There is a web page on Adobe’s web site that will display the current version of the Flash Player that you have installed for a certain browser. Use the below URL to see the current version of Flash followed by the latest versions of Flash located at the bottom of the web page.
Current Flash Player Version: Click Here
Please be aware that there are different versions of the Flash Player for Windows based on your browser. If you have the newest version installed for Internet Explorer then it does not mean that you have the latest version installed for FireFox. Safari, Opera, and FireFox do all use the same version of the Flash Player but Internet Explorer is a different plugin so keep that in mind if you are seeing something different between browsers.
The same is true for Macintosh in a different way. There are different versions of Flash Player for OS X PowerPC and OS X Intel.