Permutation formula | Probability and combinatorics | Probability and Statistics

Permutation formula | Probability and combinatorics | Probability and Statistics | Khan Academy

Рет қаралды 1,436,238

Күн бұрын

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Пікірлер: 363

@dylannolan7454 5 жыл бұрын

The way he works backwards towards the formula is why he is the best math teacher.

@19-gouthamkumarreddy58 4 жыл бұрын

Not only math yaar.,..

@coolguy7461 3 жыл бұрын

best? I don't think so

@apoleyash6852 3 жыл бұрын

Absolutely!

@faitodeyo7019 3 жыл бұрын

@@coolguy7461 it’s just a hyperbole

@alperkamu4842 Жыл бұрын

best? dickriding is insane bro...

@owencave7077 6 жыл бұрын

Just learned more from a 7 minute video than I would in an hour math class with my easily distracted football coach-teacher and annoying loud kids who can’t shut up

@mathsnerdmore7458 5 жыл бұрын

Owen Cave your my twin.

@ItsGosho 5 жыл бұрын

same

@lizhilin8738 4 жыл бұрын

Can’t agree more

@lizhilin8738 4 жыл бұрын

Same

@kaizen3876 4 жыл бұрын

I dont even listen in class , i come home and learn from this. Im way ahead of my class.

@shapi9861 4 жыл бұрын

I need this kind of teacher in class. I usually understand my own math teacher and even get 95 straight grades for the first 3 quarters but then I just don't seem to understand him when probability lesson came. I love math so much that it's such a big deal for me if I don't understand it

@ramensguy 3 жыл бұрын

I'm exactly in the same situation as you (-__-;)

@felixgeorge665 2 жыл бұрын

What is this the reunion of straight A student's or something

@bigdraco7967 Жыл бұрын

@@felixgeorge665 lol

@ionloghin2172 4 жыл бұрын

I swear to god, if this was shown in schools on the projector, I honestly think being a math teacher will no longer be a job.

@omerozdemir1395 4 жыл бұрын

LOL AAHAHAHAHAHAH

@PhantomAyz 4 жыл бұрын

Well every teacher has their own way of teaching which could either be better or worse

@blank2736 3 жыл бұрын

there are good teachers too lol not all math teachers are bad

@user-og9nl5mt1b 3 жыл бұрын

You want to replace eddie woo with this?

@BeastGamerNN Жыл бұрын

Totally wrong perspective

@ceyceydaaa 3 жыл бұрын

Hi, I'm writing from Turkey. Since I discovered Khan Academy, I listen your lessons at least 1 hour a day. There was one main reason at first: to develop my English level and learn some terms. But then I realized that you are telling the reasons of formulas. That's why I wanna thank you. You deserve more followers, everyone MUST know these teacher cause they're awesome!

@sevvalrich 10 ай бұрын

I'm from Turkey too, glad to see this comment 🥰 I'm studying for my university exam and I'm also improving my English :)

@ramonaraujo650 6 жыл бұрын

This guy is so good. Light bulb just turned on!!!

@TheTestedTutor 5 жыл бұрын

My tutoring role model, inspired me to start a channel.

@JoeBlo2 9 жыл бұрын

I had such difficulty conceptualizing the equation but this video summed it up perfectly and with ease. Thanks again!

@laurenking5581 5 жыл бұрын

You just took an 1hr 15m lecture and put it into 7.34 minutes. Thank you.

@pipe.smoking.modern.cat. 2 ай бұрын

7.34 min is equal to 7 min and 20.4 sec. The video is 7 min and 34 sec, not 7 min and 20.4 sec.

@zinebssakhi1764 2 жыл бұрын

what I like most about Khan's Vids, is that we don't need to memories formulas because we understand them and we discover the logic behind ... Thank you so much

@lokeshgoyal9419 Жыл бұрын

You expained in the way i want, as i also don't like to remember the formulas, but to remember the logic behind it, so that i can generate my formula for my own situations, whenever i need it. Great Thanks!

@DonNobyel 5 жыл бұрын

maybe person B like to sit in one chair only - Haha Dr. Sheldon Cooper, is that you?

@craighennessy3183 2 жыл бұрын

I have been trying to find a good explanation of the proof of the permutation formula and this is by far the best I have found.

@krissp8712 4 жыл бұрын

4:09 I liked how he explained how to stop the factorial, and even how to manipulate the factorial as (5-3)! -- that was really helpful! But then he kinda threw away that goodwill when he said to reason it out every time! You gotta learn these formulas for the binomial theorem, you can't just sit there in an exam trying to derive it from first principles every time! xD We're not always able to take our time :P

@MineCrafterCity 10 ай бұрын

You explained this 10x better than my teacher. He made it really complicated and confusing, but if you explain it like this it's way easier to understand.

@Jemmeh 6 жыл бұрын

This is so great and clear, thank you so much!

@tanmaychavan743 10 ай бұрын

Nothing on youtube have explained as best as this. ❤❤❤

@apoleyash6852 3 жыл бұрын

This really helped me a lot! I like how he explained the whole thing. I just subscribed to him after watching this video.

@anchalpandey9074 Жыл бұрын

this my first time watching your video and you're my maths crush now. I LOVE YOU. I have been learning permutations for so so long n also solved many questions but by sort of memorising the formulas but your explaination made it soooooooooooo easly n understandable like now i'd never need to memorise iy anymore. i can not ever forget it now. you made me love maths again. THANK U SO MUCH.

@Gayazz Жыл бұрын

Absolute king, makes it so much more easier to understand with the visualization instead of blindly following a formula

@rceby2024 6 ай бұрын

dude, my confusion is cleared for just a ahort period of time. THANK YOUUU!!

@IRenataI 3 жыл бұрын

Спасибо большое за объяснение, стало понятно!

@hazeldsouza9568 Жыл бұрын

My Lord! I've finally understood this concept thanks to you Khan sir! Wish we had YT when we were students!

@NudaLuna 8 жыл бұрын

I think I am officially in love with Sal Khan.

@yomamasofat413 8 жыл бұрын

+NudaLuna me too. This guy is a genius at teaching

@Risk1channel 6 жыл бұрын

NudaLuna 4th 😅

@zes7215 6 жыл бұрын

Max Tan no such thing as genius at tex or not or good or bad about it, cept u, teach/can teach any by any and any can be perfx. wrg, no such thing as interesx or not or more less, any can be any interesx etc.

@edwardliu9325 5 жыл бұрын

Seldom Pooper lmao ikr i couldn't make out anything he was typing

@madsbrdsgaard5315 7 жыл бұрын

Thank you! Really appreciate your lessons! :)

@sunnylefabulous6736 5 жыл бұрын

is it normal to be deeply in love with a youtube channel

@GloriaMaruchu 3 ай бұрын

this is the best explanation i have ever seen, i have been memorizing the formula without understanding the logic behind until today. Thank you.

@gracevelasco2167 6 жыл бұрын

Thanks for the help! my test is tomorrow and this really helped alot

@shriyapandeymishra1898 4 жыл бұрын

Khan academy is simply magical.....so very helpful!!

@sozhhsoshsbsbzohziahabaihs4931 Жыл бұрын

Thank you. You have changed my life. Keep it up.

@headglitch4074 3 жыл бұрын

God given talent, Perfect interaction even when it's not physically I grabbed all the info possible........wow

@theVoid524 5 жыл бұрын

This helped me so much. Thank you

@petemitchell1403 4 ай бұрын

6 years ago, I came across this gold when i was finding permutations combinations and probability hard to understand. Now I came across this video again for my Probabilty course in university too. Still the best video on the topic. Reminder of a beautiful time gone now😔As Tony Stark said,°Dead for centuries and still taking me back to school°

@druebio851 2 жыл бұрын

Thank you for this, gonna have this lesson tomorrow and I just realized that I can look at the question and just use my head instead of some complicated formula.

@menzimgazi629 7 жыл бұрын

u nailed it this will help me in second semester

@Epeueierhieej 4 жыл бұрын

im going into 6th grade and i never understood permutations and never heard of it. Second time trying to learn this and i got it in 7.34 minutes. ur amazing sal

@paytonclark7501 6 жыл бұрын

“Seaten” I’m dead 😂😂

@doktah5571 5 жыл бұрын

i love you Khan-sensei!!

@Giankurl 6 ай бұрын

This is a very helpful guide on how to understand the formula of permutation, thank you so much!

@Random13Guy Ай бұрын

Khan Academy never fails to provide a clear-cut concept. Thank you for this gem.

@luzilletoledo6478 5 жыл бұрын

I learned a lot.. Thank you very much for the help..

@JMSobrevilla 8 жыл бұрын

I looove u so so much. My math teacher is full of formulas and rarely rarely visualizes it. Oh well that's part of life

@hossamhamam2900 5 жыл бұрын

^_^ and mine too the same

@shapi9861 4 жыл бұрын

Same, I never understand the whole probability lesson because my math teacher never visualize or differentiate combination and permutation

@GallantryX Жыл бұрын

That's the best explanation of the Permutation formula, also explained it backwards, what a great video

@user-gp2sf7kx2g 6 ай бұрын

Thank you Khan academy for making this educational video. I now know how to solve permutation problems.

@gasserhegazy1267 Жыл бұрын

thank you so much, I didn't understand it in class but this is gold.

@yerisat9342 6 жыл бұрын

Khan is doing wonders for people trying to learn basic math concepts! I would have never really understood the idea behind the formula had he not "reasoned" it through! thanks Khan

@boody_tube Жыл бұрын

Man ur way of explaining, ur accent and ur voice is so amazing

@no_name_magician 5 жыл бұрын

Thanks for the concept. I also like to visualize things but there are some obstacles, due to which i am forced to memorize things and i hate memorizing, i am really bad at it.

@TuaGoated Жыл бұрын

Definitely not procrastinating and cramming rn. Great video

@laurengrondman Жыл бұрын

Super helpful! Thank you

@dennisachesa3358 10 ай бұрын

U made me comprehend whatever looked so difficult in my math's teacher lesson,thanks l can now sit to my exam comfortably

@remotestuff8721 3 жыл бұрын

This channel saved me a lot in my studies

@1975coucou Жыл бұрын

great video! tysm!

@ziziphobusakwe1704 3 жыл бұрын

You're literally the best!!!

@adengoher4343 3 жыл бұрын

Thank you for this video!

@brooklynusa670 20 күн бұрын

Thank you for clear articulation❤

@MrGiuse72 10 ай бұрын

BEST EXPLAINATION !!

@victoraul1 8 жыл бұрын

Gracias!

@muhtesemzehrad1382 5 жыл бұрын

I'm from turkey and im watching ur videos 😃

@puneetsingh6148 3 жыл бұрын

Amazing! Concept cleared

@PrasannaKumar-zx7gr 6 жыл бұрын

thank you .what I hope you you told and impresed me...keep on uploading more and more logical videos..my teacher always told me to mugup the formula.

@Sara-oy6ly Жыл бұрын

Thank u 💓really helpful

@gougniadam3135 6 жыл бұрын

Well explaining . Go on

@helenajarvis8100 4 жыл бұрын

This is amazing!

@abchannel3347 3 жыл бұрын

What a good teacher !

@Mahabalu669 3 жыл бұрын

thank you so much, you explained it so well. i understand how to do permutations now. :D

@nimrahenna 3 ай бұрын

Pure Gold 🥇

@DaudaJalloh-ir5bv 5 ай бұрын

Absolutely amazing

@delightedshow7938 2 жыл бұрын

Thanks a lot for such short & crisp explanation Love from Pakistan

@MI-49 3 жыл бұрын

best way of explaining things...excellent

@Fernandosilva-qq7ki 6 жыл бұрын

Very helpful thank you

@Lokkii59883 4 жыл бұрын

Wow thanks for helping me for my math test!

@lindsayerickson6690 6 жыл бұрын

Thank you for this.

@Professorbubblegum 4 ай бұрын

thank you sooo much

@mohammadfallah4876 5 жыл бұрын

awesome , i loved it , thank you

@VishalPawar-ff8oi 4 жыл бұрын

Ty for the video

@gudluckmark9588 6 жыл бұрын

i wish you could come & teach in My University.You are great!!

@X-yk8xy 2 ай бұрын

Thank you ❤

@sadiaafrin666 5 жыл бұрын

Love it! 💚 From Bangladesh

@qalanjo1989 Жыл бұрын

awesome, you are an amazing teacher!

@joe_matt 5 жыл бұрын

What a Legend!

@SathvickSatish 7 жыл бұрын

Thank you Sal!

@andrews.3465 6 жыл бұрын

Thank you. I had a hard time understanding permutations

@luisseisabelb.torion6186 3 жыл бұрын

i just cant concentrate. his voice is so good and mesmerizing

@rafaellebante3182 6 жыл бұрын

Thanks!

@cleopatramak Жыл бұрын

Thank you for explaining so well

@TrendyGent 2 жыл бұрын

THANK YOU.. This worked for me. It helped me understand.

@abdullahmaqsood2672 2 жыл бұрын

Awesome!

@user-gp8fr1nd3w 4 жыл бұрын

THANK YOU THANK YOU THANK YOU.

@afrins650 Жыл бұрын

Cery helpful to understand how the formula came into being, the logic. This ll hrlp students to remember understanding the reasoning instead of memorizing..

@karahoo8513 5 ай бұрын

i love this man

@asura-2467 2 жыл бұрын

I wish i had u as as my math teacher back in my school days

@jeffreydwightryanriley8308 Жыл бұрын

I see you're using the absolute value.

@richardadamwais9734 3 жыл бұрын

thanks your explaination it is such get chance during difficult time of covid pandemic

@adilmuhammad6078 3 жыл бұрын

Thank you very much 🙏

@user-nn4ho2ru1s 6 ай бұрын

thank you

@dixiemerchant1052 2 жыл бұрын

That was really good (better than my class video!)

@iloveblackpink3106 2 жыл бұрын

thank you for this 😭💓

@iconbylvergara6188 7 жыл бұрын

I also don't like formulas. This is the best! TY

@i_am_gods_child 3 жыл бұрын

i got so scared when he quickly went 'so this mean the formula' but then *phew* when he said he thinks its better to go through it by logic. thankyou so much for the videooo!!!!!