The NOT function in Excel is a logical function that reverses the value of its argument. If the argument is TRUE, NOT returns FALSE; if the argument is FALSE, NOT returns TRUE. This function is useful in logical operations where you need to reverse a condition.

Syntax:

=NOT(logical)

Parameters:

• logical: A value or expression that can be evaluated to TRUE or FALSE.

Examples:

1. Basic Usage:

   =NOT(TRUE)  // Returns FALSE
   =NOT(FALSE) // Returns TRUE
   

2. Combining with Other Functions:

   =NOT(A1>10) // Returns TRUE if A1 is not greater than 10, otherwise FALSE
   

3. Nested with IF Function:

   =IF(NOT(A1>10), "Not Greater", "Greater")
   // Returns "Not Greater" if A1 is not greater than 10, otherwise "Greater"
   

Tips:

• Use NOT to reverse the result of a logical test.
• Combine NOT with other logical functions like AND, OR for complex conditions.