About COUNTIF () There’s no built-in duplicate rule for Excel’s Data Validation feature, but you can combine the feature with the COUNTIF () function to get the job done.

Excel logical formulas: 12 simple IF statements to get started Learn the ins and outs of the logical formulas like the famous IF Statements that represent the heart of Excel.

How to Write an If/Otherwise Statement in Excel. Each IF function in an Excel spreadsheet returns one of two messages. The first -- the "if" message -- displays if cells meet criteria that you ...

The Excel functions for generating random numbers are RAND, RANDBETWEEN, and RANDARRAY. Generating random numbers in Excel is as easy as typing in the appropriate function, adding parameters (if ...