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Decide Whether the argument below is valid or not. If it is valid identify the rule of inference which justify its validity. Otherwise, state a counterexample or identify the type of fallacy exhibited by the argument. "if quadrilateral ABCD is a square, then it is also a rectangle. Quadrilateral ABCD is not a rectangle. Therefore, it is not a square."

Decide Whether the argument below is valid or not. If it is valid identify the rule of inference which justify its validity. Otherwise, state a counterexample or identify the type of fallacy exhibited by the argument. "if quadrilateral ABCD is a square, then it is also a rectangle. Quadrilateral ABCD is not a rectangle. Therefore, it is not a square."

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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4. Decide Whether the argument below is valid or not. If it is valid identify the rule of inference which justify its validity. Otherwise, state a counterexample or identify the type of fallacy exhibited by the argument. "if quadrilateral ABCD is a square, then it is also a rectangle. Quadrilateral ABCD is not a rectangle. Therefore, it is not a square." 5. Determine whether the argument is valid and sound. "Ifn is a real number with n >3, then n' > 9. Suppose n · 3. Then n' . 9." F F T T T F F T Therefore (p→ q) ^ (g → p) and p - q are equivalent
Transcribed Image Text:4. Decide Whether the argument below is valid or not. If it is valid identify the rule of inference which justify its validity. Otherwise, state a counterexample or identify the type of fallacy exhibited by the argument. "if quadrilateral ABCD is a square, then it is also a rectangle. Quadrilateral ABCD is not a rectangle. Therefore, it is not a square." 5. Determine whether the argument is valid and sound. "Ifn is a real number with n >3, then n' > 9. Suppose n · 3. Then n' . 9." F F T T T F F T Therefore (p→ q) ^ (g → p) and p - q are equivalent
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