Multiple Choice
1. (∃x) (Ax • Bx) ⊃ (∀x) Dx
2. ∼Da
-Which of the following propositions is an immediate (one-step) consequence in M of the given premises?
A) ∼Dx
B) (∃x) (Ax • Bx) ⊃ ∼(∃x) ∼Dx
C) ∼(∀x) (Ax • Bx) ⊃ (∀x) Dx
D) ∼(∀x) (Ax • Bx) ⊃ ∼(∃x) ∼Dx
E) (Ax • Bx) ⊃ (∀x) Dx
Correct Answer:

Verified
Correct Answer:
Verified
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