Hello I am new in this stack-exchange community which I think is the best. I have been asking lately (as you can see) specific questions about specific topics that I have trouble learning. Even writing them in the same way some times. Some people see that as not good. Could somebody explain me which way to go if I just want a short answer about a specific topic. I don't want to write an article when seeking a simple answer. What is ok and what not?
You were given this notice:
Please improve the question by providing additional context, which ideally includes your thoughts on the problem and any attempts you have made to solve it.
The link in this text leads to the article How to ask a good question? Please read it carefully, especially the parts titled Provide context and Choose a good title. Your questions lack both. Also, the part on writing:
This is not some random internet forum. We strive for well-composed questions and answers of lasting value -- so keep in mind that your question can be of interest to others as well. ... The use of proper spelling, grammar and punctuation makes your question easier to understand, more appealing, and more likely to attract knowledgeable experts to answer your question.
Here are some personal thoughts that by no means represent the site.
Bylaws are hard to get right, in particular for a community that means to be inclusive, friendly, and helpful. I never like when I read what type of questions are allowed; but I would be hard-pressed to come up with a better list probably.
I think no one wants an elitist site; but the site is also not an alternative to Khan academy. It's fair to say that, ideally, you come here when you get stuck on a topic you already invested a fair amount of time in, to get a nudge and maybe a full solution. The site, though, is neither able nor meant to teach math essentially from its beginnings, and through every step; for that, there is, well, Khan academy.
As the other answer mentioned, questions left here ideally are of some lasting use for others in the future; or for still others in the present learning something while answering. From browsing your questions, with the exception of the one with the typo, these were all simple exercises about very basic topics that I cannot believe one could not work out oneself, assuming sufficient time or study, and sufficient time working on the exercise. In math, 'sufficient' is rarely 10 minutes. While it's a subjective call and I might of course be wrong, it looks as if when being stuck for a moment, you turn to MSE, with a question that you must be able to solve yourself. If you truly cannot, the topic of study or self-study is simply not understood, the answer doesn't illuminate either, and the process repeats. The site can help you when truly stuck, but is not an easily available on-line tutor.