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All of the Following Are Well-Formed Formulas of Predicate Logic

Question 94

Multiple Choice

All of the following are well-formed formulas of predicate logic except

A) (y) (Ay ⋁ ($y) By)
B) ((y) Ay ⋁ ($y) By)
C) (y) (x) (Ay ⋁ Bx)
D) Ay ⋁ Bx

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