1. (A $ \lor $ B) ⊃ ∼C
2. C $ \lor $ D
3. E • A
4. F
-Which of the following propositions is an immediate (one-step) consequence in PL of the given premises?
A) D • C
B) ∼F
C) ∼C ⊃ (A $ \lor $ B)
D) ∼E
E) E

Question

Quizplus · Accepted Answer

The Answer of 1. (A $ \lor $ B) ⊃ ∼C
2. C $ \lor $ D
3. E • A
4. F
-Which of the following propositions is an immediate (one-step) consequence in PL of the given premises?
A) D • C
B) ∼F
C) ∼C ⊃ (A $ \lor $ B)
D) ∼E
E) E

1 (A ∨ \lor ∨ B) ⊃ ∼C 2 ∨ \lor ∨

1 (A $\lor$ B) ⊃ ∼C
2 $\lor$