00:47
If nCr nC(r 1) = (n 1)Cx then x = (a) r (b) r-1 (c) n (d) r 1
R 1 N C R Mp3 & Mp4
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06:47
If an= summation 1/nCr then summation r/nCr is equal to (a)(n-1)an (b)nan (c)1/2nan (d)NOT | BT PYQπ₯
05:44
If (n 1)C(r 1) : nCr : (n-1)C(r-1) = 11:6:3, find the value of n and r| Combination | Best Tutorial
05:57
Proof of Binomial Coefficients to follow Pascals Triangle
03:48
Find x if nCr nC(r 1) = (n 1)Cx - Permutations & Combinations - Class 11 Mathematics
09:44
If nCr denotes the number of combination of n things taken r at a time, then nCr 1 nCr-1 2ΓnCr=?
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07:40
How to we can prove this general formula of (nCr nCr-1 = n 1Cr)
08:43
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04:51
If nPr = nP(r 1) and nCr = nC(r-1) then find n and r || ExcMATHS