Question 654635

 {{{2}}} hundreds....-> cold be any digit from {{{0}}} to {{{9}}}

if the {{{tens}}} digit is {{{9}}} more then the {{{ones}}} digit, then the {{{tens}}} digit could be only {{{9}}} because only {{{0+9=9}}}

if the {{{tens}}} digit is {{{9}}}, then the {{{ones}}} digit cold be only  {{{0}}} because given that the {{{tens}}} digit is {{{9}}} more then the {{{ones}}} digit