volume_mute

Mark the following statements as tautology or contradiction

publish date: 2022/08/15 12:18:00 GMT+10

volume_mute
  1. (1) transparent A ∨ A'
  2. (2) transparent A ∧ A'
  3. (3) transparent (A → B) ↔ (B′ → A′) 
  4. (4) transparent (A ∨ A′) → (B ∨ B′) 
Please drag and drop the selected option in the right place or type it instead
tautology
contradiction

Correct Answer

(1) tautology
(2) contradiction
(3) tautology
(4) contradiction

Reference

Mathematical Structures for Computer Science, Discrete Mathematics and its Applications, seventh edition

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