You'll find in it following code:
/**
 * The WordPress version string
 *
 * @global string $wp_version
 */
$wp_version = '4.7.5';
which clearly reports the WordPress version is installed.
If you have no access to WordPress backend, you can check which WordPress version is used following way:
- open any page of the site you're investigating in your browser
- show its source code
- look for following line of code:
 <meta name="generator" content="WordPress 4.7.5" />
 
					 
					 
					 
					 
					 
					
 
					 
					
