To test for strong passwords, you can use a formula based on the REGEXTEST function. In the worksheet shown, the formula in cell D5, copied down, is: =REGEXTEST(B5,"^(?=.*[A-Z])(?=.*[a-z])(?=.*\d)(?=.*[^\w\s])[^\s]{8,15}$") On each row, the formula …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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