JEE Math Practice Question
Which one of the following is a tautology?
- A.P $$ \wedge $$ (P $$ \vee $$ Q)
- B.P $$ \vee $$ (P $$ \wedge $$ Q)
- C.Q $$ \to $$ (P $$ \wedge $$ (P $$ \to $$ Q))
- D.(P $$ \wedge $$ (P $$ \to $$ Q)) $$ \to $$ Q
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