Permutations: how do we account for repetitions?

[philipalexopoulos]

This guy is the greatest math teacher on earth

[rivertells]

I am 44 years old and this is the first time I've understood how to work on problems if there are repeating letters

[peterdeng]

Such a brilliant lecture! Now I am more confident about the exam tomorrow. Big thanks for you, Eddie Woo!!

[hullgatt]

Omg, the relationships are totally blowing my mind. I am rediscovering math with Eddie Woo as my guide and I can see the path so much clearer now. Thank you-WOO! :D

[hunglyo.]

Loving how confident and vibe when he taught his student. Also, his lecture is really logical and detailed though you felt like you got caught up in the his story,

[varunnagp]

another great lesson, especially the way you explained over counting when there is repetition

[trackmyactivity]

You are great! Really catch the attention and make it interesting.

[raymondzhu]

thanks so much sir! really hate this topic but you've made it just that wee bit better :)

[benjaminarya]

Thank you Eddie! You are the best teacher on YouTube

[negoitamihai]

In an attempt to explain the last part as I was a bit confused too because haven't touched the binomial theorem before permutations/ arrangements. Look up (a+b)^6, that is the equation the KKKLLL(aaabbb) "name" relates to. There is an part of the result of the equation that gives a^3b^3, meaning aaabbb(KKKLLL), where 6 choose 3 "b"'s, where the amount of "b"'s tell us how many items to choose from the lot or 6 permute 6 of the lot gives us 20, the coefficient of the part of the result, and there is the corelation. I haven't looked too much up about this, this is the best I could come up with so I hope it's enough. 😁 You should watch the beggining of his Binomial Theorem playlist atleast for more insight.

[mehtubbhai]

One of the best maths teachers on yt. Thanks EW!

[Anonymous-oxgd]

Excellent explanation, got it crystal clear in my mind now

[maserekashepherd]

Kelly might never forget anything from this lesson like me

[rakshitsingh]

I am not a maths master and he is awesome and I know that out there they use calculators for calculation which is good but i just wanted to tell that if u asked what's 5! Or 6! Like that in India or even 720 /4 u will be judged as a teacher. I don't say he is bad a teacher good at concepts is far better than a teacher just knowing everything himself or just knowing the numbers... I repeat this teacher is great

[donjour]

3:34
Me nodding yes enthusiastically🤓

[paulcarello]

Picking up from, 6!/[3!(6-3)!] = 6C3. While mathematically correct, the equality is perhaps a little misleading. That being said, 6!/[3!(6-3)!] = 20, which implies that there are 20 distinct permutation of the letters KKKLLL (if we select 6 letters). If we now select 6 letters from the 6 letters (KKKLLL) we will have 6C6 = 1 combination. So, my point is, do not confuse permutations with combinations.

[shubhamsingh]

Sir you are grt
U cleared my doubt
Thank you sir

[subodh]

Sir you're the most handsome maths teachers I've ever seen and you're the best maths teacher also.

[joelg.dampiljr.]

I never knew that binomial distribution gives a hint about the probability

[survivor_]

I love you man pls marry my math teacher so I can have u teach us❤