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PHLA_Assignment_01.docx

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Department
Philosophy
Course
PHLA10H3
Professor
William Seager
Semester
Fall

Description
Page 17 (Q1 – 7 Odd Numbers) Q1. In everyday life, we say that a statement is valid if it is plausible or true. But we never say that a statement or an idea is valid or invalid. Validity is a property of arguments and of arguments only Q3. The Chief Executive of the Hong Kong SAR must be 35 years of age or older. Donald Tsang is the Chief Executive of the Hong Kong SAR. So, Donald Tsang must be 35 years of age or older. (A valid argument that has false premises, and a true conclusion) The Chief Executive of the Hong Kong SAR must be 35 years of age or older. Donald Tsang must be 35 years of age or older. So, Donald Tsang is the Chief Executive of the Hong Kong SAR. (An invalid argument that has false premises, and a true conclusion) Q5. A) If P, then Q All female birds can lay eggs All hens can lay eggs This is valid B) If P, then Q All hens can lay eggs All female birds can lay eggs This is invalid, with true premises and false conclusion C) If not P, then not Q All male birds cannot lay eggs All roosters cannot lay eggs This is
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