1. G ⊃ (H ⊃ I)
2. ∼(J ⊃ I)
3. ∼G ⊃ ∼J
-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) G ⊃ H
B) ∼G
C) ∼J
D) I
E) G ≡ ∼H

Question

Quizplus · Accepted Answer

The Answer of 1. G ⊃ (H ⊃ I)
2. ∼(J ⊃ I)
3. ∼G ⊃ ∼J
-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) G ⊃ H
B) ∼G
C) ∼J
D) I
E) G ≡ ∼H