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Statement 1: sum sum(0le ilt j le n)(i/ ...

`Statement 1:` `sum sum_(0le ilt j le n)(i/ (.^n c_i)+j/(.^nc_j))` is equal to`(n^2)/2a` , where a ,`sum_(r=0)^(n) 1/(.^n"" c_r) =a` `Statement 2:``sum_(r=0)^(n) r/(.^n c_r)=sum_(r=0)^(n) (n-r)/(.^nc_r)`

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