Solved

1 P ⊃ ∼Q
2 $\lor$ ∼∼Q
3 R ⊃ S
4

Question 51

Multiple Choice

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

A) R
B) S
C) P ⊃ ∼R
D) ∼R
E) P

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