If $p$ and $q$ are true statements and $r$ is a false statement,then which of the following is correct?

  • A
    $(p \vee q) \vee r$ has truth value $F$.
  • B
    $(p \wedge q) \rightarrow r$ has truth value $T$.
  • C
    $(p$ $\rightarrow r)$ $\rightarrow q$ has truth value $F$.
  • D
    $(p \leftrightarrow q) \rightarrow r$ has truth value $F$.

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Consider the following statements:
Statement $I$: If a quadrilateral $ABCD$ is a square,then all of its sides are equal.
Statement $II$: If all the sides of a quadrilateral $ABCD$ are equal,then $ABCD$ is a square.
Then:

If ${(p \wedge \sim q) \wedge (p \wedge r)} \rightarrow (\sim p \vee q)$ has a truth value of $False$,then the truth values of the statements $p, q, r$ are respectively:

The negation of the statement "For every real number $x$,$x^2+5$ is positive" is

The expression $(p \wedge \sim q) \vee q \vee (\sim p \wedge q)$ is equivalent to

The negation of the statement $p \rightarrow (q \wedge r)$ is equal to .........

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