On the planet Zog, all numbers are writen with the digits in reverse order. For example, forty-fve is writen as $$54$$. Pluto, an inhabitant of Zog, was given the subtracton $$729$$---$$26$$. If no mistakes were made, what answer did Pluto write down?  Answer:~\uline{~~~~~~~~~~}~ 
Overseas Competition->Knowledge Point->Combinatorics->Logical Reasoning->Reasoning using Hypothesis->True or False Questions (for answers or numbers)