## Thinking Mathematically (6th Edition)

The contrapositive of $p\rightarrow q$ is $\sim q\rightarrow \sim p$. The converse of $p\rightarrow q$ is $q \rightarrow p$. The inverse of $p\rightarrow q$ is $\sim p\rightarrow \sim q$. Hence here the converse is: $\sim q\rightarrow \sim p.$ The inverse: $p\rightarrow q.$ The contrapositive: $q\rightarrow p.$