Do you know why it's important to know what IE version you're using?
Knowing what version number of Internet Explorer you have is helpful so you don't waste your time updating if you don't need to.
Starting January 12, 2016, only the current version of Internet Explorer available for a supported operating system receives technical support and security updates.
Microsoft recommends that customers running older versions of Internet Explorer upgrade to the most recent version, which is Internet Explorer 11 on Windows 7.
Only Internet Explorer 11 offers the manageability and backward compatibility that older web app portfolios need. A March 2015 Forrester Consulting study found that nearly half of IT pros surveyed found the upgrade to Internet Explorer 11 was easier than previous browser upgrades.