equivalence

The statement $(\neg p) \Rightarrow(\neg q)$ is logically equivalent to which of the statements below? I. $\quad p \Rightarrow q$ II. $q \Rightarrow p$ III. $(\neg q) \vee p$ IV. $...

Consider the following statements: P: Good mobile phones are not cheap Q: Cheap mobile phones are not good L: P implies Q M: Q implies P N: P is equivalent to Q Which of the follow...

Which one of the following is FALSE?

Which one of the following is false? Read $$ \wedge $$ as AND, $$ \vee $$ as OR, $$ \sim $$ as NOT, $$ \to $$ as one way implication and $$ \leftrightarrow $$ two way implication.

Which two of the following four regular expressions are equivalent? (i) $${\left( {00} \right)^ * }\left( {\varepsilon + 0} \right)$$ (ii) $${\left( {00} \right)^ * }$$ (iii) $${0^...