To create a data validation rule that allows only letters and numbers (no punctuation, symbols, or spaces), you can use a custom formula based on the FIND, SEQUENCE, and LET functions. In the example shown, the data validation applied to B5:B16 is: …Read more
The Excel FILTER function is used to extract matching values from data based on one or more conditions. The output from FILTER is dynamic. If source data or criteria change, FILTER will return a new set of results. This makes FILTER a flexible way to isolate and inspect data without altering the …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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