jee-main 2015 Q88

jee-main · India · 10apr Proof Direct Proof of a Stated Identity or Equality

The negation of $\sim s \vee (\sim r \wedge s)$ is equivalent to:
(1) $s \wedge \sim r$
(2) $s \wedge (r \wedge \sim s)$
(3) $s \vee (r \vee \sim s)$
(4) $s \wedge r$

The negation of $\sim s \vee (\sim r \wedge s)$ is equivalent to:\\
(1) $s \wedge \sim r$\\
(2) $s \wedge (r \wedge \sim s)$\\
(3) $s \vee (r \vee \sim s)$\\
(4) $s \wedge r$

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