Question

which is open office calc extension​

Answer 1

Explanation:

The default file format for OpenOffice Calc version 2. x or 3. x can be set to either Microsoft Excel's native file format or the Open Document Format (ODF). Calc also supports a wide range of other file formats, for both opening and saving files.

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Answer 2

Answer:

Calc is the spreadsheet component of OpenOffice.org (OOo). You can enter data (usually numerical) in a spreadsheet and then manipulate this data to produce certain results.