[" If "S(r)=|[2r,x,n(n+1)],[6r^(2)-1,y,n...

[" If "S_(r)=|[2r,x,n(n+1)],[6r^(2)-1,y,n^(2)(2n+3)],[4r^(3)-2nr,z,n^(3)(n+1)]|" then "sum_(r=1)^(n)S_(r)" does not depend on "],[[" (A) "x," (B) "y," (C) "n]]

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If S_r = |[2r,x,n(n+1)],[6r^2-1,y,n^2(2n+3)],[4r^3-2nr,z,n^3(n+1)]| then sum_(r=1)^nS_r does not depend on-

If S_r=|{:(2r,x,n(n+1)),(6r^2-1,y,n^2(2n+3)),(4r^3-2nr,z,n^3(n+1)):}| , then the value of sum_(r=1)^(n)S_r is independent of

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