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Given the following two statements : (S1) : (q ∨ p) → (p ↔ ~ q) is a tautology. (S2) : ~ q ∧ (~ p ↔ q) is a fallacy. Then : (1) only (S1) is correct. (2) both (S1) and (S2) are correct. (3) both (S1) and (S2) are not correct. (4) only (S2) is correct. |
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Answer» (3) both (S1) and (S2) are not correct. Let TV(r) denotes truth value of a statement r. Now, if TV(p) = TV(q) = T TV(S1) = F Also, if TV(p) = T & TV(q) = F TV(S2) = T |
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