How to mark a question as solved?

There is no option to mark questions as "Solved" or "Answered", if Any one reply is received against your query, than it's considered as solved. (i.e removed from unanswered Query)

but than also you can continue questions answers in that..
and other Person can also reply after one reply received by you..

That is not true Sagar-ji, this question is still marked as "Unanswered" (see at the top-right corner of first post) even though we both replied.

At the top-right corner of this post, tab show named " Unanswered"
this tab is not relating to this post...it's link to show all questions which is still unanswered in forum...
if you click on that "Unanswered" Tab you can see all unanswered post...

Oh... I see. Thanks for your answer, I got confused :)

Most welcome........