Factorials shortcuts

Factorials are easy! This basic video lesson with show you the basics of factorials as well as some shortcuts in calculations involving factorials.
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[@EmperorDragon6]

I learned more from this short video than I learned from my teacher that has taken a week and a half to explain to the class.

[@MiniatureAnkit]

🤣🤣🤣🤣🤣 same 🤣🤣🤣

[@sadcowboysfan..]

That’s how it usually goes wit math LOL

[@bloody_dady00]

Me to

[@kelseygrahaam]

This video saved me so much frustration!! I'm taking an online stats class and the factorials were not fully explained, this has helped so much

[@emmalleedoublev7138]

not only was this video extremely helpful and informative, I wholeheartedly suggest the man voicing this create some guided meditations because your voice is so. comforting.

[@lovepeace9727]

idk why, but i understand math only when english speaking person's trying to teach me.
Hello and huge thnx from Russia, mate ^^

[@latachakraborty3000]

Quite funny but good to know

[@mohamedmusamustafa3324]

well obviously, youre not gonna learn anything if someone is speaking some other language

[@grandre3464]

@@mohamedmusamustafa3324 are you blind? He said he’s from Russia

[@mohamedmusamustafa3324]

@@grandre3464 he edited it

[@samyaza5752]

you're a hero. I was never taught this in any of my other classes and I just had an online statistics class introduce this to me for the first time ever. you made this look so easy and the video was short and to the point. thank you for taking the time to create this!

[@xjustdab]

Thank you so much! Just like 4 minutes of this video helped me learn factorials easily and I got 100/100 as a smartscore! I love the shortcuts too, I shared them with my teacher!!

[@IISkullzyII]

FOR THE FIRST TIME IN FOREVER YOU UPLOADED

[@soundaryahonaguntikar2443]

I love your channel because it's so simple and easy to understand ❤❤

[@ashishkumarsharma1323]

Your channel is the best! Love your videos 💕💕💕

[@struggle375]

i learned from this, thanks

[@laurasosa859]

awesome video, very simply put, thank you!

[@-_M-_]

Thank you so much I really appreciate this :D

[@KowboyUSA]

Love these videos.

[@KillerTacos54]

Thank you! That was so helpful!!

[@harrypotter-as72]

thanks for your correct

[@princechandravanshi4905]

Thank u sir for clearing my concept

[@nusrathfaiza4823]

Thanks for the video it helped a lot 👍

[@ajaii2223]

It reminds me what I forgot thanks a lot dude

[@aviroopdas5197]

Thank you very much sir...its helps me a lot and save my time

[@misnadevi8345]

Thank u so much for this vid.....it helped me..nd I undrstood these from here only😊

[@Varshini0912]

thank u very much tmrw i hv exam and u cleared it in just 1 vid

[@macanolli]

Mate, I wish I had you for a math teacher, all those years ago. Thank you

[@archanaharikishoresingh2076]

Thanks u cleared all my doubts

[@mariatourkakis1914]

well explained!

[@valariegrace81der85]

Best video I’ve found. Great explication

[@brilliantmindscholars57]

Great content Bro

[@Blacksun88marco]

How long till Factorials shortcuts (revolution)?

[@lifesimulator3964]

Blacksun88marco Actually, they already teach this at school. Nothing special

[@theislamophobicprophet5718]

Imagine using that on 70!/2! .... that 'shortcut' wouldn't be worthy at all.

[@tastylemon602]

@@theislamophobicprophet5718 then how r we supposed to do it ?? I don't want to use my hands to solve big factorials 😞

[@pickachu2168]

So example you have 5!/2!,you start from 5 then finish by 3 cause it’s 2x1 that is repeated which makes 1
Aka 5x4x3

[@harrypalmtree6143]

thank you for your help mate :)

[@isharak.g.r.u7290]

thank you so much

[@abhishekmather8453]

can anyone suggest me more amazing channel like this

[@raknos13]

blackpenredpen, Eddie Woo, Professor Leonard, Patrick JMT.

[@islamiyazindagi6178]

th-cam.com/video/qU5BPOnJOpQ/w-d-xo.html

[@anoniem012]

One word: PATRICKJMT

[@unknownuser7574]

Numberphile

[@billyzhao5641]

OK DO NOT CLICK ON THAT LINK ABOVE
Unless you wanna see some political stuff.

[@leosansamontina5961]

Thank You 😊

[@simoneoliver7379]

Thanks sm! I understand for my mock now.

[@saurabhrai8702]

He is really a BRANDED teacher I Swear.
I am not joking At All.
Thanks Sir

[@tecmath]

Branded? How so?

[@saurabhrai8702]

Cuz we could not find any other teacher whose teaching is like you

[@alphabetlivestreamrandomst5848]

THANK YOU! NEW SUBSCRIBER HERE!

[@lbmmovie6387]

Thanks sir for factorial

[@ramkrishnapoudel6011]

I learned it thanks

[@taitopotato]

UGH thank you so much

[@yuvrajade3124]

I understood sir thank u

[@stefanodimichele2726]

Nice one

[@talkingtal5369]

nice trick

[@WrenCubes]

1st and I LOVE you tecmath! Can so 15 sqrts in 1:30 thx to you

[@WrenCubes]

Btw, did you mean reuploaded not reloaded? 😀

[@himanshu_rwt]

Thanks sir❤️

[@ellajane8154]

Thank you😭

[@siddharthgager5883]

Thanks sir ❤👍

[@farxad5739]

Thanks

[@amitaparve84]

U r awesome thanks

[@g.mohith1115]

❤ from india 🇮🇳sir

[@PabloGarcia-pl8yy]

But what if we get 2 factorials above and 2 below?

[@ajaymaurya9301]

Thankyou

[@gnashkhan4828]

How to find of a long no without any divide in second

[@lirisa1869]

Is there a term for summing a series of numbers in a manner like factorial? Such as 7 + 6 + 5 + 4 + 3 + 2 + 1 = 28 I think the general formula for this would be n(n +1)/2 It seems like such a term could have a use a term like "7 summtorial" rather than use sigma .

[@candicefelice1042]

Excellent explanation of factorials 👌✨👍🏻🎉

[@ravikumar-sq3bh]

Thankew

[@taysiamassie5906]

THANK U

[@brilliantmindscholars57]

I like this..... It's really nice to see students appreciate our effort as tutors

[@isaakb4442]

For 12x11/2 you show it to be equal to 132/2 = 66. You are correct of course, but as it's easier to cancel the common factor of two first, it might have been instructive to some of the students to show that.

[@anas0502299]

Better than my teacher

[@allinoneboy444]

How can we find n! ?

[@bloonscraft1793]

I learn more here than school

[@nevinphilip1580]

Iam from India it is helpful

[@lifesajourney80]

Thank you!

[@vigneshnh7550]

Superrrrr 👌👌👌👌

[@bambiii787]

thanks man

[@outside_learner]

👀

[@bambiii787]

@@outside_learner what

[@outside_learner]

@@bambiii787 omg you replied
I gave that emoji without any reason ,only for fun 😀
Thank you 😊 for replying 👍💝

[@IbsterTech]

@@bambiii787 he likes you lmao...

[@outside_learner]

👀

[@varsain]

What grade do you learn this ?.....
Bcuz I'm in 6th grade and confused a bit cuz I gotta do 146!

[@kyanleong8014]

But that’s too big

[@krystinasaragos1535]

Are factorials in calculus or what? I don’t remember them in algebra. I just took two algebra classes so maybe in algebra 3?.

[@zaminshaikhh]

Precalc

[@avtarmandya5911]

good mathod

[@nuonuokund3952]

How about this 5(4!)?

[@amlanchakraborty5549]

It is clear to me now...

[@coys_dan735]

What about plain ones just like 20!. How could you figure that out quickly

[@codeWithHarsh01]

How can we find the factorial of 125?

[@kyanleong8014]

Too big

[@ericzhou1065]

Wait but how do you do single factorials like 12!

[@coolness4487]

12! is 12 x 11 x 10 x 9 x 8 and so on so it equals 479001600

[@CloudComputing]

How about using less comfy numbers like 80! / 10! * 190! ?

[@anoniem012]

HACIIIIIII THANKSSSSSSS

[@mattenmedia]

What if the bottom of the fraction is 6! times 7! ?

[@jesavhelledumalagan2016]

It would be 6!/7x6! Which is 1/7

[@trevtnk9999]

The questions such as 5! / 4! i read as FIVE divided by FOUR.

[@trevtnk9999]

@Gerald I know how to do it, but im saying in a text format when theres an ! youre supposed to add ENTHUSIAM!

[@trevtnk9999]

@Gerald lol

[@somayogi9122]

Thank you..

[@ashutoshbhure1600]

❤❤

[@vandanajaswal1407]

thanks

[@TheHarmeet0001]

Factorial calculator - pustudy.com/calculators/calc/math/Factorial_Calculator.html

[@edealexander3693]

How do you solve just 70! ?

[@liliacfury]

Thanks! My teacher SUCKS as teaching.

[@perumalsamyperumalsamy2438]

thanks 👌👌👌👌👌😊😊😊😊😊😊😊

[@nehalekbote5583]

Mr.Bean voice🔥

[@anxccc5310]

is factorial actually a real thing taught in school

[@dadrar1800]

Would you plz make ur some videos in Hindi plzzz???

[@wingman2h]

Ao if you put
100!
Ypur gonna count down to 1 and mutiply then all XD

[@AnkitVadiyatar]

Subscribers are 666K!
Illuminati exposed!!😂😂

[@mesa480az206]

11! over 5!6! im geting 462 what am i doing wrong ?

[@St._Jaden_P]

mesa480az206 Nothing. Its PEMDAS! He's going again the very rule. But if 66 is the correct answer, then we've all been lied to. lol

[@tharushagunaweera791]

✅✅✅👍👍👍

[@thenightmarem1319]

ma nigga

[@tonybarfridge4369]

I didn't get it until the very end

[@arkanon8661]

am i the only one who noticed:
1! = 1
2! = 2
3! = 6
6:21
6,2,1
3!,2!,1!

[@shifa_550]

I think i was knowing this...Do u soo ?!

[@goldeer7129]

Don't do (12×11) / 2 = 132/2 !
Instead cancel the 2 with the 12 (because 12 = 6×2)
(12×11) / 2 = 6×11 = 66
Easy, and you can cancel lots of stuff like that (it's really lacking for a video like that about factorials..).
Have a few ones :
7! / 5! · 2!
14! / 10! · 4!
20! / 17! · 3!
15! / 9! · 6!
They can ALL be done in your head... (check answers for hints and solutions)

[@goldeer7129]

Make sure to :
- Cancel a maximum
- Cancel smartly
- Know multiplication by 11, and maybe basic stuff for like 29x30
1. Easy, 7*6 / 2
Cancel '2' with '6' to get '3'
7*3 = 21
2. 14*13*12*11 / 4*3*2
Cancel '4*3' with '12', cancel '2' with '14' to get 7
7*13*11,
7*13 = 91,
91 * 11 = 1001
3. 20*19*18 / 3*2
Cancel '3*2' with '18' to get '3'
20*19*3 = (20*19) * 3 = 3980 * 3 = 3 * (4000 - 20) = 12,000 - 60 = 11940
4. 15*14*13*12*11*10 / 6*5*4*3*2
Cancel '5*3' with '15', Cancel '2' with '14' to get '7', Cancel '6*4 = 6*2*2' with '12', and keep the 2 on the bottom, Cancel '2' with '10' to get '5'
7*13 * 11 * 5 = 91*11 * 5 = 1001 * 5 = 5005
Tell me if better solutions or stuff (also yeah I decided to trade PEMDAS for clarity)

[@detard6808]

Kahn academy but british

[@user-nl6uh5vn2m]

It is too easy for students in Korea
we learn that in middle school3 grade

[@engotl.5681]

you sound like mr. bean

[@aimxnvn_x_geness4998]

Everyone knows that I think. That's not a shortcut.

[@asya6387]

Есть?😂

[@brijrajkumar1134]

find 11!/2! in easy way

[@c9x493]

did anyone else notice this?
1!=1
2!=2
3!=6
1=1
1*2=2
1*2*3=6

[@ishita522]

Then do it 1/2 factorial