[(∀X)Pax • ∼(∃X)Pxa] ⊃ (∀X)(Pax • ∼Pxa)

question 182

Multiple Choice

[(∀x) Pax • ∼(∃x) Pxa] ⊃ (∀x) (Pax • ∼Pxa)
-Consider assuming '(∀x) Pax • ∼(∃x) Pxa' for a conditional proof of the above logical truth. Which of the
Following propositions is a legitimate second step in that proof?

• A) Assume '(∀x)Pax' for a nested indirect proof.
• B) Assume ~(∀x)Pax' for a nested indirect proof.
• C) ~(∃x)Pxa
• D) (∀x)~Pxa
• E) ∼(∃x)Pxa • (∀x)Pax

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Definitions:

Valid

A concept that refers to the accuracy and reliability of data or findings, ensuring they measure what they are supposed to.

Test Administrations

The process or manner in which exams or assessments are given to evaluate participants' knowledge, skills, or abilities.

Reliable

Describes something dependable and consistent in quality or performance.

Clinical Trials

Research studies performed in people that are aimed at evaluating a medical, surgical, or behavioral intervention.