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

[@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.

[@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

[@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

[@struggle375]

i learned from this, thanks

[@ashishkumarsharma1323]

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

[@laurasosa859]

awesome video, very simply put, thank you!

[@soundaryahonaguntikar2443]

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

[@-_M-_]

Thank you so much I really appreciate this :D

[@KowboyUSA]

Love these videos.

[@Varshini0912]

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

[@KillerTacos54]

Thank you! That was so helpful!!

[@nusrathfaiza4823]

Thanks for the video it helped a lot 👍

[@ajaii2223]

It reminds me what I forgot thanks a lot dude

[@macanolli]

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

[@aviroopdas5197]

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

[@princechandravanshi4905]

Thank u sir for clearing my concept

[@misnadevi8345]

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

[@mariatourkakis1914]

well explained!

[@harrypotter-as72]

thanks for your correct

[@archanaharikishoresingh2076]

Thanks u cleared all my doubts

[@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

[@brilliantmindscholars57]

Great content Bro

[@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

[@harrypalmtree6143]

thank you for your help mate :)

[@abhishekmather8453]

can anyone suggest me more amazing channel like this

[@raknos13]

blackpenredpen, Eddie Woo, Professor Leonard, Patrick JMT.

[@islamiyazindagi6178]

czcams.com/video/qU5BPOnJOpQ/video.html

[@anoniem012]

One word: PATRICKJMT

[@unknownuser7574]

Numberphile

[@billyzhao5641]

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

[@valariegrace81der85]

Best video I’ve found. Great explication

[@isharak.g.r.u7290]

thank you so much

[@alphabetlivestreamrandomst5848]

THANK YOU! NEW SUBSCRIBER HERE!

[@leosansamontina5961]

Thank You 😊

[@ramkrishnapoudel6011]

I learned it thanks

[@bloonscraft1793]

I learn more here than school

[@taitopotato]

UGH thank you so much

[@stefanodimichele2726]

Nice one

[@lbmmovie6387]

Thanks sir for factorial

[@talkingtal5369]

nice trick

[@simoneoliver7379]

Thanks sm! I understand for my mock now.

[@amitaparve84]

U r awesome thanks

[@himanshu_rwt]

Thanks sir❤️

[@yuvrajade3124]

I understood sir thank u

[@siddharthgager5883]

Thanks sir ❤👍

[@ellajane8154]

Thank you😭

[@farxad5739]

Thanks

[@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? 😀

[@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

[@nevinphilip1580]

Iam from India it is helpful

[@ravikumar-sq3bh]

Thankew

[@allinoneboy444]

How can we find n! ?

[@PabloGarcia-pl8yy]

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

[@ajaymaurya9301]

Thankyou

[@taysiamassie5906]

THANK U

[@brilliantmindscholars57]

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

[@g.mohith1115]

❤ from india 🇮🇳sir

[@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 .

[@gnashkhan4828]

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

[@candicefelice1042]

Excellent explanation of factorials 👌✨👍🏻🎉

[@coys_dan735]

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

[@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]

👀

[@amlanchakraborty5549]

It is clear to me now...

[@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

[@avtarmandya5911]

good mathod

[@codeWithHarsh01]

How can we find the factorial of 125?

[@kyanleong8014]

Too big

[@nuonuokund3952]

How about this 5(4!)?

[@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

[@ashutoshbhure1600]

❤❤

[@anoniem012]

HACIIIIIII THANKSSSSSSS

[@lifesajourney80]

Thank you!

[@nehalekbote5583]

Mr.Bean voice🔥

[@liliacfury]

Thanks! My teacher SUCKS as teaching.

[@perumalsamyperumalsamy2438]

thanks 👌👌👌👌👌😊😊😊😊😊😊😊

[@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

[@TheHarmeet0001]

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

[@edealexander3693]

How do you solve just 70! ?

[@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..

[@vandanajaswal1407]

thanks

[@mattenmedia]

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

[@jesavhelledumalagan2016]

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

[@CloudComputing]

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

[@thenightmarem1319]

ma nigga

[@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)

[@AnkitVadiyatar]

Subscribers are 666K!
Illuminati exposed!!😂😂

[@tharushagunaweera791]

✅✅✅👍👍👍

[@wingman2h]

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

[@anxccc5310]

is factorial actually a real thing taught in school

[@shifa_550]

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

[@dadrar1800]

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

[@detard6808]

Kahn academy but british

[@user-nl6uh5vn2m]

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

[@arkanon8661]

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

[@tonybarfridge4369]

I didn't get it until the very end

[@c9x493]

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

[@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

[@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

[@claymagic1017]

.