The NOT function is one of the logical functions. It is used to check if the logical value you enter is TRUE or FALSE. The function returns TRUE if the argument is FALSE and FALSE if the argument is TRUE.
NOT(logical)
The NOT function has the following argument:
How to apply the NOT function.
There is an argument: logical = A1<100, where A1 is 12. This logical expression is TRUE. So the function returns FALSE.
If we change the A1 value from 12 to 112, the function returns TRUE: