In the example shown, the formula in F6 is: We take advantage of this by using the ISNA function to test for any #N/A errors. After ISNA, we have: We use the double negative (double unary) operator to convert TRUE FALSE values to ones and zeros, which gives us this: SUMPRODUCT then sums the elements in the array, and the result is compared to zero for force a TRUE or FALSE result.

Dave Bruns

Hi - I’m Dave Bruns, and I run Exceljet with my wife, Lisa. Our goal is to help you work faster in Excel. We create short videos, and clear examples of formulas, functions, pivot tables, conditional formatting, and charts.