yeah.. that's it. ;Sb/sth lookes easy to deal with 내가 만만해 보여/만만해? do you think I'm easy? 그 일이 제일 만만해/하다. the job looks easy to cope with 만만하나 can be used in question, 내가 만만하나?>Am I easy?, but 만만하냐? is also used the same. The fine difference between them is that 만만하냐 is for asking sb if it's truth or not directly,>do you think I'm easy? 만만하나 is rather used when they talk to themselves thinking over it like this, "oh he's being mean today, does he think I'm easy??"