jee-main 2021 Q68

jee-main · India · session4_31aug_shift1 Not Maths

Let ${ } ^ { * } , \square \in \{ \wedge , \vee \}$ be such that the Boolean expression $\left( p ^ { * } \sim q \right) \Rightarrow ( p \square q )$ is a tautology. Then :
(1) ${ } ^ { * } = \vee , \square = \wedge$
(2) $* = \vee , \square = \vee$
(3) ${ } ^ { * } = \wedge , \square = \vee$
(4) ${ } ^ { * } = \wedge , \square = \wedge$

Let ${ } ^ { * } , \square \in \{ \wedge , \vee \}$ be such that the Boolean expression $\left( p ^ { * } \sim q \right) \Rightarrow ( p \square q )$ is a tautology. Then :\\
(1) ${ } ^ { * } = \vee , \square = \wedge$\\
(2) $* = \vee , \square = \vee$\\
(3) ${ } ^ { * } = \wedge , \square = \vee$\\
(4) ${ } ^ { * } = \wedge , \square = \wedge$

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