To count errors by sheet in a workbook you can use a formula based on the ISERROR function, with help from INDIRECT and SUMPRODUCT. In the worksheet shown, the formula in cell C5 is: =SUMPRODUCT(--(ISERROR(INDIRECT("'"&B5&"'!A1:F101")))) As the …Read more
The Excel XLOOKUP function is a powerful tool designed to look up a value in one range and return a corresponding value in another range. It supports approximate and exact matching, wildcards, regular expressions (regex), reverse searches, and lookups in vertical or horizontal ranges. XLOOKUP is a …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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