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46.7
Explain the difference between a tautology and a contradiction in propositional logic. Provide an example of each.
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Instructor answered
A tautology is a proposition that is always true (e.g., \( p \vee \neg p \)), while a contradiction is always false (e.g., \( p \wedge \neg p \)).
You answered
Tautology: always true (e.g., p ∨ ¬p). Contradiction: always false (e.g., p ∧ ¬p).

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Class Outline

  • 6
    units
  • 6
    adaptive reviews
Basic Notions and Propositional Logic
  • Basic Notions and Propositional Logic
  • Set Theory
  • Relations and Functions
  • Quantification
  • Graph Theory
  • Counting and Probability
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46.7
Explain the difference between permutations and combinations, and provide an example of each.
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52.8
Write a function to multiply two input parameters, a and b.
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def product_of_two(a, b):  # Your code here!

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