Recommended Questions
- Show that, nCr + (n-1)C(r-1) + (n-1)C(r-2) = (n+1)Cr
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- Prove that C(n,r)+C(n-1,r)+C(n-2,r)+......+C(r,r)=C(n+1,r+1)
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- nCr + 2.nC (r-1) + nC (r-2) = (n + 2) Cr (2 <= r <= n)
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- Show that,nCr+(n-1)C(r-1)+(n-1)C(r-2)=(n+1)Cr
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- The value of sum(r=1)^n(-1)^(r+1)("^n C r)/(r+1) is equal to a.-1/(n...
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- If sum(r=1)^(n)r^(3)((C(n,r))/(C(n,r-1)))=14^(2) then n=
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- C(n,r)+C(n,r-1)=C(n+1,r)
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- Given that C(n, r) : C(n,r + 1) = 1 : 2 and C(n,r + 1) : C(n,r + 2) = ...
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- Given that C(n, r) : C(n,r + 1) = 1 : 2 and C(n,r + 1) : C(n,r + 2) = ...
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