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

Question

Quizplus · Accepted Answer

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

1 N ⊃ ∼O 2 ∨ \lor ∨ P) ∨ \lor ∨

1 N ⊃ ∼O
2 $\lor$ P) $\lor$