A compound proposition that is always true, no matter what the truth values of the propositions that occur in it is called?
Lecturer Mathematics Past Papers and Syllabus / All — Multiple-choice practice
ایک کمپاؤنڈ تجویز جو ہمیشہ سچ ہے ، اس سے قطع نظر کہ اس میں پیش آنے والی تجویزات کی سچائی کی قدر کہا جاتا ہے؟
- A. Equivalence
- B. Contingency
- C. Tautology
- D. None of these
Correct answer
Tautology
Explanation
Explanation A compound proposition that is always true, regardless of the truth values of its components, is called a tautology . The statement " P ∨ ¬P " (P or not P) is a tautology because it is always true, whether P is true or false.
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