Which of the following is not a correct statement?

  • A
    $ \sqrt{3} $ is a prime number.
  • B
    The sun is a star.
  • C
    Mathematics is interesting.
  • D
    $ \sqrt{2} $ is an irrational number.

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The negation of the statement $(p \vee q) \wedge (q \vee (\sim r))$ is

$\sim(\sim p \rightarrow q) \equiv$

The negation of the Boolean expression $x \leftrightarrow \sim y$ is equivalent to

If $q$ is false and $p \wedge q \leftrightarrow r$ is true,then which of the following is a tautology?

The converse of "If $3$ is a prime number,then $3$ is odd." is

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