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  • Which of the following is a tautology ? Option: 1 <img alt="p \rightarrow q \vee q" src="https://learn.careers360.com/latex-image/?p%20%5Crighta

Which of the following is a tautology ? 

Option: 1

p \rightarrow q \vee q


Option: 2

p \rightarrow q \wedge q


Option: 3

[(p\rightarrow q)\Lambda p]\rightarrow q


Option: 4

none of these 


Answers (1)

best_answer

As we have learned

Tautology and Fallacy -

Negation of Tautology is a fallacy and vice versa.

-

 

 

Truth Table
p q p→q (p→q)^p [(p→q)^p]→v
T T T T T
T F F F T
F T T F T
F F T F T

Thus it is tautology  

 

Posted by

Shailly goel

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