JEE Main 20208 Jan, Morning shiftMathematicsHardMathematical Reasoning115× since 2008Which one of the following is a tautology?AOption A. P ∧\wedge∧ (P ∨\vee∨ Q)BOption B. P ∨\vee∨ (P ∧\wedge∧ Q)COption C. Q →\to→ (P ∧\wedge∧ (P →\to→ Q))DOption D. (P ∧\wedge∧ (P →\to→ Q)) →\to→ QCheckSkip · show solution
