When a question is closed as "unclear what you're asking", it gets attached the following message:
Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
According to this statistics, during the last 90 days following this advice was successful precisely zero times -- i.e. no question on MathOverflow which was closed as "unclear what you're asking" has been edited and then reopened.
A total of 141 questions were closed as "unclear what you're asking" during this time, of which 41 were edited without being reopened and 5 were reopened without having been edited.