Relatively often, especially new users, ask a few related questions in one thread. It may sound natural for them (they treat it as a forum or want to solve all doubts in one question). However:
- it takes time to read the question,
- it is hard to answer,
- it is hard to read answers (like
respectively: no, yes, no, no, shift, attack),
- it is hard to vote meaningfully (as e.g. I can consider some parts of answer good, some - not),
- it is hard to recycle it / make it useful for another users.
So, what we should do in such cases? Once they are answers it may be wasteful to trash them. But I would suggest comment + close vote ASAP (but no down vote, if the subquestions are otherwise good).
Or, even better, adding close vote option with "multiple threads in one question" (it is not as common on other SE sites, but here it is very much).
A recent example: