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प्रश्न
Choose the correct alternative:
Which one of the following is incorrect? For any two propositions p and q, we have
पर्याय
¬(p v q) ≡ ¬p ∧ ¬q
¬(p ∧ q) ≡ ¬p v ¬q
¬(p v q) ≡ ¬p v ¬q
¬(¬p) ≡ p
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उत्तर
¬(p v q) ≡ ¬p v ¬q
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| p | q | (p ∧ q) → ¬p |
| T | T | (a) |
| T | F | (b) |
| F | T | (c) |
| F | F | (d) |
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