RPF Constable practice question
Statements: All villages are dogs. All dogs are birds. Conclusions: I. No dogs are villages II. Some villages are dogs. Which of the conclusions follow(s) from the statements?
From a RPF Constable Reasoning practice set · Reasoning
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Correct answer: (B) Only conclusion II follows
Statements: All villages are dogs. All dogs are birds. Conclusion I: "No dogs are villages" is false in every case consistent with the statements, so it does not follow. Conclusion II: "Some villages are dogs" holds in every case consistent with the statements, so it definitely follows. So: Only conclusion II follows.
हिंदी में प्रश्न
कथन: सभी गाँव, कुत्ते हैं। सभी कुत्ते, पक्षी हैं। निष्कर्ष: I. कोई कुत्ते, गाँव नहीं है II. कुछ गाँव, कुत्ते हैं। कथनों से कौन सा/से निष्कर्ष अनुसरण करता/करते है/हैं?
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सही उत्तर: (B) केवल निष्कर्ष II अनुसरण करता है
कथन: सभी गाँव, कुत्ते हैं। सभी कुत्ते, पक्षी हैं। निष्कर्ष I: "कोई कुत्ते, गाँव नहीं है" कथनों के अनुरूप हर स्थिति में असत्य है, अतः अनुसरण नहीं करता। निष्कर्ष II: "कुछ गाँव, कुत्ते हैं" कथनों के अनुरूप हर स्थिति में सत्य है, अतः निश्चित रूप से अनुसरण करता है। अतः: केवल निष्कर्ष II अनुसरण करता है।
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