Textbook exercises 5.docx - Textbook exercises 5.2 and 5.3...

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Textbook exercises 5.2 and 5.3 Name Course Tutor Date
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A(i) This is an invalid argument, it does not allow for contradiction by those opposed to the war and those with a different opinion. It is random as only one possibility is given in terms of the war (ii) This argument is valid, a reason is given to justify the conclusion. The similarities are sufficient, comparisons are also relevant. (iii) Valid. Objective, random and an appropriate piece. The conclusion is also a stretch. B(i) This is a sufficient condition. Because being born in USA is sufficient for citizenship but it can also be obtained through naturalization. (ii) The condition is sufficient. Attacking another country without UN authorization is a violation of the international laws but not the only way these laws can be violated hence sufficient but not necessary. C(i) 1. (P A) ˄ D
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2. A 3. D (R ¬N) ˄ 4. P ¬N 5. P A ˄ 2, 4 Con 6. D 1, 5 MP 7. R ¬N ˄ 3, 6 MP 8. ¬N 7, Si (ii) 1. P ¬L 2. M L 3. E
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