How to dispaly unanswered questions

Question

Hi,

i am displaying the question paper in gridview. i done paging for that everything is completed . now user did not answer some questions . how to display all unanswered questions in a page. i am maintaing question no and answer in hash table . but i have to dispaly all unanswered questions with question no and question and options. how can i achieve this . please help me

Thanks
P.Nagaraju