because that question is not relevant to my question when i post them then suddenly condition change and then again i am going to post again same question thats why ... thats why duplicate occurs with slightly changing
Just leave a comment at the bottom of the questions which needs to be deleted and let the people know that the requirement is changing and you will create a new post. Once the new post is created, just add the link to the new post. Doing this is much better than just deleting the post completely.
