Solve for the unknown number of years in each of the following:

Note: Do not round intermediate calculations and round your answers to $2$ decimal places, e$.$g$.,32\mathrm{.}16.$

$\backslash$table$[[$Present Value,Years,Interest Rate,Future Value$],[$$$,460,,10,\%,$$$,1,142],[,710,,11,\%,,1\mathrm{.}553],[,17\mathrm{.}400,,16,\%,,203,139],[,20,500,,13,\%,,249,238]]$