alleryविधाने: (i) सर्व विद्यार्थी कष्टाळू आहेत. (ii) रोहन कष्टाळू नाही. कोणता निष्कर्ष वैध आहे?
Aरोहन विद्यार्थी नाही
Bरोहन आळशी आहे
Cनिश्चित ठरवता येत नाही
Dरोहन विद्यार्थी आहे
Answer & Solution
Correct answer: A. रोहन विद्यार्थी नाही
**व्यत्ययी विधान (Contrapositive):** जर सर्व विद्यार्थी कष्टाळू असतील, तर कष्टाळू नसलेले → विद्यार्थी नाहीत.
Rohan कष्टाळू नाही → Rohan विद्यार्थी नाही.
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