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प्रश्न
Choose the correct alternative:
Which one of the following is not true?
विकल्प
Negation of a statement is the statement itself
If the last column of the truth table contains only T then it is a tautology
If the last column of its truth table contains only F then it is a contradiction
If p and q are any two statements then p ⟷ q is a tautology
उत्तर
If p and q are any two statements then p ⟷ q is a tautology
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संबंधित प्रश्न
Let p : Jupiter is a planet and q : India is an island be any two simple statements. Give verbal sentence describing the following statement.
p → ¬q
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¬P ∧ ¬q
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(¬p → r) ∧ (p ↔ q)
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Verify whether the following compound propositions are tautologies or contradictions or contingency.
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The operation * defined by a * b = `"ab"/7` is not a binary operation on
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Which one of the following statements has the truth value T?
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Which one of the following statements has truth value F?
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If a compound statement involves 3 simple statements, then the number of rows in the truth table is
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| p | q | (p ∧ q) → ¬p |
| T | T | (a) |
| T | F | (b) |
| F | T | (c) |
| F | F | (d) |
Which one of the following is correct for the truth value of (p ∧ q) → ¬p
Choose the correct alternative:
The dual of ¬(p v q) v [p v(p ∧ ¬r)] is
