Proof: Permutation Theorem - Permutation Formula Derivation

Proof of Permutation Theorem - Learn Permutation Formula Derivation. This video will guide will guide you step by step in getting the proof this formula. In this previous lecture we had learnt the introduction to permutations in math, now based on that concept we are learning Permutations theorem here and we learn Permutations Formula Derivation, which is -
P(n,r) = n!/(n-r)!, here n = total number items present & r = items taken at a time.
In permutation item represent any things that is to be arranged, may be letter, words, digits, number etc.
This Permutation is very useful in solving different types of question related to permutations mathematics.
I believe this Combination and Permutation tutorial was helpful for you.

For complete Lectures on Permutation & Combinations Please Click -

If you have any doubt or question to ask about above video lesson about solving factorials then please feel free to ask in comment section below.

Please feel free to comment and suggest us !

[abc]

There is an error in the beginning: (n - r - 1) should be (n - r + 1) as shown later on in the video.

[apocalypticbean]

why do you multiply it? That's a cruicial point you missed

[minionminion]

☺good bro keep it up I see u trying to talk like a foriegner🤣pls speak as u r

[dynamic_pointer_cast]

Wow. Whoever discovered this formula is a genius.

[Homemade]

Wow this is exactly what I needed. Explanation was clear and easy to understand. I subscribed

[lisagraifer]

Thank you!!! Love how excited you get at the end “oh my god, oh my god! XD

[hqs]

wait, is (n-r-1) or (n-r+1)? I think you made a mistake, if r=n then the last factor would be 1, which is correct, otherwise you double count. OOOps

[pouyaparsa]

This video was the best explanation I found for permutation concept, and I've been looking for a while! Great job, Really appreciate it !

[geekionizado]

Nice video, but you did not explain why you multiply 4*3*2*1. It could be 4^3^2^1 or 4+3+2+1, this is not obvious. I know the reason, but would be nice for you to explain... :)

[GLu-tbpb]

you sound like the indian guy from Ownage Pranks

[Nick-uidr]

Aur toh kuch nahin bhai par 1 tum bahut khatarnak style se likhtey ho. 😂 ...Suru mein toh mein chakkar kha gaya tha tumne 1 likha ki L ...yeh L kahan se aa gaya ki. 😃

Anyway nice proof ! 👍

[zaclanderos]

Man, thank you so much, I just entered college and this was so helpful

[jemappellelanoosh]

Wow you are REALLY good :D thank you so much this really helped

[mrscooby]

Hey buddy if you can't see than its not our problem.Get your eyes checked.

[stevencheung]

Your sir deserves huge praise!!! Love your enthusiasm in teaching!

[leugli]

I know I'm 11 years late but thank you so much omg
I'm learning probability theory and I can barely understand my textbook. This explanation made the permutation formula so clear

[deadphl]

This was so well presented. Thank you for posting!! Helped me a lot.

[derryalamsyah]

Thank you so much
Really help me

make me simple to understand :)

[rusty]

This is indeed the inductive proof of permutation theorem, although my expectations were different before clicking this video. Anywho, I still appreciate the content and your explanation. Have a good day.

[faithfulabah]

You're funny bro! This is so helpful!