LIC AAO Prelims practice question
Statements: No phones are books. All books are flowers. Conclusions: I. All phones are books II. No phones are books. Which of the conclusions follow(s) from the statements?
From a LIC AAO Prelims Reasoning practice set · Reasoning
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Correct answer: (B) Only conclusion II follows
Statements: No phones are books. All books are flowers. Conclusion I: "All phones are books." is true in some cases consistent with the statements but false in others (or never true), so it does not definitely follow. Conclusion II: The given statements leave no possible case where phones and books overlap, so "No phones are books." definitely follows. So: Only conclusion II follows.
हिंदी में प्रश्न
कथन: कोई फोन, किताबें नहीं है। सभी किताबें, फूल हैं। निष्कर्ष: I. सभी फोन, किताबें हैं II. कोई फोन, किताबें नहीं है। 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: कोई फोन, किताबें नहीं है। सभी किताबें, फूल हैं। निष्कर्ष I: "सभी फोन, किताबें हैं।" कथनों के अनुरूप कुछ स्थितियों में सत्य हो सकता है पर सभी में नहीं (या कभी नहीं), इसलिए यह निश्चित रूप से अनुसरण नहीं करता। निष्कर्ष II: दिए गए कथनों के अनुरूप हर संभावित स्थिति में "कोई फोन, किताबें नहीं है।" सत्य है, इसलिए यह निश्चित रूप से अनुसरण करता है। अतः: केवल निष्कर्ष II अनुसरण करता है।
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