## Thinking Mathematically (6th Edition)

The contrapositive of $p\rightarrow q$ is $\sim q\rightarrow p$. The converse of $p\rightarrow q$ is $q \rightarrow p$. The inverse of $p\rightarrow q$ is $\sim p\rightarrow q$. Hence here the converse is: If it is not an apple, then it is blue. The inverse: If it is not blue, then it is an apple. The contrapositive: If it is an apple then it is not blue.