1 J ⊃ (K ⊃ M)
2 $\lor$ ∼M
3 J

question 253

Multiple Choice

1. J ⊃ (K ⊃ M)
2. L $\lor$ ∼M
3. J $\lor$ (K • ∼L)
-Which of the following propositions is derivable from the given premises using any of the twenty-five rules of PL and either the direct or conditional methods of proof?

• A) J ≡ K
• B) J ≡ (K ⊃ L)
• C) J ≡ L
• D) J ≡ M
• E) J ≡ (M ⊃ L)

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