Return a value for finding range of cells in another range of cells

Hi everybody.

I'm doing an assignment for my work and have come to a problem I don't know how to solve.

I have a table where the first row contains a number of the column and under that number there are 8 digits in another 8 rows (code for binary digits). Every next column containes the next code for binary digits (again in 8 rows). Under the data, I have another column with 8 rows, where I will randomly input the combination of binary code digits and would in the end like that Excel returns the number of the column from upper (main) table. Thus finding a range of cells in another range of cells.

I'm attaching the Excel file to help with the "imaging" of the problem.

Could this be done with INDEX + something else, or will I need programming?

Should there be any additional questions or misunderstanding about my wishes, please don't hesitate to ask.

Thank you for your help in advance.

Hello Ron and Marvin.

The last solution you provided Marvin, using only Match function, worked like a charm. In the process I also learned a new function Decimal, therefore win win situation.

Thank you guys. I'm definitely coming back, should there be some new problems.

Best regards, MArko.