1. X ⊃ (∼Y $ \lor $ Z)
2. ∼X ⊃ (Y $ \lor $ Z)
3. ∼Z
-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) X ≡ Z
B) X ≡ ∼Z
C) Z ≡ ∼X
D) X ≡ Y
E) X ≡ ∼Y

Question

Quizplus · Accepted Answer

The Answer of 1. X ⊃ (∼Y $ \lor $ Z)
2. ∼X ⊃ (Y $ \lor $ Z)
3. ∼Z
-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) X ≡ Z
B) X ≡ ∼Z
C) Z ≡ ∼X
D) X ≡ Y
E) X ≡ ∼Y

1 X ⊃ (∼Y ∨ \lor ∨ Z) 2 ∼X ⊃ (Y

1 X ⊃ (∼Y $\lor$ Z)
2 ∼X ⊃ (Y