The original version of this story appeared in Quanta Magazine. A new proof has brought mathematicians one step closer to understanding the hidden order of those “atoms of arithmetic,” the prime ...
The syntax for counting the number of unique values from a list of a column using the array formula is as follows: =SUM(IF(COUNTIF(<first cell from which you count the number of unique values>:<last ...
This calculation can be useful, for example, if you are deciding on the number of sportspersons selected (or rejected) for an event or the number of products approved selected or rejected for export.
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