1. what is aggregates? Is agregation of all fuzzy set output is necessory in FIS? 2. which Sub-field of AI , make system to perceive , see and understood as human perceive see and understood?(short) 3. People involve in EXpert system?(short) 4. Design of ANNs 5. How decision tree represent hypothesis space differently from Candidate elimination 6. Difference between Single layer network and multilayer network in ANNs.