Introduction to Permutations (Ordered Selections)

[@AnthonySpinelli-fe4vn]

I love how you give an example of the permutation formula before giving them the formula, so they build the intuition. Amazing teaching method.

[@sammyeatsham2882]

I love how this guy just teaches students with that emotion and good energy! Really Happy :)

[@theonlyguills]

I did 4 years of Bachelor of Science in Computer Science and I had a LOT of these math classes. This was the clearest, easiest to understand, and most well-taught class I have ever seen. Good job. This is master level.

[@danceunited1811]

I am from India and I thank u to give me conceptual idea about permutation.. Love from India 🤗🤗

[@bymagix8923]

I am from Germany and I am kinda triggered by SS as an abbreviation

[@ngl2935]

@@bymagix8923 what does ss mean? from my knowledge it is a paramilitary force under Adolf hitter's control

[@bymagix8923]

@@ngl2935 Started paramilitant, gone official. Not good.

[@LJdaentertainer]

You're a great teacher man

[@Amrutha-mq3wi]

I am a ninth grader. My school is teaching 11th-grade syllabi for JEE preparation, but I never really understand them. After my dad's suggestion, I started watching your videos and now I understand the theory of what is being taught in my school with a deep insight. Thank you so much for such a quality teaching. I don't know what was I going to do without any of your videos.

[@nwizg523]

Why is this guy a genius? Respect big man.

[@waffledragons]

your way to approaching things is more understandable for hsc students thank you tons sir

[@engineeringsuite2243]

@ooooooooooooooooooooooooooooooooooooooooooooooooo the book name is "Cambridge Mathematics 3rd Unit 2nd edition enhanced" 😁🙂

[@valentinalordies2951]

Greetings from Ukraine! Eddie, you are awesome teacher. I love math only because of YOU (such as I really hated it before discovering your chanel). Thank you a lot!!!!!!

[@abrarchowdhury9641]

hows the invasion lol

[@aishwaryalohi6366]

Thank you Eddie Woo for making this topic seem accessible. I genuinely laughed at the odds of picking the winning trifecta example!

[@Tesseract9630]

This guy is "the teacher". Seriously best teacher ever.

[@euniceesinam2573]

Your enthusiasm is infectious

[@eliaspagnani2827]

Straight baller, I hate math. You make math easy keep it up please im tryna farm some loot with this powerful knowledge

[@EasonTheG]

tysm eddie 😭 pls continue making excellent quality vids as this!

[@dreamclassics2507]

Thank you never regretted watching your videos before test💪❤

[@kidgamer4787]

the way he teaches is so understandable oh my god it is just crazily good

[@tubaa6542]

I can't believe I only found this nowwww.. but still this is so very clear, concise and coherent I think I will enjoy math from now on. 😄👍

[@TheTanmaybishnoi]

An amazing professor like always

[@shouryaprakash3227]

You are one of the greatest Mathematian

[@WalterObinga]

Watching the video 10 years later 😢

[@lurkin]

Thanks mate got an exam coming good revision!

[@person42069]

finally, another teacher who's acc good!

[@PoloJust]

man i swear if i had professors like him i wouldve actually paid attention in class

[@deathstar_22]

that one student scratching his head is definitely me not understanding a word of it.....

[@jamesdavid8822]

As always a very helpful video! Thanks

[@csabaszekely3098]

That is not a permutation, but variation! In a permutation you have to use all the elements of the sample space! Which is why it is very useful to model symmetries with permutations. N!/(R1!*R2!*...*Rn!) is the permutation with repetition and N! is the permutation without variation! What you are talking about under permutation is actually variation!

[@bosnianpy]

Beautiful teaching

[@shivamthaman7081]

i used to be scared of maths, This is really fun , everything now makes sense

[@abiyermias3037]

Thanks Eddie, I love yours math channels.

[@dsp6742]

Greetings from India, sir. AMAZING VIDEO.

[@karthikprabhu3173]

Wow reference to quantum wave function which is probabilistic where exact positions are unknown but has probability of it being there

[@justinbiebermalaysia1335]

Wow,the date on the whiteboard..my birthday

[@nwizg523]

Love that he knows betting

[@ishravlogs5382]

You are an amazing teacher. Your videos are amazing :)

[@Amitkumar-ox2gt]

i can't believe i actually understand every thing

[@LetsBeHuman]

6:27 - 6:31 - Why are you dividing it and not subtracting it? Could someone please explain?

[@GabTheAdventurer]

A thing that always help me is imagination... So, try to think like this (at least it worked for me): 10! = 10x9x8x7x6x5x4x3x2x1 6! = 6x5x4x3x2x1 So, if you write that as a fraction: 10x9x8x7x *6x5x4x3x2x1* ----------------------------------------- *6x5x4x3x2x1* When you look closely, you realize that the *bold* part repeats, and since it's all multiplications, you can cut them off... 10x9x8x7 *cut* ------------------------------------------ *cut* So, you end up with: 10x9x8x7 Exactly what Woo wrote in the board... Simple like that! Haha

[@LetsBeHuman]

@@GabTheAdventurer Thanks a ton

[@GabTheAdventurer]

@@LetsBeHuman You're welcome

[@tbarron1631]

If you want no repeats, isn't it 10 x 9 x 9 x 9? For the third digit, I just don't want to repeat the second. But I could pick the first and it wouldn't count as a "repeat".

[@nikoleo2000]

thought the guy was jumping in the miniature

[@yamunamohandas7403]

I am in 10 and I am able to understand this because of his simplicity

[@babitasharma8431]

Sir, Could you please explain the topic of colouring of a cube ( number of ways )

[@Lily-rr1xj]

Excellent

[@priyalkhurana9763]

Is the audio of this vid weird or my phone's speaker broke?

[@sunrevolver]

There are 4 number cards 3,5,0,2. How many ways this cards can be arrange if one card can only be used once?

[@gurqhan]

4!/(1!*1!*1!*1!)

[@itrstt66]

why do you divide instead of subtracting?

[@harrisonbennett7122]

Amazing!

[@soerenna]

Thanks a lot sensei

[@kal5211]

My man.

[@ManishKumar-rz9ub]

My teacher taught me this as npr 😂😂

[@alishax6336]

Thank you so much

[@mirkhan5001]

god bless me with your brain .

[@deepaksharma790]

Why do we have to multiply????¿??¿??¿???¿

[@rahmatazam3281]

Imagine if there are 5 ways to go to a place C from a place B(B-C = 5ways) and also I have 7 ways to go to place B from A (A-B= 7ways). Now in how many ways we can go from A to C ?........well the best approach is that if I go in just 1 way from A-B then I will have 5 ways to go to C hence there are 7ways to go from A-B, then I will have (in total) 5+5+5+5+5+5+5 ways which is 35 and that is why we do 5×7=35. Hope it helps!!!

[@deepaksharma790]

@@rahmatazam3281 thank you so much for replying but one question ahead : that u have written (in total) = 5+5+5+5+5+5+5 which is 35 how ????

[@rahmatazam3281]

@@deepaksharma790 add 5, 7 times you get 35; 5+5+5+5+5+5+5 = 35

[@deepaksharma790]

@@rahmatazam3281 ok now I got it thank you 🙏😇

[@jonathanngai5956]

Can't be clearer than this.

[@Matthew-uk4qm]

im fucked for trials hehe xd cant wait for mystery mark :))))))))))))))))))))))))))))))

[@karthikprabhu3173]

Great teaching sir But I think the answer for permutations for 4 digit pin is 9 * 10*10*10 Because the first slot or the thousandth place has only 9 choices with zero excluded because if it starts with zero it will not be a 4 digit number Thank you for the teaching Helped a lot I had lost my intuitive understanding of some topics hadn't revised those parts for a long time From india

[@PrashantSingh-il6uc]

Karthik Prabhu A four digit pin is not equivalent to a four digit number. One can have a four digit pin starting from zero.

[@ambitionunleashed01]

can you pls teach our staff how to teach like you in our country🚶‍♂️ from India

[@DataPulse]

Born teacher

[@thescientificmethod4951]

I LOVE YOU. no homo

[@hafizarslanamjad4442]

Why did he divide by 6! and not subtract 6!

[@willwicky9052]

xavier like if your from india