[tex] \frac{1}{10} < \frac{10}{x} < \frac{1}{9} \\ \\ \frac{10}{100} < \frac{10}{x} < \frac{10}{90} \\ \\ 100 < x < 90 \\ \\ \\ x = 91.92.93.94.95.96.97.98.99[/tex]
