The AND function can be useful when combined with other functions like IF. The simple way to think about the AND function is that you pass one or more arguments (logical tests or conditions) to the function and if all of the arguments evaluate to TRUE, then the AND function returns TRUE. If any one of the conditions evaluate to FALSE, then the AND function returns FALSE. So, it's an all or nothing logical test that can compare up to 255 conditions.

AND takes 1 required argument and 254 optional arguments:

Syntax: AND(logical1, [logical2], ... )

#1)
Using the AND function:
#2)
The arguments for the AND function are:
Argument Required? Description
logical1 Required The first condition that you want to test that can evaluate to either TRUE or FALSE.
logical2, ... Optional Additional conditions that you want to test that can evaluate to either TRUE or FALSE, up to a maximum of 255 conditions.

Summary

The AND function is an all or nothing logical test that can test up to 255 conditions to see if all of the conditions are true. It can be very useful.
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