Which of the following statements are sub-contraries?
A. All sparrows are birds.
B. No sparrows are birds.
C. Some sparrows are birds.
D. Some sparrows are not birds.
Choose the correct answer from the options given below:निम्नलिखित में से कौन-से कथन उप-विपरीत (sub-contraries) हैं?
A. सभी गौरैया पक्षी हैं।
B. कोई भी गौरैया पक्षी नहीं है।
C. कुछ गौरैया पक्षी हैं।
D. कुछ गौरैया पक्षी नहीं हैं।
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए:
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Correct answer: A. C and D Onlyकेवल C और D
Explanation
In the traditional square of opposition, the two particular propositions — I ("Some S are P") and O ("Some S are not P") — are sub-contraries: they cannot both be false, though both may be true. Here these are statements C and D. A and B are the universal pair and are contraries.परंपरागत विरोध-वर्ग (square of opposition) में दो विशेष कथन — I ("कुछ S, P हैं") तथा O ("कुछ S, P नहीं हैं") — उप-विपरीत होते हैं: ये दोनों एक साथ असत्य नहीं हो सकते, यद्यपि दोनों सत्य हो सकते हैं। यहाँ ये कथन C और D हैं। A और B सार्वभौमिक युग्म हैं और विपरीत (contraries) हैं।More Logical Reasoning questions
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