1. (U • Y) ⊃ Z

question 267

Multiple Choice

1. (U • Y) ⊃ Z
2. ∼Z
-Consider assuming 'Y' for conditional proof. Which of the following propositions is an immediate (one-step) consequence in PL of the given premises with that further assumption for conditional proof?

• A) ∼(U • Y)
• B) (Y • U) ⊃ Z
• C) Y • ∼Z
• D) All of the above
• E) None of the above

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