MS Excel
By default Excel provides 3 worksheets. You need only two of them, how will you delete the third one?

Both of above
Click on Sheet 3 and from Edit menu choose Delete
Right click on Sheet Tab of third sheet and choose Delete from the context menu
None of above

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MS Excel
To save a workbook, you:

Select Edit > Save
Click Save on the Windows Start button
Click the save button on the standard toolbar from the menu
Press Ctrl+ F5

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