Which of the following statements are logically equivalent?
(A) Some non-dogs are non-friendly animals
(B) Some dogs are friendly animals
(C) Some friendly animals are dogs
(D) All dogs are friendly animals
Choose the correct answer from the options given below:निम्नलिखित में से कौन-से कथन तार्किक रूप से समतुल्य हैं?
(A) कुछ गैर-कुत्ते गैर-मित्रवत पशु हैं
(B) कुछ कुत्ते मित्रवत पशु हैं
(C) कुछ मित्रवत पशु कुत्ते हैं
(D) सभी कुत्ते मित्रवत पशु हैं
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए:
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Correct answer: A. (B) and (C) Onlyकेवल (B) और (C)
Explanation
(C) is the converse of the I-proposition (B), and conversion of an I-proposition is valid, so (B) and (C) are equivalent. (D) is a universal A-proposition and says more than (B). (A) is a different I-proposition about non-dogs and is not obtained from (B) by any valid immediate inference.(C), I-प्रतिज्ञप्ति (B) का परिवर्तित रूप (converse) है, और I-प्रतिज्ञप्ति का परिवर्तन वैध होता है, अतः (B) और (C) समतुल्य हैं। (D) एक सर्वव्यापी A-प्रतिज्ञप्ति है जो (B) से अधिक कहती है। (A) गैर-कुत्तों के बारे में एक भिन्न I-प्रतिज्ञप्ति है जो (B) से किसी वैध तात्कालिक अनुमान द्वारा प्राप्त नहीं होती।More Logical Reasoning questions
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