Category: Number Theory

Question Number 427 by 9999 last updated on 25/Jan/15 $$\mathrm{How}\mathrm{many}\mathrm{digits}\mathrm{are}\mathrm{present}\mathrm{in}$$$$\mathrm{periodic}\mathrm{part}\mathrm{for}\mathrm{decimal}\mathrm{expansion}$$$$\mathrm{of}\frac{1}{7^{11}}?$$ Commented by 123456 last updated on 02/Jan/15 $$\mathrm{10}^{{n}}…