I have a requirement in which I want to compute if a 'Amount' for a particular 'Group' is washed out (nullified) or not. I tried to use tiles and joins to create a solution; but still not able to arrive at something robust. As an output, I basically would like to compute a 'Wash Sale?' column as shown in the attached spreadsheet with values like Yes/No.
Please refer the attached spreadsheet for an actual example. It would be great if someone could help me out.