Find the component statements of the following compound statement:
$0$ is a positive number or a negative number.

Write the negation of the following statement and check whether the resulting statement is true:
Every natural number is greater than $0.$

Let $p, q, r$ be three statements,then $[p$ $\rightarrow (q$ $\rightarrow r)] \leftrightarrow [(p \wedge q)$ $\rightarrow r]$ is

Identify the quantifier in the following statement and write the negation of the statement.
There exists a number which is equal to its square.

Negation of the Boolean expression $p \Leftrightarrow (q \Rightarrow p)$ is:

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