May be this is not really a big issue. But it took my attention because it was done by a moderator of the site.
My question is what can we do, if a the original question is marked as a duplicate of question which has been posted later?
The question here has been marked as a duplicate of this question which has been posted later. This can be considered as okay if the later question has an accepted answer at least which justify the statement of duplicate marking
This question already has an answer here:
, but it also doesn't have an answer.
All I did was to flag to moderator attention.