Philosophy > QUESTIONS & ANSWERS > University of North Carolina - PHILOSOPHY 1010-8017.4 A, SOME OF B (All)
University of North Carolina - PHILOSOPHY 1010-8017.4 A, SOME OF B
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Exercise 7.4A Problem 1 Correct! Argument is invalid! Your abbreviated truth table is correct! Row 1 shows that the premises are all true and the conclusion is false when statement letter A is assi... gned F, B is assigned T, and C is assigned F, so you have shown that the argument is invalid! Your truth table: A B C | A → (B → C) ∴ B → C ------|------------------------ F T F | F T T F F T F F Correct! Argument is invalid! Your abbreviated truth table is correct! Row 1 shows that the premises are all true and the conclusion is false when statement letter E is assigned F and F is assigned T, so you have shown that the argument is invalid! Your truth table: E F | ~(E ↔ F) ∴ ~E ∙ ~F ----|---------------------- F T | T F F T TF F FT Correct! Argument is invalid! Your abbreviated truth table is correct! Row 1 shows that the premises are all true and the conclusion is false when statement letter G is assigned F and H is assigned T, so you have shown that the argument is invalid! Your truth table: G H | ~(G ↔ H) ∴ ~G → ~H ----|----------------------- F T | T F F T TF F FT Correct! Argument is invalid! Your abbreviated truth table is correct! Row 1 shows that the premises are all true and the conclusion is false when statement letter J is assigned F and K is assigned F, so you have shown that the argument is invalid! [Show More]
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