File Extensions Quiz

Let's face it, even your grandmother knows her DOC from her XLS. So let's skip the real easy ones and test your knowledge of some popular applications, with less-commonly known file extensions.

These days, most apps open many different kinds of files, and allow you to save your work in different formats. So your job here is to ID the one extension of the four that's most commonly associated with the application mentioned.

Question 1 of 10
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