<span>A function is a pre-written formula that is built into excel.
There are many functions which are pre-written into excel.
Some examples are the SUM function which adds the values in a given range. The AVERAGE function takes the average of values in a given range, etc.
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You could Factory Reset a computer or you could smash it with a hammer
UGH IKR, LIKE JUST ANSWER THE FRICKIN QUESTION