Permutations and Combinations Tutorial

[@TheOrganicChemistryTutor]

Final Exams and Video Playlists: www.video-tutor.net/ Full-Length Videos & Worksheets: www.patreon.com/MathScienceTutor/collections Next Video: kzbin.info/www/bejne/i4C1q6ejjKyMbLM

[@hilyanehoya9711]

But us we did permutations with and without repetitions Why am i only seeing without repetitions

[@alfredbconteh]

Deeply explain the concept and also simple and easy to understand

[@RollandBemu-hu2ms]

Dear Teacher, I need help with a question. Can I ask you? Please.

[@mukhtarabdulrazaq2879]

17:40

[@vanpeng9917]

This man just taught me permutations and combinations in 7 minutes when my teacher couldn't do it for an hour.

[@joshr.5199]

I would like this comment, but I see it is at 69. Nice.

[@iyah1050]

@@joshr.5199 it's now 169

[@weyden7590]

@@iyah1050 it's now 174...but i added a like.

[@karthikeyang2037]

@@weyden7590 176

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@@karthikeyang2037 its 177 now lmaooo let's stop😂

[@Fahimsy3d]

This legend right here has been saving my life since 11th grade, and now I am going into my third year of aerospace engineering and still still following through his videos. Sometimes I wish more of my tuition went to Organic Chemistry Tutor than my professors.

[@namanjain3542]

you can donate him

[@peppathedemonslayer5338]

I'm in grade 9 when I learn this in school, this is not fair

[@hookey24]

This is not permutation, but variation vs combination. He did not say anything about permutations!

[@Quintessential.96]

​@@hookey24 🤦🧐

[@aditinarayanan]

@@hookey24 you *may* just *may* wanna look at the title again... 😶

[@benjamin_dinnerbone7128]

2 hours before a test and i always find myself here

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[@womav8803]

Same

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Me right now lol

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Day before 🤣🤣

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@@lilactiktok zero o'clock

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As a 40yo+ self employed quantitative analyst I always find myself here to stay sharp. Great work. Best channel on the tube

[@naadde]

I myself also come to videos like these just to repeat basics. In the end basics can't be mastered too well

[@hookey24]

This is not permutation, but variation vs combination. He did not say anything about permutations!

[@psyko9505]

Hey, Can you please tell me what topics should i study to become a quant?

[@andrewhooker7184]

This person is the reason I am passing my classes! Thank you for your easy-to-follow videos!

[@daniel5749]

"0 factorial does not equal 0, 0 factorial equals 1...if you're wondering why.... that's just the way it is. I don't have an answer for you." 10:52 Savage LOL

[@DariusGaugamela]

That was awesome LOL

[@prncess1848]

The reason why 0! Equals 1 is because when you do 0!= 1!/1! (One factorial over one factorial) it just cancels out to 1. It’s the same if you were to do 2!=3!/3!. When you expand the equation, You would cancel out the 3 on the bottom with the three on the top and be left with 2 times 1 which, of course, is 2!

[@dimitrijep7872]

@@prncess1848 u explained it right except that " 2!=3!/3! " should not have factorial in the denominator, thus it would look like " 2!=3!/3 " standard formula would be n! = (n+1)! / (n+1)

[@neeraj8278]

Just think, how many ways are there to arrange 0 objects, there's one way, just like that...

[@dylansanderson3663]

@@neeraj8278 exactly lol.

[@endzeitx]

I haven't been attending much classes throughout the years, this guy keep saving me for my exams. Much thanks

[@JT-od9hm]

“If you want to know why? That’s just the way it is.. I don’t have an answer for you” best part of the video by far

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Thanks! Your channel has been invaluable in helping my daughter with her homework!

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Yes!!!

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[@otaku_mcface9191]

I have my math test tomorrow and I accidentally fell asleep in the class where my teacher was explaining this and omg this helped so much thank you!!!!! You’ve saved my life for chemistry too! You’re awesome!!

[@Krazieninja01]

This video was posted in 2017... it is now 2020, and I keep coming back to this amazing channel for help with chemistry and now statistics. You are such a wonderful and knowledgeable guy! Thank you for sharing your knowledge and helping thousands of people!!!

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Now it's 2022...... Still wonderful

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Tutor(teacher) speaks with himself I go back home and watch your videos so I pretend that I understand his "teaching" style. You are a life saver

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Without you I probably would’ve failed my physics exam, so thank you for making these extremely helpful videos

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Who's here because you have a test tomorrow

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Lol tomorrow??? 2hours away

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Me😂

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Me

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Today.....

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Exam in 7 hours and I understand nothing at school... YOUR THE BEST TEACHER THAT I EVER KNOW !!! THANK YOU FOR MAKING MY LIFE EASIER

[@Random_Dude4486]

Same hahahaha

[@cj07722]

howd you do

[@bunyodsuvonov8009]

That's why I am watching. Mine is after 2 hours.

[@jamiesuka813]

I love how he explains the difference between permutation and combination. It took a me a couple example to finally grasp the advantage of using the formula provided. Not only it made bigger equations to solve but instead of drawing them out which could take longer. The recognition of the two different problems is also an important factor because you don't want to end up using the wrong formula Jamie Toloa

[@aa7352]

Same ! I didn't know the difference

[@elithluxe7568]

That's my issue. I understand everything and how to do it. But I don't understand how to know which one to use and to recognize the two types of problem

[@asarereuben7123]

Same here I’m now okay

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This man kno everything. It always his voice explaining any math problem. Im tryna nominate this man for a nobel piece prize.

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Your wording hurts my brain.

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i've been struggling really badly in CIE additional mathematics for the past few months, mainly because i wasn't getting the hang of a few chapters, this one included. my ex math tutor introduced this chapter to me quite a long time ago, and today is the day i REALLY understood the concept, which is astonishing. i've always hated this chapter, because it seemed so confusing and incomprehensible. i tried reading the text book, that has even worse explanations, i went to my older sister, still didn't understand; and today i finally decided to go and check on the internet. i still wasn't getting it from trying a few channels and then i bumped into this guy. and im SO thankful, cause i cant believe i understood a concept that i've been struggling to grasp for MONTHS in a matter of 17 freaking minutes. dear organic chemistry tutor, if you're reading this, i want you to know that you're a hero. you have no idea how much of an immense help you were to me today, and to millions others. not all heroes wear capes, sometimes they run a youtube channel to help others out. keep up this amazing work!!

[@hafeezahmed4023]

A wonderful voice and elegant way of explaining. I just like your voice and style of teaching. So nice.

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He's a singer

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You are 100% right, because I feel the same way best teaching with best voiceeeeee 👍

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Me tooo

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You reach everything with the most simple words I love you and I believe everyone does You are the only hope when I don't u understand a topic

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wow!!!! that's exactly how i feel... through out the semester I just believe and know I will understand more from this page!

[@miaazlan2412]

arrange=permutations 4:33 - calculating permutations 6:00 - calculating combinations 7:36 - sample questions + working

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scammer

[@miaazlan2412]

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Which channels I need a video for some topics he doesn't have e.g damped oscillation

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Khan Academy?

[@minhtuando6775]

Khan Academy is dusted by this guy. Really clear in explanation, no um, ah, um, um, f, f, etc.

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@@minhtuando6775 my Algebra 2 teacher says um ah um eh every 5 seconds. It's so fucking annoying.

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I just want to say THANK YOU , I been watching you since my algebra class and now I'm in statistics and I have to say the way you explain things, they are so more understanding and easier than the way the professors teach and I just have to say THANK YOU FROM THE BOTTOM OF MY HEART.

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Not all capes wear heroes...

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???

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Yep

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This is why I don't cram before my exams

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hahahha

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MindCap lol

[@amanuelbirhan9506]

It's funny when he says, "If you're wondering why...that's just the way it is."😂😂😂

[@Rafael_Dimla]

it eezz what it eezz

[@nivritipedaballi4252]

its kinda hard, because hes just saying the formula, but it would have been nice if he explained why it is that way and how he got there its better teaching

[@gustavlotz5415]

its because you can arrange the set { 0 } in 1 way

[@rydm0541]

okay so why is 0! = 1? 4! = 4 x 3 x 2 x 1 = 24 3! = 3 x 2 x 1 = 6. We divide 4 from 4!. 2! = 2 x 1 = 2. We divided 3 from 3!. 1! = 1, dividing 2 from 2! 0!???, divide 1 from 1!, its still one

[@johnlloydperez9755]

it's means don't ask anymore questions🤣

[@alenaj1579]

Honestly man, you saved me. I tried to understand this topic, but never could visualise the difference between permutations and combinations, now I got the difference thanks you to. Thank you so much!

[@animemysteries]

iruka sensei couldn't teach me this even with a whole week on just this subject, it was a drag. you taught me this in 10 minutes. you are now my new sensei, thank you

[@Zion122]

after seeing this comment, my faith in humanity has been restored once again

[@AsserRoblox]

​@@Zion122 my faith in humanity was lost reading it

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[@midnightstar3340]

was with you for chem last semester...now i'm with you for stats...GOAT

[@emx_kel]

This is the first explanation of permutations and combinations I've seen, that actually explains the difference between both!!! Thanks alot. this is a masterpiece

[@ZikoTheGreatest]

Same here

[@edmundappiah310]

This guy is the word GENIUS😂😂😂He just taught me permutations and Combinations in just 2mins

[@keananpather6957]

Bro people say Discrete math is hard until it finally clicks... you finally made it click for me. Thank you so much brother!!

[@juskonajak706]

I am in Africa, and MISSISSIPPI is a common question. I appreciate the dedication you put into this work!

[@infectiouslizzie]

You're saving my life in this Statistics class, thank you so so much for making these videos breaking down the steps and trying them out over and over. My brain needs this kind of teaching. Thank you!!!!!

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Okay, I just used this channel to learn my entire syllabus in one weekend... My teacher couldn't finish the syllabus in one year (the little he did teach no one grasps a thing so)... Thank you very much for all your hard work and time! You are the best!!!

[@cow9310]

Watching this 1 hour before my final exam

[@R.Senate]

7 years ago and still helpful. Thanks a lot!❤

[@chiviza]

I remember my calculus professor proved to us why 0! = 1 and it was mind blowing. Loved that professor.

[@tijaduno3417]

You are the real MVP. This just made my day having been struggling with the topic. U made it soo simple. I quickly had to share the video with my classmates.

[@grace_mango6182]

You have such a gift with teaching! Thank you for being willing to share it with the world via youtube!

[@mostafaelgayar]

I love how you explain these mathematical tricks in between, which are totally off-topic but so helpful. Thank you!

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Hi! I've been watching your videos since 2015 and I really have to thank you for getting me through Highschool. Just a year more, and I'll be a freshman in college. Time flies so fast! I also have to get back here and thank you when I'll be a doctor someday. I don't know if you'll be able to read this, but I hope you get the best of happiness and luck in life.

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I have been finding relevant videos to whatever I may be doing - from the beginning of middle school up until present day, being in the middle of college. You are amazing and continue to blow my mind. Thank you.

[@miniconico6831]

THANK YOU I JUST STUDIED A WHOLE MONTH OF CLASSES WITHIN TWO HOURS FOR MY EXAM 😭😭😭

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Y'all learn permutation and combination the whole month? Lol

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@@clarenskybenoit8755 bruh what

[@waelbadria9385]

Man, you are such a great teacher. I really appreciate your efforts.

[@cameroncornell7992]

Studying for the GMAT and needed a massive refresher on permutations and combinations. This has been insanely helpful

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so did you pass the gmat? if yes any tips?

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Dude...I'm 47 years old and have never grasped math the way I did watching your videos! Thank YOU!!

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I may be late to the party here but i seriously want to express my appreciation. It is insane to me how the exact same topic can seem either incredibly intimidating and hard or fairly simple depending on the explanation/person who explains. This is by far the best video on this topic. You sir saved my day.

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I watched a few of your videos and because you have helped me SO DAMN MUCH I definitely feel it's only fair to say THANK YOU and keep it up. I will forever be grateful, and will continue to turn to you for help.

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I can never fully understand a math concept unless I watch one of your videos

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u are a really great teacher , u made it so easy to understand, thanks for this

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Sir, I think you should get an award for how many students you have helped. Thank you for everything 🙏🏼

[@kyutelav8610]

My teacher didn’t even bother to teach me this, thank you for helping me out with my end of the year exam!!!!

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TY BRO

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Incredible video, thank you so much!

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photo everyday!!!

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Legend

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helloooo omj your the one with pics hellooo

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If you want some more practice, you might want to check out my latest upload, where I solve such exercises step-by-step: kzbin.info/www/bejne/qZq2lGqMest6acU :)

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Awesome Lesson!!! I was able to grasp the concept waaaayyy better from your way of explaining. Just great. Thank you Thank you Thank you!!!

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the way your brain works is incredible. you have gotten me through years of math and science

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And I've been stressing over this since the past 4 hours 😭😭 thank you math lords

[@murjer1]

You're an AWESOME teacher!! Thank you SO MUCH! I'm studying for the GRE and your videos are immensely helpful! Thanks again!!

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Where did he get 4 and 2

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i subed to u

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I just come to his videos to learn new things on my free time and listen to his soothing voice✨😄

[@Lexyvil]

This helps! Thank you. I'm struggling in Probability at my university, and I thought the "P" in nPr meant Probability, not Permutation. That explains a lot.

[@Solomon_Ayuba]

7 years later and this video is still saving lives. Thank you man!

[@Murphy877]

I love this man so much, he has taught me more things in 17 min than a 30 day course about geometry

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his voice is so soothing

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"If you're wondering why , that's just the way it is. I don't have an answer for you" 😂😂😂

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When he said he changed his mind not to end this video I just had to laugh I mean sir, you're not just a hero but you're funny too I mean

[@rma1563]

14:02 The fact you changed your mind and came back deserves some appreciation 😅. Thank you. Great explanation. It's 6 years old! ❤❤❤

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I haven't been in school in over 20 years! Had to help my high schooler w/ her homework, this video was SUPER simple and helped me greatly!! Thank you!!!

[@sorryillknow99]

10:51 If there's anyone wondering, I think I figured out why 0! is equal to 1 while watching the video. Basically, if n is like the menu of things you're choosing, and r is the amount of things you can choose from that menu. We can see in the question that n is 5, r is also 5, meaning you have to pick everything out of the menu and not leave anything out. Therefore, there's nothing to cancel out at the bottom to account for anything you can't pick. And having a look at the numbers that fill the spaces at the top left of the screen, I can understand it's the same as just dividing the full factorial by 1. (Please feel free to ask me about any part of my explanation if it was still confusing for you.)

[@AA-vb2ci]

This makes perfect sense! Thankyou so much!

[@INCENDIUSX]

I'm just happy they gave it outright and didn't ask us to go on a goose chase to find it

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Paying fees just to come and learn everything on KZbin 😂

[@jedidiahagozie4373]

5 years later and stil saving lives. Literally an hour my exams lol

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Thanks for the help. I was studying for a calculus exam and I haven't studied the content for a month up to the test. You're literally saving me on the day before the test.

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hey

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Fudge he taught it to me better than anyone could in the course of 2 weeks,he deserves the sub

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You are the key to our problem keep it bro. God bless u

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Can we recruit this guy as professor on youtube?

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thatd be dope lol

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Well he is a professor on KZbin lol

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he is already !

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Exams tomorrow lol Ty

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same tbh even tho we're not referencing the same point in history

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same

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My exam isn't tomorrow but near future

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lol its literally tomorrow

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we’re just starting this unit. i watched this video to get a head start lol so i can better understand my lesson 😂

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The only thing I would change about this channel is the volume. Like many of you, i'll probably owe my degree to this guy.

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I switched from incognito to regular window just to give it a thumbs up. I studied this topic around 14-15 years ago. I didn’t understand any of it other than memorizing and writing in the exam papers. Due to CWC 2023, I wanted to know how 10 teams playing each other once will have 45 matches in total. I don't want to blame my teachers. They tried their best. Either I was not paying attention or they didn't know that we didn't understand at that time. But kudos to you. Now it seems easy to understand.

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"wanna know why? I'm not telling you." lmao

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7:34 I literally jumped when thew add popped up because I was not expecting that, I was so focused😂

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He is amazing, I love the way he teaches and explains everything , he makes my topics so simple 😅🧠🧠🧠💪💪

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YOU explained in 15mins what i couldn't comprehend in a 3hr class ! Thank you ! keep being amazing !

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Not only did I understand the topic, but also I had seen new techniques. OMG thanks !!!!!! best teacher ever!

[@whoatemypickles4498]

Idk why I’m learning this😂... I don’t even know what this is but i get it somehow

[@ValeriaGalindo]

thank you so much for this video, you don´t know how much it helped me!

[@satoukazuma168]

The guy who decided that 0! Is equals to 1 probably doesn't give a shit LMAOOO Anyways, my deepest gratitude to you my sire

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Sometimes I trust you more than my teachers. You have been my teacher for four years. Chemistry was the first subject, which brought me under your teaching and then gradually I began to prefer you as my Maths’ and Physics’ tutor. 🙏🏻 One day I will invite you to one of my biggest stages of life.

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GREAT video!! Thank you!! Still a huge help 6 years later. Now THAT'S a legacy.

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1500 years later ppl still watching

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I learned a lot on KZbin rather than my teacher lol

[@spicyshizz2850]

11:00 its because there is only 1 way of 0 things... 0 things

[@AshiJain31]

Useful for me ..... started Probability but was stuck at this point now it's clear.... Thankyou

[@georgesadler7830]

MR. Organic Chemistry Tutor, thank you for a powerful video/lecture on Permutations and Combinations in basic Probability Theory. Word problems makes up the majority of Probability Theory.