1. No
2. The majority hires based on work experience even if the person without experience has more knowledge or best skills that the person with experience
3. - 4.Colombia

Because every minute that passes a certain amount of points is deducted from the problem .

You should put the first and second chapter for free and charge for the others at a reasonable price

In my case, I use cf tool extension to add the date,time and my username in the code. https://github.com/xalanq/cf-tool