How to tell the difference between permutation and combination
ฝัง
- เผยแพร่เมื่อ 8 ก.ค. 2024
- This is not my best video on this. I just remade it after I had enough people tell me to do so. Here is the link to a much longer version of this video with lots more examples and explanations!!!!! • Difference between Per... I do have two videos that go into permutation and combination separately and I spend time explaining them with simpler examples. This video should really be watched after those two. Im not sure why this one is so popular. Here is the combination vid • What is a combination and here is the permutation video • What is a permutation . How to tell the difference between a permutation and a combination. Here are several examples that will help you understand the difference.
If anyone is confused with the school board questions. The first one is combination because it said "3 people" which is to say ANY 3 from the 8 will do. The next one says "3 DIFFERENT responsibilities" which is to say it matters which 3 from the 8 gets which unique responsibility. Essentially for these problems pay attention to wording.
Thanks because I had combination. I really over looked the word different.
Thanks
💀💀💀gonna have to take some time getting used to these
The video was helpful , but your comment was more helpful than the video ❤thank u
Can I send you a question on it
Thank you!
My takeaway:
• Permutation:
- arrangement
- order matters, i.e., A, B ≠ B, A
• Combination:
- selection/choice
- order doesn't matter, ie, A, B = B, A
Glad it was useful! Thanks for the comment.
Who else is here one night before the examm
Good Luck
Too educational and the examples are understandable just goes in my mind this topic took my teachers 2 weeks to cover still can't get what my teachers thaught but ur 8 minutes videos just helped me out in the best way
so why is our locker code called locker COMBINATION and not locker PERMUTATION if the order matters? (this is what my math teacher said btw)
I will have to use that one. Thanks!!!!!!
jungkook i thought you graduated already? XD
Bangtan_Animegirl
Wrong sound
FooBar Maximus can you prove what you’re saying? sorry it’s just I’m a bit skeptical of what you’re saying
FooBar Maximus shit you’re a genius just blame it on your proffessor and scientists. Its always not your fault but its always someone else fault. What a genius.
Why these word problems are so easy while my teacher gives the most confusing ones. This is the only time i've predicted everything right 😂
Samedt HAHAHA ang hirap yawa may exam kame in 5 minutes zzzzz
😂😂
😂😂😂
Thank you for actually explaining how you do things and not just what to do. You are a God send.
Glad it was helpful
This Last 2 questions is the one I have been struggling with from my textbook but u have done justice to it, thanks man👌
I just had my Eureka moment! Thank you for this video!
Thank you so much! I was having a bit of trouble with recognizing a permutation vs a combination, and this video cleared that up nicely!!
Glad it helped!
Jesus Christ loves you
@@ben2808 i do too
This is the second video that I watched so far in two hours about permutation and combination. I like how this video focuses on the differences between the two which helped me understand it a bit better. The number of examples also was very helpful. Thank you
Jamie Toloa
Hey Jamie
@Daniel, Thank you so much!!! I figured it out, turns out that I didn't do 3.2.1 and ended up with 6 at the bottom, that's the only mistake I made. But I really appreciate your help!!! God Bless you!
Great Video 👍
Tip: Use "Universal Calculator"(formula mode) App to perform Permutation and Combination automatically, this helps to verify your answer, learn and understand quickly.
Download from Play Store : play.google.com/store/apps/details?id=com.shahalam7862020.calculator
@@intelilearning8341 I'm not
My kwo look ok l Ok I'll only usually,
Jesus Christ loves you
I will be regret if i dont watch this vid before answering my final exam..it helps A LOTTTT..likeeee it really make me understand the concepttr
This helped me a lot, thank you so much, you are doing a great job 👍
thank you SAL
i just randamly searched for difference i never thought that you would teach it because just before this video i had watched a video of yours at khan academy
iam happy with the coincincedence
i feel like you couldve explained why it would be a permutation or a combination better... im still confused
Will do some work on this when I get my equipment replaced. I see that this is a topic that needs several clarifying videos for.
When the "bucket" is unique, you never double count. When the "bucket" is not unique, you have to account for double counting.
Quick example. If A B C are receiving 2 x $5 dollar bills (bucket). You will end up with A and B , B and A, A and C , C and B. See how A and B is same as B and A since the $5 dollar bill isn't unique and you will need to remove this later. If A B C are receiving a 1 dollar bill and a 5 dollar bill you will end up with: A(1dollar) and B(5dollar), B(1dollar) and A(5dollar) in this scenario you don't have to worry about double counting.
@@swallow1106 what?? Omg
Basically the difference is that in a Permutation, the order matters. In the first example in the video, 3 people were to be chosen out of 10 for 3 UNIQUE prizes (the $20, $10, and $5 prizes). Meaning that the same person who wins the $20 could not also win the $10 or the $5 prize, the prizes are unique. This question could have been made into a Combination problem (where order does NOT matter) by asking how many ways can 3 people out of 10 be selected for the SAME VALUE of prizes (three $5 for example). It doesn’t matter if you win the first $5, or the second $5, or the third $5... you’re getting the same prize. Basically it’s about whether what you’re calculating the probability is for a unique thing or just multiples of the same thing. I hope that helps somewhat.
@@ck4786 thank you
Just the refresher I needed before my finals
Thanks for the video.You explained the difference quite well
This video was very helpful I now know the differences between the two
Thank you sir ! great tutorial . This examples are very helpful to understand . :)
Thank you so much it was so clear i had problem with identifying the permutation and combination
Finally!!! A video with my type of calculator
calculator app link please
So helpful. Thanks for throwing one with a twist!
You are so welcome!
My exam is today. This video explained the topic SO WELL. I'm finally looking forward to my exam.🎉
Thank you so much! This is SO helpful, you have no idea!
thankss !! next tomorrow is my biggest exam in my life and i know how to solve it in additional mathematics exam !! thank :))
Very helpful, thank you!
You really answer my nagging question which is different between knowing combination and permutation from the term of Selecting*...if the selection is termed Different then use Permutation and if rephrased as Same then apply Combination
I found it so helpful for my exams thanks
thank you!! An amazing explanation))
no longer confused ..good job sir
thanks a bunch
Thank you. You really helped me understand this topic very well.
Glad it was helpful!
Omg wish my math teacher had told me that earlier. Tysm!
Good Job. Thanks a lot.
thank you! Have a test tomorrow on a bunch is stuff on probability, this is the one thing that confused me on identifying them but much more clear now
1 year later.. how did it go
Great explanation.
Such a life-saving video!
Well thank you. It has been a strange video. I remade it from comments that I received, but it remains incredibly popular for some reason. Thanks for the comment and I am so glad I was able to help you.
That was really good video
wow this is great stuff.. thanks for sharing this.. love from indonesia
Thanks bro, it helped a lot
Thanx a lot... It really helped me...
this helps. thanks very much
Thanks
You clarified my confusions
Thanks. Needed this.
This video serves as a good revision of this topic.
Thanks a million!
Even though I study Math in Arabic this video helped me to differentiate between Choose and Pick.
Glad it was helpful! The video in the discription is my remake of this video. It goes into more depth
Thank you for the video! It helped 💗
3:14 I did the permutation so 🤔 I guess this one must be combination. I like how you knew that
Lifesaver 🔥🔥🔥
This is great thank you
helped a lot! thanks.
damn thank you so much, i understand within the first two mins .
your example is on point !
Thanks!
Thank you so much!!!
In some ques (not in ur videos) , its difficult to guess orders matters or not? then how would v know that its permutation que or combn que?
A tip:
If you're shortcutting anything in a tutorial or shorthanding something, make sure you explain why you took certain steps (purpose).
Great help to my basics ... Thank you so much :)
Happy to help!
All correct thank you 4 the help!
So helpful! Thank you!!!
your welcome
thanks so much it was helpful
I still didn't get why you divided it by 6. You mentioned that we may have counted twice, but what's exactly the 'twice' thing ? Even though I tried it one by one and scrolled through people's explanation, I'd still scratch my head.
in permutation/arrangement (20$,10$, 5$ example)order is important i.e it matters to whom we give the first second and third prizes. But the order is not important in combination/selection(same 5$ prize example). so when he took 10*9*8 , he has also counted 3! (or 6) additional possibilities i.e 1st 2nd and 3rd person getting the same 5$ prize . Lets say the prizes are A,B and C(permutation). these can be arranged 3! ways that is ABC,ACB,BAC,BCA,CAB and CBA. but if these are all the same prizes i.e AAA they can be arranged only 1 way(combination).
@@rahulraveendran7200 Yeah, so basically he counted the 1st,2nd and 3rd prize twice so he divided it by 3! as there are three prizes and the order does not matter as the prizes are same.
The answer is simple. 3*2*1 is 6 Dumbo
Thank you so much 💕
thank you so much!!
thank you sir!
you are super bro
Thank you very much!!
Thank you. You just made my day . Because I have test tomorrow.
😘😘
You're welcome. Glad I could help
Finally, got it!!😭👍🏼
In my country it's called a variation when K < N or K != N, and they only call it permutation when K = N. But I guess in America you just call the while thing permutation.
Thank you so much this really cleared my doubt
You're welcome
Is it (probabilistically) possible to do the last exercice if the question implied using permutations ?
If yes, how can we do it?
my final is literally tomorrow freaking BLESS this video just saved my life
lmao. How did the Exam go?
@@kishanmehta1102 she died
Thank you sir
great vid!!!!
جزاك الله خيرا ❤❤❤وشكرا جدا ع شرحك الذى لايوصف 😊
I hope God rewards me as well. Glad it was useful. God Bless.
Really good video, thanks
Your welcome. So glad I could help
Great video. Btw, what software are you using for writing?
UPSC SSC GURUKUL smart notebook
I have been trying to find something about permutations thank you so much.
glad I get help you. Sorry I am late replying
Thank you
Thank u so much.........'twas a great help
Dude you helped so much
Ro _ th-cam.com/video/fD-a_YFuYU0/w-d-xo.html
You can watch it animated regarding permutations
thank you for this video.
you're welcome.
Thanks good explanation.
Thanks
thank you!
tnx man , Great Help !
thanks
THANKS man!! you help me a lot! this is why I love youtube than my lame college,,, becuz youtube has much more understanding and better education then my college lmao
Your welcome. Glad I could help
Great job
you are the best
I wish. Maybe youtube would buy me cars. Lol. But thanks
Thank you! I’m trying to teach my students about this and it’s still hard for me to tell lol
One of the most difficult topics in math in my opinion
@@danielschaben thanks for relating lol its a relief for people
@@danielschaben This is harder than limits and derivatives
thank you
wow i understand so much
I understand ur video ,i hope i get good results for tmorrow exam
Guys the exam was a piece of cake ,thank God
good shit. best video i found
great video thank you!
You're welcome
The first example could be a bit cleaner, cause the way it was expressed I could apply either permutation or combination, depending on the understand;
In a group of 10 people, a $20, $10 and $5 prize will be given. How many ways can the prizes be distributed?
In case I assume these three prizes are going to be distributed in a draw/lottery way, I would apply on it a combination (10 choose 3), but if it was said the context as a race for example, so I would understand it as an ordering thus applying the permutation (10 permute 3).
I see that a race would make it clearer. In my mind I am seeing who gets each prize like a first second third. $20 is first, $10 is second, $5 is third. Actually when I made this video, I thought it would get 10 views a year.... not 1000s per day...... it is a strange video to be my most popular. I though my Permutation video and my combination video would be more popular. Both use cleaner examples with cleaner explanations.
awesome video sir!!!
keep it up.
akshay kurve u
thank you man unfortunately my professor likes to make up questions that are 50 x harder than this :(
I just had an Oooooh moment! Thanks so much!
You're welcome and thanks for the comment.
great sir
THANK YOU