The negation of the Boolean expression $ \sim \,s\, \vee \,\left( { \sim \,r\, \wedge \,s} \right)$ is equivalent to
$s\, \vee r$
$ \sim \,s\, \wedge \, \sim \,r$
$r$
$s\, \wedge r$
The converse of the statement $((\sim p) \wedge q) \Rightarrow r$ is
Contrapositive of the statement “If two numbers are not equal, then their squares are not equals” is
For any two statements $p$ and $q,$ the negation of the expression $p \vee ( \sim p\, \wedge \,q)$ is
Which statement given below is tautology ?
Which of the following statement is a tautology?