Which one of the following statements is not a tautology?

  • Option 1)

    (p \vee q)\rightarrow (p\vee (-q))

  • Option 2)

    (p\wedge q)\rightarrow (\sim p)\vee q

  • Option 3)

    p\rightarrow (p\vee q)

  • Option 4)

    (p\wedge q)\rightarrow p

 

Answers (1)
V Vakul


Option 1)

(p \vee q)\rightarrow (p\vee (-q))

Option 2)

(p\wedge q)\rightarrow (\sim p)\vee q

Option 3)

p\rightarrow (p\vee q)

Option 4)

(p\wedge q)\rightarrow p

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