Which of the following is not a required argument for the VLookup function?

The VLOOKUP function in Excel is used to search for a value in the first column of a specified range (table_array) and return a value in the same row from a specified column (col_index_num).

The lookup_value is essential because it specifies the value you want to search for in the first column of the table_array. The table_array is also required as it defines the range where the function will look for the lookup_value. The col_index_num is crucial as it indicates which column's value from the table_array will be returned.

On the other hand, the match_type argument is optional. When you do not specify match_type, Excel defaults to an approximate match (TRUE), meaning it will return a value that is closest to the lookup_value without exceeding it, provided that the first column of your table_array is sorted in ascending order. Thus, not defining match_type allows for flexible use of the VLOOKUP function, especially in situations where an approximate match is acceptable.