alleryयदि किसी वैध तर्क (valid argument) के सभी आधार वाक्य (premises) सत्य हैं, तो उसका निष्कर्ष अवश्य होना चाहिए:
Aसंभवतः असत्य
Bउनसे असंबंधित
Cअनिवार्य रूप से सत्य
Dकेवल संभावित रूप से सत्य
Answer & Solution
Correct answer: C. अनिवार्य रूप से सत्य
वैधता (Validity) का अर्थ है कि आधार वाक्य सत्य हों और निष्कर्ष असत्य हो, ऐसा संभव नहीं हो सकता; अतः सत्य आधार वाक्य अनिवार्य रूप से सत्य निष्कर्ष की ओर ले जाते हैं।
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