It may happen that a question has zero answers, but is actually already answered satisfactorily in a comment. An example is [this question][1]. I think this is somewhat misleading, as the "0 answers" suggest that nobody answered so far. What to do about this (if any)? [1]: https://mathoverflow.net/questions/134381/solvability-of-finite-groups-of-order-coprime-to-15-proof-without-using-cfsg