Introduction to Permutations (Ordered Selections)

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

Your enthusiasm is infectious

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

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!

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

Love that he knows betting

Why is this guy a genius? Respect big man.

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.

Can't be clearer than this.

My man.

Thank you never regretted watching your videos before test💪❤

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

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

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?

Excellent

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

Wow,the date on the whiteboard..my birthday

you my good sir. is a living example of why we need good teachers not just teachers.

Thanks a lot sensei <3

xavier

like if your from india

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

man what a dashing perssonality

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".

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

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

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

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

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

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. 😄👍

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

I LOVE YOU.
no homo

god bless me with your brain .

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

Greetings from India, sir. AMAZING VIDEO.

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

Thanks Eddie, I love yours math channels.

Amazing!

You are one of the greatest Mathematian

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

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

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!!!!!!

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

Thank you so much

An amazing professor like always

Thanks mate got an exam coming good revision!

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

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

As always a very helpful video! Thanks

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