I was reading [Can I answer my own question?](https://askubuntu.com/help/self-answer) There's a sentence which says: *To encourage people to do this, there is a checkbox at the bottom of the page every time you ask a question. If you have more than 15 reputation and already know the answer, click the checkbox that says "Answer your own question" at the bottom of the Ask Question page.*
In my understanding, if the user wants to post Q&A together then 15+ reputation is required. But if answer is posted after a while, say some hours, then they can accept his answer regardless how much reputat…