III. Determine the validity of the following arguments using the long truth-table method. : (Note: Just write "VALID" or "INVALID" on the space provided.) 1. [(L v ~M) - (L→→N)] → (MN) 2. ([C(A-B)]--A) → C 3. [(PQ) (PQ)] → (PQ) 4. [(-P+Q) (QR)] → (PR)

III. Determine the validity of the following arguments using the long truth-table method. : (Note: Just write "VALID" or "INVALID" on the space provided.) 1. [(L v ~M) - (L→→N)] → (MN) 2. ([C(A-B)]--A) → C 3. [(PQ) (PQ)] → (PQ) 4. [(-P+Q) (QR)] → (PR)

Elementary Geometry For College Students, 7e

7th Edition

ISBN:9781337614085

Author:Alexander, Daniel C.; Koeberlein, Geralyn M.

Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.

Chapter2: Parallel Lines

Section2.CT: Test

Problem 3CT: To prove a theorem of the form "If P, then Q" by the indirect method, the first line of the proof...

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Question

What will be the answer for number 4

III. Determine the validity of the following arguments using the long truth-table method.
.) (Note: Just write "VALID" or "INVALID" on the space provided.)
1. [(L v-M) · (L→N)] → (MN)
2. ([C(A B)] -A) → ~C
3. [(PQ) (~P~Q)] → (PvQ)
..
4. [(-P+Q) (QR)] → (PR)

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