nP3 = 5 Factorial Trick to Solve w/o Calculator IB Math

[@jovaniemacasaet3699]

LOVE YOU PROFESSOR ! I REALLY LEARNED I LOT....

[@krishamaecagande5790]

how to find the r in combinationand permutation?

[@ashikabeed2323]

How did you get5.4.3.2

[@arjay_2002]

where on earth is n-1 from

[@schanzabukhari6064]

It's a factorial. N! (say n factorial) = n × (n-1) × (n-2)... till 1. E.g. n! = 4!, then 4! = 4 × 3 × 2 × 1 E.g. n! = 7!, then 7! = 7 × 6 × 5 × 4 × 3 × 2 × 1 I know this is from 4 months ago but sometimes others have similar Qs.

[@tayyabsohail2932]

Watch khan academy permutation

[@templadojeanetteclaireh.6545]

how did you get the "n(n-1) (n-2)?

[@MathematicsTutor]

You may watch some videos on factorial. Here is the playlist. kzbin.info/www/bejne/b6W0e4WAfLh9l5I Thanks

[@jojojawjaw]

Great tutorial! thank you

[@yameenasamad6205]

Sir you are teaching a trick with the help of a calculator .....what should we do then in exams ....

[@gabrelladawit9829]

can you solve the question :given that nPr=1936 and nCr=484, then find the value of 3rC2+2rP2 with out using acalculator

[@gollapremkrishna1223]

Thanks for the trick sir.

[@tarunc4017]

Thanks dude

[@anilkumarsharma8901]

Permutations ka graph banao????

[@alakanandanandatsa9694]

How u got r value??

[@MathematicsTutor]

Thanks. Try to get r value for 8Pr = 56 by rearranging the formula. You know r = 2, still it helps to understand the steps. Hope that helps.

[@reynoldbabor6160]

Alakananda Nandatsa

[@MrCaffiene]

Thnx it was so helpful.

[@sahjigar8684]

7 . 5pr = 7pr - 1,r=? Solve it question

[@fevenmasresha3491]

😊😊😊😍

[@jainilpatel5589]

very educational

[@yannickniabeunoumi116]

SVP prof, comment résoudre nPn-2 = 56 ?

[@Sy-lk1nu]

Nice!!

[@memories5998]

Thanks sir

[@jerechojosesumalpong2515]

Thank you that is very helpful

[@shardashikshasadansecschga9161]

nc1=5multiply np3...find the value of n

[@kalpajyotisvlog7075]

Excellent sir g.. Thank you for the trick

[@alakanandanandatsa9694]

How to find cube root without calculator

[@MathematicsTutor]

Thanks for the question. Here is a video to find the cube root without calculator. Use this technique to alsi estimate the cube root if required.kzbin.info/www/bejne/jWi3poSapLqAg5o Thanks

[@anitahubballi4029]

Thank you sir.. 13pr=150 find the value of r..

[@thecharlotte2326]

thank u so much

[@gyasuddinansari4132]

Factorial and permutation ka all example

[@MathematicsTutor]

Thanks Here are 2 Playlist for you. Factorial Playlis: kzbin.info/aero/PLJ-ma5dJyAqrsXrlHtMMlupj1XflWQAqh Related Playlist: kzbin.info/aero/PLJ-ma5dJyAqqvQaevRUhshT_EmYvF52oq

[@mingyistan7149]

thank you sir this is very helpful

[@tazz19560]

n(n-1) = 56 ?

[@MathematicsTutor]

7 x 8 = 56

[@SudheerKumar-qv9pq]

12np4 we need to solve

[@Smiling.104]

Its very useful😍

[@kinguuuuuu3765]

How to find 'r'

[@MathematicsTutor]

Here is an example for both n and r: kzbin.info/www/bejne/naKukoRop9SdsJY

[@prashantvaidhya3541]

np6=20.np4 ansewr plzzz

[@mdfashiuddin4063]

Ans 8

[@hanannibab1763]

i do see that

[@dinrajkdileep7859]

Thank uu soo much sir..

[@wisdomjoseph-zu6iy]

What your solving is rubbish, you just assumed that and made a tutorial of it, it's not a formular or a true trick