Question generating device, question generating method, and image forming apparatus

A question generating device comprising:

• a reader configured to read a document and generate a document image;
• an extracting section configured to extract an original form character part on the basis of a marked character part included in the document image, the original form character part representing an original form of a plurality of candidate character parts that are candidate answers to a question generated from the document image;
• a setting section configured to set as the plurality of candidate character parts, the original form character part and at least one character part formed by either or both adding a character to and deleting a character from the original form character part;
• a selecting section configured to select a candidate character part of the highest priority from among the plurality of candidate character parts;
• and
• a generating section configured to generate the question using as an answer the candidate character part of the highest priority.