To count the number of birthdays in a list, by month, you can use a formula based on the SUMPRODUCT and MONTH functions. In the example shown, E5 contains this formula: =SUMPRODUCT(--(MONTH(birthdays)=MONTH(D5&1))) where birthdays is the named range …Read more
The Excel PIVOTBY function is designed to summarize data by grouping rows and columns. The result is a dynamic summary table created with a single formula.Read more
Combinations and permutations are two basic ways to count possibilities, used in probability, statistics, games, passwords, and lotteries. This article explains the difference between them, when order and repetition matter, and the Excel functions you can use to calculate each case: FACT, PERMUT, …Read more
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