Mathematics · Predicate Logic
विधेय तर्क (predicate calculus) में निम्नलिखित में से कौन-सा एक मान्य अनुमान (valid inference) है?
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- 1'∃x (P(x) ∧ Q(x))' से, '∀x P(x)' का अनुमान लगाना
- 2'∃x P(x)' से, '∀x P(x)' का अनुमान लगाना
- 3'P(a) → Q(a)' से, '∀x (P(x) → Q(x))' का अनुमान लगाना
- 4'∀x P(x)' और '∀x (P(x) → Q(x))' से, '∀x Q(x)' का अनुमान लगाना✓
सही उत्तर देखें
'∀x P(x)' और '∀x (P(x) → Q(x))' से, '∀x Q(x)' का अनुमान लगाना
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