A .xlsx file tells you that the file is an Excel workbook that utilizes XML files to create the various spreadsheets as well as macros and other hidden codes used to perform certain functions (which is why there's an X at the end; older .xls files had no indication of this external code being present, which is why they're almost never recommended for modern use).
The answer is <span>Unified Communications. </span><span>You step out of your office and miss a telephone call. when you sit at your desk you notice that the voicemail light is blinking on your phone, you have a new email, and you have a transcribed instant message on your computer screen in the form of an instant message. your organization has most likely adopted Unified Communications type of technology. </span>
5 is one bigger than 4, so it is 101
Note: this doesn't always work for every number.
the binary numbers 1-8 would be: 1, 10, 11, 100, 101, 110, 111, 1000
Can you guess 9?: 1001
10?: 1010
Hope this helps, <span>and May the Force Be With You!
-Jabba
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