3. A question paper forming method, comprising: reading an image of a question paper, the question paper including text in which a character string for constituting an answer of a question is designated by a mark; extracting the character string designated by the mark from the question paper; forming electronic data of an answer list by the use of the extracted character string; deleting the character string designated by the mark from the question paper; setting an answer column to a portion where the character string is deleted to form electronic data of a question sentence; and printing out an answer document which contains the electronic data of the answer list and the electronic data of the question sentence as the question paper on separate papers respectively.
4. A question paper forming method as claimed in claim 3 , further comprising: registering into a database the electronic data of the answer list and the electronic data of the question sentence.