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(∀X)[Px ⊃ (∃Y)Qxy] ⊃ [(∃X)Px ⊃ (∃X)(∃y)Qxy]
-Which of the Following

Question 50

Multiple Choice

(∀x) [Px ⊃ (∃y) Qxy] ⊃ [(∃x) Px ⊃ (∃x) (∃y) Qxy]
-Which of the following propositions is also derivable in F?


A) (∀x) [~(∃y) Qxy ⊃ ~Px] ⊃ [(∀x) Px \lor ~(∃x) (∃y) Qxy]
B) (∀x) [Px ⊃ (∃y) Qxy] ⊃ [(∀x) ∼Px \lor (∃x) (∃y) Qxy]
C) (∀x) [~(∃y) Qxy ⊃ ~Px] ⊃ [~(∀x) Px \lor ~(∃x) (∃y) Qxy]
D) (∀x) [~(∃y) Qxy ⊃ ~Px] ⊃ ~[(∀x) Px \lor ~(∃x) (∃y) Qxy]
E) (∀x) [Px ⊃ (∃y) Qxy] ⊃ [(∀x) ∼Px \lor (∃x) (∃y) ~Qxy]

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