMori1992 7 ปีที่แล้ว +60

    I went to school and thought I knew Pascal's Triangle. Then I watched Numberphile and thought I knew Pascal's Triangle. Then I watched this.
    …And then I read the comments.

  • @samusamu1998
    @samusamu1998 7 ปีที่แล้ว +63

    - *But if you add thousands of rows, you get a fractal known as...*
    - TRIFORCE!
    -*Sierpinski triangle*
    - Oh

    • @Tippex_Official
      @Tippex_Official 3 ปีที่แล้ว +1

      I was gonna say something like that

  • @DeceitNLie
    @DeceitNLie 4 ปีที่แล้ว +8

    Blaise Pascal: Hey this is an amazing triangle! Look at all these patterns of math!
    Illuminati: *Stay right where you are.*

  • @NotCommon_Foh_1795
    @NotCommon_Foh_1795 5 หลายเดือนก่อน +1

    That was a great breakdown! I definitely needed it. Because I have no idea what is happening in class with it! lol

  • @iamcute7487
    @iamcute7487 3 ปีที่แล้ว +3

    Before I die, I would dedicate a decade of my life just figuring out how many surprising things can this triangle reveal and I will demand a nobel prize if I ever discover one😩

    • @leonardojago7997
      @leonardojago7997 3 ปีที่แล้ว

      It means you live forever in a dream in the universe where you remember snipits of your last life because fate takes to the same place there’s no avoiding it unless you know that already then you get your memories more fluent and some times have strange dreams tbh there’s a lot hidden about this in spirits and everything to do with magic and creation just so people know

  • @KINGKOHIRR
    @KINGKOHIRR ปีที่แล้ว +3

    Modala video
    Appreciate your work 🎉
    And this video is recommended by prestigious BRAND Mini University BHAVANS 👏👏🏆🏆

  • @ajoeannabrown9563
    @ajoeannabrown9563 5 ปีที่แล้ว +3

    Pascal's triangle cal also be used for set theory, more specifically union sets nCr can yield two things. The first being the expansion equation for the union of infinitely many sets.That's, nCr specifically provides the alternative negative and positive intersect sets. Eg. (AUBUC) =A + B + C - (AnB + AnC + BnC) - AnBnC. .. which also lends itself to prob. theory. The second is, the P(AuBuC) = P(A) + P(B) + P(C) - P(AnB) - P(AnC) - P(BnC) + P(AnBnC). I'm still learning and working on the Statistical applications which uses Pascal's Triangle.

    • @boxYFA
      @boxYFA 5 ปีที่แล้ว

      ...nice work...thanks for sharing your idea/s about it...(all the way from a freshmen in Philippines)
      It would help a lot for more applications in YMIITP

  • @ramjeeyadav3998
    @ramjeeyadav3998 2 ปีที่แล้ว +1

    Maths is the language of nature. Blessed are those who can speak in maths.

  • @Benjamin-vf5wn
    @Benjamin-vf5wn 3 ปีที่แล้ว +1

    Blaise Pascal was born in Clermont-Ferrand, Puy-de-Dôme 'département', France; he was born 50 km (30 miles) away from where I live. He was born in a house close to the cathedral of Clermont-Ferrand and I've ever walked in the place where this house was (it no longer exists and there in an inscription on the ground...)

  • @rajeshsharmajaipur
    @rajeshsharmajaipur 6 ปีที่แล้ว +26

    I take pride in being an Indian whenever it associates us among one of the first inventors/discovers of important scientific things. 😊

    • @skylarnoel487
      @skylarnoel487 4 ปีที่แล้ว

      Me too!!

    • @Sarabheswaran7010
      @Sarabheswaran7010 2 ปีที่แล้ว

      👏👏👏

    • @jameshanson536
      @jameshanson536 2 ปีที่แล้ว +2

      American here. I am impressed at how India has produced so many outstanding mathematicians. Ramanujan must be smiling as he looks down on that long legacy. Jai Hind!

    • @rajeshsharmajaipur
      @rajeshsharmajaipur 2 ปีที่แล้ว

      @@jameshanson536 Thank you too, your country USA is also great Nation so much contributed in education, science and technology...

  • @Q_20
    @Q_20 9 ปีที่แล้ว +7

    Math is so beautiful that knowing its true beauty would cause stack overflow on the Universe and to terminate.

  • @Goldslate73
    @Goldslate73 2 ปีที่แล้ว +1

    That's the thing I love about mathematics... Even the simplest of things can blow your mind away like anything. Cheers!

  • @naftalyelmescany3179
    @naftalyelmescany3179 5 ปีที่แล้ว +1

    Thank you for exist ted-ed.

  • @danki2000daniel
    @danki2000daniel 9 ปีที่แล้ว +7

    mind blown! I love math!! just wish I was better at it

  • @danxfabsab9331
    @danxfabsab9331 5 ปีที่แล้ว +3

    back when the world was boring and when people gets bored they invented math!

  • @BigHZ
    @BigHZ 2 ปีที่แล้ว

    This is the most comfortable maths video i have ever seen in life

  • @Welivecurious
    @Welivecurious 3 ปีที่แล้ว +2

    अद्भुत ! सभी पेरेंट्स को देखना चाहिए यह वीडियो और अपने बच्चों से इस बारे मैं बात करनी चाहिए। मैथ क्यूरोसिटी के बहुत जगह है घर पर होने वाली बातचीत मैं Homeschoolers मैं Math Curiosity पैदा करने के लिए हम भी प्राइमरी के बच्चों के साथ काम और कोशिशें कर रहे हैं

  • @lake4461
    @lake4461 8 ปีที่แล้ว +142

    it's everyone's triangle okay geez

    • @typo691
      @typo691 6 ปีที่แล้ว +34

      **Our triangle** (cue USSR anthem)

    • @KanishkMalkan
      @KanishkMalkan 5 ปีที่แล้ว +3

      Hahaha 😂 😂 😂

    • @WillG_MTB
      @WillG_MTB 5 ปีที่แล้ว +1

      @Think Is Awesome no

    • @sohamshah5572
      @sohamshah5572 3 ปีที่แล้ว

      This has 121 likes, imma keep it that way

  • @Finalounet
    @Finalounet 9 ปีที่แล้ว +87

    Math is love, math is life

  • @AmazingGriffin
    @AmazingGriffin 9 ปีที่แล้ว +1

    Was studying this last year (year 10) at school, (I took my statistics GCSE a year early), didn't quite understand it at the time but it makes a lot more sense now. Thanks!

  • @user-gk9ui5kh5g
    @user-gk9ui5kh5g 8 ปีที่แล้ว

    I understood alot of knowledge in 5 mins ... I like it
    فهمت الكثير خلال فقط 5 دقائق عظيم !

  • @eljah
    @eljah 4 ปีที่แล้ว +7

    Every row is a multiple of 11!
    Row 1: 11
    Row 2: 121
    Row 3: 1331
    ...

    • @pakins.
      @pakins. 4 ปีที่แล้ว

      They pointed that out, in the form of the exponents of 11.

    • @deepakkumarshaw8958
      @deepakkumarshaw8958 4 ปีที่แล้ว +2

      no, it will work only till 4th row i.e (11)^4=14641
      when it comes to the 5th row.....(11)^5=161051
      but the elements of 5th row are 15101051

    • @rafikhan908
      @rafikhan908 4 ปีที่แล้ว +1

      You typed 11! which represents 11 factorial

    • @phuonghuynhanh9879
      @phuonghuynhanh9879 3 ปีที่แล้ว

      @@rafikhan908 lol

    • @official-obama
      @official-obama 3 ปีที่แล้ว

      @@deepakkumarshaw8958 that’s because it has more than 1 digit numbers
      When you do the multiplication of the powers of ten thing you get the correct answer

  • @fighter4510
    @fighter4510 2 ปีที่แล้ว +3

    0:16 Why you don't mention the year in which Pingala discovered it..Don't be too smart...Let everyone know that it was discovered by Bharat (India)

  • @ranjankumarsahu998
    @ranjankumarsahu998 2 ปีที่แล้ว

    This might be one of the most enlightening videos of Teded

  • @ThiNguyen-il9im
    @ThiNguyen-il9im 7 ปีที่แล้ว +1

    OMG, so amazing that Pascal's Triangle has such wonderful uses !!!

  • @gavinmann4152
    @gavinmann4152 4 ปีที่แล้ว +3

    2:53, and the next row would be how many you spheres you would need to make a 4D triangle

  • @SKyrim190
    @SKyrim190 7 ปีที่แล้ว +11

    The property with eleven is kind of redundant. That is just taking the expansion of (x+y)^n and replacing for x = 10 and y = 1

    • @havefundontbeboring2822
      @havefundontbeboring2822 7 ปีที่แล้ว

      preach

    • @azraelle6232
      @azraelle6232 7 ปีที่แล้ว +1

      It's a different way of visualizing the information. Some people find it easier to think in terms of 11's multiples, other find polynomials easier. Tomato, (2t+2o+m+a).

    • @Cohnan13
      @Cohnan13 7 ปีที่แล้ว +2

      Everything in it is redundant, in the sense that you can link it all to a the definition. Now, what a particular person might believe is obvious given other patterns is what may vary depending of your understanding of the concepts

  • @grabern
    @grabern 6 ปีที่แล้ว +2

    My favourite part of Pascal's Triangle is that if you got to the (2^n) + 1th row and divide all the numbers excluding the ones by 2^n, then turn them into top-heavy fractions, the denominator will spell out a 121, 1214121, 121412181214121... pattern. For example, on the ninth row you will get 8/8, 28/8, 56/8, 70/8, 56/8, 28/8, and finally 8/8. When simplified, this becomes 1/1, 7/2, 7/1, 35/4, 7/1, 7/2, 1/1. Check it out if you don't believe me.

  • @vampirevideos3460
    @vampirevideos3460 4 ปีที่แล้ว +2

    Ted: “what might we find next? Well, that’s up to you”
    My brain: oh great here we go again

  • @gamegirl8722
    @gamegirl8722 7 ปีที่แล้ว +5

    Video: known as the Sierpinski Triangle
    Me: Also known as what happens when the Triforce takes over.

  • @harikalatheeswaran9206
    @harikalatheeswaran9206 5 ปีที่แล้ว +5

    Amazing video 👌^999!
    Awe struck by watching the secrets of Pascal's triangle.
    Thank you so much for enlightening us with such an awesome video.
    Blown away by the way how one can generate the triangle fractal from Pascal's triangle 🤯!
    Thank you once again 😊!

  • @rogersledz6793
    @rogersledz6793 2 ปีที่แล้ว +1

    Thank you so much for uploading this video. It is helping me get through the pandemic!

  • @mli3793
    @mli3793 7 ปีที่แล้ว +2

    I love these episodes! Keep up the good work!

  • @wheresmypen4644
    @wheresmypen4644 4 ปีที่แล้ว +1

    Now I wish ted was my maths teacher in school

  • @theGrabix
    @theGrabix 9 ปีที่แล้ว

    for given n:
    if you sum "(n-k over k)" for k from 0 to k ... as long as this k

  • @halfcolombian72
    @halfcolombian72 8 ปีที่แล้ว +8

    0:21 "in China it's John Wayne's triangle"

  • @hungvan6771
    @hungvan6771 5 ปีที่แล้ว +3

    Still Watching it in 2019

  • @holyshit922
    @holyshit922 ปีที่แล้ว +1

    If you delete the last term ad create system of linear equations where in RHS are numbers of rows
    you should get Bernoulli numbers with +1/2 as B_{1}
    From Pascal's triangle we can get Fibonacci numbers

  • @Meow_yj
    @Meow_yj 3 ปีที่แล้ว +1

    I didn't knew it had so many interpretations !Thank you.

  • @yellowtinted
    @yellowtinted 8 ปีที่แล้ว +37

    Reminds me of Vihart lol

    • @TheRedstoneTaco
      @TheRedstoneTaco 8 ปีที่แล้ว +5

      A vihart fan! Whats up!

    • @yellowtinted
      @yellowtinted 8 ปีที่แล้ว +3

      Ey there :)

    • @yovliporat8608
      @yovliporat8608 7 ปีที่แล้ว +2

      triangle triangle triangle

    • @TheRedstoneTaco
      @TheRedstoneTaco 7 ปีที่แล้ว +1

      3 triangles and 3 sides to a triangle 3 times three is 9 and there were two 3s so 9 to the negative 2 power equals 1. a is equal to 1 if we are talking about the numerical alphabet codex and you have a one in your name. assuming that we are talking about the number 1, 2, and 3, we could say we are starting the fibbonacci sequance and the second non one number in it is 3. three minus 1 is 2. 2 equals be in the numerical alphabet. b is the first letter in bee movie.
      BEE MOVIE CONFIRMED :P

    • @LyricNear
      @LyricNear 7 ปีที่แล้ว

      Snake, snake, snake, snake, snake, snake, snake, snake!

  • @damianskrok1731
    @damianskrok1731 8 ปีที่แล้ว +5

    I shall show this video to everyone who says math is boring

    • @Hazaroth
      @Hazaroth 5 ปีที่แล้ว

      I love math but people who say maths is boring will likely find this video boring as well

  • @mikealdaccache8256
    @mikealdaccache8256 4 ปีที่แล้ว +2

    I use the pascal's triangle in EPR spectrums, when I have the same coupling and S=1/2, I can predict the relative intersity using it.

  • @sheulidas7227
    @sheulidas7227 4 ปีที่แล้ว +2

    The Pascal's triangle really helped a lot to improve in mathematics !

  • @YuriDokiDoki
    @YuriDokiDoki 5 ปีที่แล้ว +4

    4:05 I learned that in math class

  • @direidino8917
    @direidino8917 8 ปีที่แล้ว +12

    In Italian we say "Triangolo di Tartaglia"

    • @tommeng6522
      @tommeng6522 5 ปีที่แล้ว +3

      In mexico,, we call Avogadros number "Guacamole"

    • @loremazzu408
      @loremazzu408 5 ปีที่แล้ว

      Che bello trovare anche qualche Italiano appassionato in matematica nei commenti

  • @avinashyadav8314
    @avinashyadav8314 4 ปีที่แล้ว

    This just rose my interest in Permutation combination, binomial theorem and probability, really a great work.

  • @sorry6726
    @sorry6726 5 ปีที่แล้ว +2

    I m not lying but i actually discovered this sequence independently. When i was trying to generate a universal formula for calculating compound interest for cracking a govt exam. I have already remembered it upto five terms. And i can calculate compound interest in fractions of a second now. Didn't knew it was so important other than that.

  • @Constellation-fg5tb
    @Constellation-fg5tb 5 ปีที่แล้ว +28

    What's funny is Pascal plagiarised the triangle from a Muslim mathematician.
    This is the case with early Western scientific "discoveries" whether they admit it or not.

    • @theregalproletariat
      @theregalproletariat 3 ปีที่แล้ว +1

      He didn't invent the triangle - but he did add a lot of useful information about it.
      Everyome who played a part in this triangle needs to be credited with it on his level, yes - but I wouldn't say he plagarised it.

    • @omarherp1131
      @omarherp1131 3 ปีที่แล้ว +1

      What's the name of this mathematician

    • @KakashiHatake-sw2sy
      @KakashiHatake-sw2sy 3 ปีที่แล้ว

      wrong.

    • @fredgarvin4482
      @fredgarvin4482 3 ปีที่แล้ว

      Not funny at all. Only a complete moron would find humor in this.
      That would be like saying it is funny that the rest of the world plagiarized many things that the western world came up with first. Why is that "funny"?

    • @afj810
      @afj810 2 ปีที่แล้ว

      @@fredgarvin4482 it's a figure of speech. Treat it as having the same meaning as "strange" in this context.

  • @salmonsushi47
    @salmonsushi47 2 ปีที่แล้ว +3

    You guys didn't mentioned Fibonacci number!!!

  • @SplittingProductions
    @SplittingProductions 2 ปีที่แล้ว +1

    "What might we find next? Well, that's up to you."
    That was the only part of the video I understood so I find that unlikely.

  • @MP-cv6if
    @MP-cv6if 5 ปีที่แล้ว +1

    7 videos from you and my brain is on the verge of exploding

  • @scaltheceiling
    @scaltheceiling 9 ปีที่แล้ว +12

    oh look my triangle!:3

  • @bornjusticerule5764
    @bornjusticerule5764 8 ปีที่แล้ว +3

    God is the unfathomable supreme scientist & mathematician. God is the Unified Field.

  • @sonxuannguyen1207
    @sonxuannguyen1207 6 ปีที่แล้ว

    Wow, this is the first time i've ever seen the detailed and well-explained Pascal’s triangle topic, thanks u very much Ted-Ed

  • @alextrebek8293
    @alextrebek8293 5 ปีที่แล้ว

    i love math. some people see it as cold and rigid but i see it as something that shows order, thought and reason in the universe

  • @AshtonSnapp
    @AshtonSnapp 7 ปีที่แล้ว +3

    When you showed me Sierpenski's Triangle, I saw the Triforce from Zelda

  • @lostcat3131
    @lostcat3131 7 ปีที่แล้ว +3

    Pascal's triangle please notice me!!!

  • @alexwoods8927
    @alexwoods8927 6 หลายเดือนก่อน +1

    Well this helps me alot for Applied Stat I nice work

  • @cattidesjar4229
    @cattidesjar4229 7 ปีที่แล้ว +1

    this is so cool and I learned a lot!! Thanks, TEDed!!!

  • @theprimonemo
    @theprimonemo 7 ปีที่แล้ว +10

    Triforce

  • @mrowkamrowka8969
    @mrowkamrowka8969 5 ปีที่แล้ว +3

    I DONT now this triangle earlier and do it on a paper, then i watch this video. 😂
    I invented it to.

  • @rohitpol4963
    @rohitpol4963 2 ปีที่แล้ว +1

    Damn a small triangle is so mysterious and deep unbelievable !!!

  • @nicoleeeeeeeeebiebs
    @nicoleeeeeeeeebiebs 7 ปีที่แล้ว

    i knew about this triangle but had absolutely no idea that there were so many other applications! loved this video

  • @Moyimoyyyyyiiiiii
    @Moyimoyyyyyiiiiii ปีที่แล้ว +3

    Jai balayya Jai jai balayya🙏
    Jai balayya Jai jai balayya🙏🙏
    Jai balayya Jai jai balayya🙏🙏
    Jai balayya Jai jai balayya🙏🙏
    Jai balayya Jai jai balayya🙏🙏

  • @Moyimoyyyyyiiiiii
    @Moyimoyyyyyiiiiii ปีที่แล้ว +3

    Jai balayya Jai jai balayya🙏🙏
    Jai balayya Jai jai balayya🙏🙏
    Jai balayya Jai jai balayya🙏🙏
    Jai balayya Jai jai balayya🙏🙏