12. Choose the claim that is false, over arbitrary logical sentences a and ß. (a) The sentence a is valid if and only if True = a. (b) a ► ß if and only if the sentence (a^ß) is unsatisfiable. (c) For any sentence a, False ► a. (d) Sentences a and ß are logically equivalent (that is, a = ß) if and only if the sentence a#ß is valid.
12. Choose the claim that is false, over arbitrary logical sentences a and ß. (a) The sentence a is valid if and only if True = a. (b) a ► ß if and only if the sentence (a^ß) is unsatisfiable. (c) For any sentence a, False ► a. (d) Sentences a and ß are logically equivalent (that is, a = ß) if and only if the sentence a#ß is valid.
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Need the right answer among choices and also an explanation of the answer.

Transcribed Image Text:12. Choose the claim that is false, over arbitrary logical sentences a and ß.
(a) The sentence a is valid if and only if True = a.
(b) a = B if and only if the sentence (a^ß) is unsatisfiable.
(c) For any sentence a, False = a.
(d) Sentences a and ß are logically equivalent (that is, a = B) if and only if the sentence aß is valid.
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