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.

Smash the hash in a flash!To do this, you'll need to use the COUNTIF function. However, because you want Excel to count all the animals returned by the UNIQUE function in column D—even if ...

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 ...