Given the Argument: P ∨ J / ∼(J • ∼

question 327

Multiple Choice

Given the argument: P ∨ J / ∼(J • ∼ P) // J ≡ ∼ P
This argument is:

• A) Invalid; fails in 3^rd line.
• B) Invalid; fails in 2^nd line.
• C) Invalid; fails in 1^st line.
• D) Valid.
• E) Invalid; fails in 4^th line.

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Definitions:

Occurrence

The fact of something happening or the instance of something taking place.

Event

An occurrence or happening, particularly one of significance, often considered for its effects or outcomes in various contexts.

Exclusive

Pertaining to a unique right or privilege held by an entity, preventing others from sharing the same.

Discrete Random Variable

A variable that takes on a countable number of distinct and separate values, often resulting from a counting process.