For each numbered statement that is not a premise in each of the formal proofs that follow,

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For each numbered statement that is not a premise in each of the formal proofs that follow, state the rule of inference that justifies it.

1. A ⊃ B
2. B ⊃ C
3. C ⊃ A
4. A ⊃ ~ C
∴ ~ A ⋅ ~ C
5. A ⊃ C
6. (A ⊃ C) ⋅ (C ⊃ A)
7. A ≡ C
8. (A ⋅ C) ꓦ (~ A ⋅ ~ C)
9. ~ A ꓦ ~ C
10. ~ (A ⋅ C)
11. ~ A ⋅ ~ C

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Introduction To Logic

ISBN: 9781138500860

15th Edition

Authors: Irving M. Copi, Carl Cohen, Victor Rodych

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Question Posted: Apr 14, 2023 11:51 PM

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For each numbered statement that is not a premise in each of the formal proofs that follow,

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Introduction To Logic

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