@tul
How to make average of two strings? like "AAA" & "CCC" ... good question!
Syntax: AVERAGE(number1, [number2], ...)
The AVERAGE function syntax has the following arguments: Number1 Required. The first number, cell reference, or range for which you want the average. Number2, ... Optional. Additional numbers, cell references or ranges for which you want the average, up to a maximum of 255. Check this...