Log on to Admin Dash board , click on Dash board, Scroll down to bottom of the page, In the footersection we can findthe version of the Wordpress we are currently using
In the dashboard view check under the At a Glance wiget. In this box we van find the current WordPress versin and active theme.
Alternately, simply scroll down to bottom of this page or any page in admin view. There you can see the version at the bottom right corner.
If you want to check your wordpress version, go to the Updates section (Dashboard > Updates) which will show you the current version and any available updates.