SUMPRODUCT(...)
How to sum every nth column in excel.
Used Functions
Category: Math and trigonometry
Returns the sum of the products of corresponding array components
Syntax
SUMPRODUCT(array1, [array2], [array3], ...)
Practice SUMPRODUCT Formula at Sheetzoom
SUMPRODUCT formula at Microsoft help
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We will use SUMPRODUCT () to check in header row for the given column value and the formula will sum up the values from the corresponding column.