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Ravindra gupta sir 🎉🎉🙏

Our sir taught this while teaching PnC. Didnt know it was called this. Thanks. You are the only one who teaches like my teacher on youtube. I really like your concept videos.

Done by own 👍

gazab sir, pls filtering of terms using nth roots of unity etc pe funda bnado, jee main ke bad share kar diya ab competition badhe to bhi kya, hum aur badh jaynge

beautifulq and explaination...thank u

First step was the only thing to think.....thank u sir for this video❤

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a₁+a₂+a₃+a₄+a₅+a₆+a₇=2n 1≤a₁,a₂,a₃,a₄,a₅,a₆,a₇≤6 4≤n≤21 Sum of coefficient of even powers in expansion of (x+x²+x³+...+x⁶)⁷=f(x) [say] i.e.{f(1)+f(-1)}/2=6⁷/2 (Ans) Thank you sir

2/3 Will try that tetrahedron wala using this Will share working when i'm done

Sher ne like share comment kr diya🤠 Subscribed pehle se tha😎 Btw sir naya concept seekha video se... Thank u

Sir aapka adv batch kab aayega ?

sir pls make a video on the binomial fundas the concept was amazing!

And now the syllabus bolne waale ro rahe hain😅😅😅😅 Thanks sir for alerting us

All the 7 dice have 6 faces and so (6⁷-1)/2

Very good question sir . Thank you sooo much. Shared with all friends

Actually this is the proof of beggar's method through multinomial

sir the same concept can be used in a question which states as find the coefficent of x^99 in (x-1)(x-2)(x-3)(x-4)........(x-100) ans is 100^C1 *(-1)^99*X^99

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Sir aap live bhi thoda lijiye channel ki growth hogi

Sir ji 12 batch any information

19:56 --> Yes sir please make a seperate video on this funda

Sir jese aapne ke end me binomial ka result bataya addition wala sir please aese concepts pe video laate rhiyega please

We want video on Stirling number method of first and second kind for pnc chapter 🙏

Bhai log share karo sab

Sir, complex no. and Matrix pai funda please

is ans to hw q (6^7)/2 ?

Thank you sir❤

Sir can this method be used universally for all problems related to distribution of objects ? Like you said that beggar method fails in front of this method so I am asking that is this method more fundamental than beggar method ?

£(r+1)ncr=101(2*101 -1)

My ans :101((2*101) -1)

Which formula do you use for circular permutations of alike objects

Another way Given problem may be mapped into What is the probability that largest angle of a triangle, ( x say) would be > = 90° . Minimum value of x would attain for an equilateral triangle. Hereby 60 ° <= x <= 180° Centre would be inside the triangle if x < = 90° Hereby probability is ( 90° - 60°)/ ( 180° - 60°).= 1/4

Sir please make a video on. Complex nos. in polynomial... Can we use f(w³)+f(w²)+f(w)+f(1)/4 for coeff. of x⁴ in polynomial??

Ioqm ke time seekha tha last time probability aur PNC mai use kiya tha isse ❤❤ ab revise hogya thanks sir ❤❤

If px is a polynomial such that px>0 for all x belongs R Then prove that px+p'x+p''x+p'''x.....upto nth derivative is positive

Ans to hw question is 6*7/2