Open your spreadsheet in Microsoft Excel and look at the numbers list. You need to determine the range of numbers you wish to consider. This range might be based on the lowest and highest values ...

If you apply this formula to a number, it will remove leading and trailing spaces but limit the in-between spaces to 1. For removing all the spaces from numbers, you may use the next two methods.

So the serial number 1 in Windows Excel equals 1/1/1900, 12:00 am, while in Mac Excel it’s 1/2/1904, 12:00 am. Seems like Microsoft should have fixed this by now, but it’s still a problem.

Apple Numbers 2009 has 262 functions in 10 categories. Microsoft Excel 2010 has 400 functions in 11 categories.