1.
If \dfrac{1 + 3 + 5 + \cdots \text{ (upto n terms)}}{4 + 7 + 10 + \cdots \text{ (upto n terms)}} = \dfrac{7}{20} \log_{10} x and n=log⁡10x+log⁡10x2+log⁡10x3+⋯+log⁡10xnn = \log_{10} x + \log_{10} x^2 + \log_{10} x^3 + \cdots + \log_{10} x^n, then xx is equal to