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Which file extension is used for spreadsheet files in Microsoft Excel?

  1. .docx
  2. .xlsx
  3. .pptx
  4. .pdf

Answer: .xlsx

.xlsx is the default extension for Excel workbooks (XML-based format introduced in Office 2007). Older .xls format is binary. Other extensions: .docx (Word), .pptx (PowerPoint), .pdf (portable document). File extensions help OS identify appropriate applications for opening files.

Topic Computer Fundamentals
Exam Relevance All Government Exams

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