If `sum_(r=0)^n (2r)/(C(n,r))=sum_(r=0)^n (n^3-3n+3)/C(n,r)` then

If sum_(r=0)^nr/(^n C_r)=sum_(r=0)^n(n^2-3n+3)/(2.^n C_r) , then a. n=1 b. n=2 c. n=3 d. none of these

If sum_(r=0)^(n) (r)/(""^(n)C_(r))= sum_(r=0)^(n) (n^(2)-3n+3)/(2.""^(n)C_(r)) , then find n

If sum_(r=0)^(n) (r)/(""^(n)C_(r))= sum_(r=0)^(n) (n^(2)-3n+3)/(2.""^(n)C_(r)) , then

If sum_(r=0)^(n)(r)/(nC_(r))=sum_(r=0)^(n)(n^(2)-3n+3)/(2*^(n)C_(r)), then n=1 b.n=2c.n=3d .none of these

Let n in N, S_n=sum_(r=0)^(3n)^(3n)C_r and T_n=sum_(r=0)^n^(3n)C_(3r) , then |S_n-3T_n| equals

Let n in N, S_n=sum_(r=0)^(3n)^(3n)C_r and T_n=sum_(r=0)^n^(3n)C_(3r), then |S_n-3T_n| equals

If sum_(r=0)^n(2r+3)/(r+1), C_r=((n+k)*2^(n+1)-1)/(n+1) then 'k' is

If s_(n)=sum_(r=0)^(n)(1)/(.^(n)C_(r))and t_(n)=sum_(r=0)^(n)(r)/(.^(n)C_(r)) , then (t_(n))/(s_(n)) is equal to

If s_(n)=sum_(r=0)^(n)(1)/(.^(n)C_(r))and t_(n)=sum_(r=0)^(n)(r)/(.^(n)C_(r)) , then (t_(n))/(s_(n)) is equal to