Which of the following statements are sub-contraries?
A. All nurses are caring human beings.
B. No nurses are caring human beings.
C. Some nurses are caring human beings.
D. Some nurses are not caring human beings.
Choose the correct answer from the options given below:निम्नलिखित में से कौन-से कथन उप-विपरीत (sub-contraries) हैं?
A. सभी नर्सें देखभाल करने वाली मानव हैं।
B. कोई नर्स देखभाल करने वाली मानव नहीं है।
C. कुछ नर्सें देखभाल करने वाली मानव हैं।
D. कुछ नर्सें देखभाल करने वाली मानव नहीं हैं।
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए:
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Correct answer: D. C and D onlyकेवल C और D
Explanation
In the traditional square of opposition, sub-contraries are the two particular propositions I ('Some S are P') and O ('Some S are not P') — they cannot both be false, though both may be true. Here C is the I proposition and D the O proposition. A and B (the universal A and E propositions) are contraries, not sub-contraries.परंपरागत विरोध-चतुष्कोण में उप-विपरीत वे दो विशेष कथन होते हैं — I ('कुछ S, P हैं') तथा O ('कुछ S, P नहीं हैं') — जो दोनों असत्य नहीं हो सकते, किंतु दोनों सत्य हो सकते हैं। यहाँ C, I कथन है और D, O कथन है। A और B (सार्वभौम A तथा E कथन) विपरीत (contraries) हैं, उप-विपरीत नहीं।More Logical Reasoning questions
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