JEE Main 20202 Sep, Evening shiftMathematicsEasyMathematical Reasoning115× since 2008Which of the following is a tautology ?AOption A. (∼p)∧(p∨q)→q\left( { \sim p} \right) \wedge \left( {p \vee q} \right) \to q(∼p)∧(p∨q)→qBOption B. (q→p)∨∼(p→q)\left( {q \to p} \right) \vee \sim \left( {p \to q} \right)(q→p)∨∼(p→q)COption C. (p→q)∧(q→p)\left( {p \to q} \right) \wedge \left( {q \to p} \right)(p→q)∧(q→p)DOption D. (∼q)∨(p∧q)→q\left( { \sim q} \right) \vee \left( {p \wedge q} \right) \to q(∼q)∨(p∧q)→qCheckSkip · show solution
