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

## Question:

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. **C ⊃ ~ B

∴ A ⊃ ~ C

**3. **~~ B ⊃ ~ C

**4. **B ⊃ ~ C

**5. **A ⊃ ~ C

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**Related Book For**

## Introduction To Logic

**ISBN:** 9781138500860

15th Edition

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