I actually disagree on 10, I just estimated the population of New York then looked it up and was off by an order of magnitude. Good chance I'd do worse in an interview situation than sitting at home. A few more estimates with errors of this size and we've learned what? I have a poor grasp of US census data? Unless this is a realistic approximation of the kind of thing your doing with this job, the time in the interview would be better spent on a problem within your domain, but that means the interviewer has to spend time coming up with something instead of Googling "interview questions". See also: "why are manhole covers round?" Which is a real question we asked all of our candidates at a previous job right up until I got control of the process (fun fact, invalid assumption. They come in all shapes and triangles are surprisingly common)

But agreed on the rest. OP thinks they are bad, when really they are poorly worded, and they would be better off taking a moment to think what kind of information the interviewer is trying to get at with their questions. Heck if the job involves interfacing with other people the ability to do this can even be an important signal on if the candidate is right for the job. A lot of people are really bad at asking what they are looking for.