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Determine Whether the Following Symbolized Argument Is Valid or Invalid →\rarr

Question 39

Short Answer

Determine whether the following symbolized argument is valid or invalid.If invalid,provide a counterexample;if valid,construct a deduction.
P →\rarr Q
Q →\rarr R
R →\rarr S
(P →\rarr S) →\rarr (Q →\rarr ~P)
~P/ ∴\therefore ~Q

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