Initially it may treat them as numbers, but ideally they should be treated as text. This is because they are not like ordinary numbers as they may start with zero or have other characters in them or have spaces in them. Also, you will never want to do any calculations with them, so they do not need to be treated as ordinary numbers. For example, you would never multiply one phone number by another number. To ensure they are treated as text, you can format them to the Text format or put a single quote before them like this:
'0001556
A computer treats all characters the same. Applications that run on the computer, like MS Excel, may treat text and numbers differently.
Excel right aligns dates within a worksheet because it treats dates as numbers.
Rows are identified by numbers in Excel.
Yes. Excel can display numbers as percentages. Do you have a question?
The general opinion is that Excel is better than Numbers.
Depending on what you mean, it could be a range, which is a group of cells in Excel, that can be referenced in a formula as a block, but they are not a single cell then. You could be referring to cells that have been merged, in which case Excel treats them as a single cell.
65,536! 1,048,576 with Excel 2007
text and numbers
Numbers, Agriculture
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No. Dates and times are stored as numbers in Excel.
Revenue is how much is earned, like in a business. As Excel deals with numbers, then calculating revenue is something that is regularly done in Excel.