78. DERANGEMENT

[@shlok1124]

Sir this explanation was crystal clear and very easy to understand. Unbelievable how easy this topic of derangements was! May you get noticed by every student in need for the topics you teach.

[@AmitKhuranaSir]

Hi... I want to help those students who can't afford costly coaching.... Share my channel with those who really need it.... Here is the link.... kzbin.info

[@vidhayakjpsingh2795]

30:40 excellent tips and connection to logic

[@Yellomellowil]

I never skips any ads in this channel kitna easy way mein padhaya sir aapne ❤️❤️

[@sujoykrhaldar]

30:40 find compliment using logic no one will teach like this !!! thank you

[@hak4390]

Sir, Aapke jaise guru students ko school ke time se mile hothey toh pura desh hi badal jayega sir 🙏🏻💯 Thank you sir

[@conceptisthekey5643]

3:47 😭 Same mistake done by me in my jee mains exam.Thank u so much sir for concept clearity

[@rejoychakraborty929]

Hats off to you sir. Apne jaise pura visualize karwa diya ek jhatke mein. Thank you very much sir. We are grateful to you.

[@than0s869]

Great explanation sir, Honestly say, I am very weak in math but your combinatorics playlist is very awesome.every point/example is explain with proof waa....😃 All dough are crystal clear. Thank you for your afer effort 🥰

[@patelheet2080]

Sir I have one question framed by me . Q) How many jumbled word from letter of word "mississippi" so that no letter at its original place ?

[@ChandanAkbarpuria]

Complete explanation no doubts left thank you sir

[@siddhantjha6649]

shukriya dronacharya

[@jayadixit5526]

sir thank you so much for excellent explanation ....pls make videos for probability and calculus

[@akeelmalik20]

amit sir on fire ❤ you from kashmir

[@uchiha_hrst]

Sir Wo EQUATION wale question me agar alphabets repeat ho rahe hote tab kon se method se hota

[@usamakhalid590]

Amazing sir

[@abhishekchoudhury3328]

thank you sir !

[@saychles]

Sir in the word EQUATION, we have all different letters but what if we had similar letters in a word like ARBITRARY. will the approach still be the same with the letter A and R repeating?

[@chetansingh2426]

same doubt did you figure out the answer

[@shojolagh6065]

Suppose 5 CPUS 100 slots if those CPUs correct positions are only 5 slots then derangements are D5*95p5 . Is it correct?

[@AmitKhuranaSir]

No.... If you know the derivation then you can easily get the answer..... See here 100p5 are total ways and from that we will subtract all these cases.... case 1:- one cpu at its correct place 5c1*99p4 case 2:- two cpu at its correct place 5c2*98p3 case 3:- 3 cpu at its correct place 5c3*97p2 case 4:- 4 cpu at its correct place 5c4*96p1 case 5:- 5 cpu at its correct place 5c5*95p0

[@shojolagh6065]

@@AmitKhuranaSir But sir , here we have only 5 CPUS and 100 slots how can total be 100! ?

[@AmitKhuranaSir]

@@shojolagh6065 oh yes..... see now I have edited the answer....

[@vidhayakjpsingh2795]

100c5*D95

[@alekhyobanerjee2099]

@40:58 'MISSISSIPPI' no. of jumbled words such that no letters are in its original position. How to solve this question ?

[@AmitKhuranaSir]

Refer this link..... kzbin.info/www/bejne/roK1foN9YquZhZo

[@mrutyunjayapradhan3599]

It was great sir 💕

[@mathsmaker5635]

35:17 i have doubt ki 5C3 se to hum log 3 element choose kar payenge sirf but vo log correct place pe hi shift honge uski kya garantee hai. vo element bhi galat jagah par baith sakenge na ?? please solve my confusion 🙏🙏🙏

[@nitinbohara1414]

we are not choosing here, 5C3 is the total possibility of 3 elements at the correct place from 5 places. for example: first consider 1,2,3 at the correct position then do Dearrangement with 4,5. similarly do it for (1,2,4), (1,2,5), (1,3,4), (1,3,5), (1,4,5), (2,3,4), (2,3,5), (2,4,5), (3,4,5) at correct places. notice I have written 10 possibilities for all 3 elements from 5 elements that can be at the correct positions. which is nothing but 5C3

[@sabyasachighosh8237]

You are awesome

[@protagonistshivam6915]

sir itna v badhiya mat padhaiye ki gate exam board jaisa lge