Write the negation of the following statement:
All triangles are not equilateral triangles.

Write the contrapositive of the following statement:
If a triangle is equilateral,it is isosceles.

If the truth value of the expression $[(p \vee q) \wedge (q$ $\rightarrow r) \wedge (\sim r)]$ $\rightarrow (p \wedge q)$ is False,then the truth values of $p, q, r$ are respectively:

The statement pattern $[(p \vee q) \wedge \sim p] \wedge (\sim q)$ is

Consider
Statement-$1$: $(p \wedge \sim q) \wedge (\sim p \wedge q)$ is a fallacy.
Statement-$2$: $(p \rightarrow q) \leftrightarrow (\sim q \rightarrow \sim p)$ is a tautology.

Which of the following is not a statement?