Statement 2D
Given the following statement:
[(N ∨ R) ⊃ ∼ R] ≡ R
-Statement 2D is:
A) Consistent.
B) Self-contradictory.
C) Tautologous.
D) Contingent.
E) Logically equivalent.

Question

Quizplus · Accepted Answer

The statement [(N ∨ R) ⊃ ∼ R] ≡ R is self-contradictory because it cannot be true under any interpretation. The left side, [(N ∨ R) ⊃ ∼ R], implies that if N or R is true, then R must be false, which contradicts the right side, R, being true.

Statement 2D Given the Following Statement