Permutation & Combination | Derangement | Ghanshyam Tewani | Cengage

[infoindia.journal]

When I had started it my Aim was Getting into IITS,

Now, My Aim is to achieve Excellence in mathematics like Sir.

[ananyamahato]

Sir you are the bestest teacher i have ever found in my life. And your quality of teaching is excellent. Sir please don't get disheartened by someones bad comment.

[studybuddy]

Sir your books from cengage are just awesome. Specially the book of co ordinate is just awesome. Thanks for helping us in maths

[bhagyashreedubey]

This class is so helpfull and clear that i have now seriously gained alot of confidence on this topic. Thankew sir for ur kind efforts. 🙏🙏🙏

[vaibhavchhaya]

Patiently explained. Continue the lectures you are helping a lot of people.

[amanaryan]

Thanks sir is topic pe hi mujhe kaafi doubt tha. Now i am able to solve problem on this topic

[subbumaths]

difficult topic can change to easily possible only one person tewani sir .

[varnitgoel]

Dear Sir aapse pyar humesha khush rahe ... U. R a true legend

[kirankumarkommu]

Excellent explanation...selection of the questions is too good...tnq u so much sir....

[obulamsubbareddy]

You are precious sir
Jewel of mathematics

[_Devansh-mrkv]

Sir you and your book is to the point and best.

[amardeepsingh]

Thank u sir do continue these lectures

[ananyamahato]

Sir can you please explain circlular permutations

[dakshgupta]

The Best Teacher For JEE Maths in the world..

[protyaydeepshee]

Jee main ke liye to bohot channels hai including sir's but jee advance ke liye he is the best

[alvsseth]

Thanks a lot sir I become confused in this but you make easier

[wunboonail]

Thank you, it was very clearly explainded.

[alphabeta]

In the function q 6c6 has 0 dearrangement then why did u add it?

[avi]

wait so if we have infinite letter(tending to atleast)we send them randomly hence we have n! ways then the number of ways we mess up so bad that no one get their letter is 1/e???
cause that would be e^-1 's expansion

[MMA_Mayhemm]

Sir, I want to buy your video lecture.