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	Prove n-1Cr+n-1Cr-1=nCr \| Combination \| Statistics Tutor (Asad International Academy) View
	Combinations \| Theorem \| To prove that nCr + nCr-1= n+1Cr (Hi-Q Learning) View
	Proof of Binomial Coefficients to follow Pascals Triangle (Anil Kumar) View
	nCr = (n-1)C(r-1) + (n-1)Cr (Chew Sze Chong) View
	n-1Cr : nCr : n+1Cr = 6:9:13,Find n and r... combination concept (+1 class)... (Math's satjeet) View
	Show that (nCr) + (nCr-1) = (n+1Cr).. (QUORA TUTOR ) View
	If 𝑛−1𝐶𝑟=(𝑘2−3)𝑛𝐶𝑟+1n−1Cr=(k 2 −3)nCr+1, find the value(s) of 𝑘 JEE Main Combinatorics Problem (Pratap Tutors) View
	𝑛𝐶𝑟+𝑛𝐶𝑟+1=𝑛+1𝐶𝑟+1 Proof (Lets Prove It!) View
	nCr + nCr-1 = n+1Cr Proof \| Class 11 \| Mathematics \| Permutations and Combinations\|NCERT\| IIT JEE\| (Lectures by Shreedarshan K) View
	ncr+nc(r+1)=(n+1)c(r+1)\| Permutations and Combinations\| (Dr Rakesh Kumar Tripathi) View