The given statement is : If $x$ is prime then $x$ is odd.
Here $p\rightarrow$ $x$ is prime.
$q\rightarrow$ $x$ is odd.
$\Rightarrow\:$ ~$p\rightarrow\:$ $x$ is not prime and
~$q\rightarrow\:$ $x$ is not odd.
$\therefore$ The converse of this statement is:
If $x$ is odd then $x$ is prime. and
The contra positive of this statement is:
If $x$ is not odd then $x$ is not a prime number.