Math SE has a long-standing policy regarding what constitutes a Good Question. The policy is intended to ensure that the collection of questions and answers here is of high quality, is searchable, and is generally of use as a long-lasting reference. Historically, we have tried to deal with low-q...

NB: this post has been edited in the light of @quid's comment revealing all moderator messages link to a text that explicitly contradicts MSE's deletion policies, without disclosing the latter in any form. (They didn't even correct my misconception when I repeatedly stated it in private communica...

After I was sent yesterday into the penalty box for 24 hours, for answering these questions: Can a repeating decimal be said to be exactly equal to a whole number? (now deleted) Let $G$ be a group of functions from a set $S$ to itself with multiplication defined as composition. Find a $G$ with no...