Statement-1: If underset(r=1)overset(n)(...

Statement-1: If `underset(r=1)overset(n)(sum)r^(3)((.^(n)C_(r))/(.^(n)C_(r-1)))^(2)=196`, then the sum of the coeficients of powerr of xin the expansion of the polynomial `(x-3x^(2)+x^(3))^(n)` is -1.
Statement-2: `(.^(n)C_(r))/(.^(n)C_(r-1))=(n-r+1)/(r) AA n in N and r in W`.

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