May this thread fits on this section. A friend of mine gave me this enigma to do, written in excel but I can?t attach .xls file here.

*Enigma*:

There are 10^20 possibilities of tables (Table1, Table 2, Table 3, Table 4, Table 5,...), with ten rows (row 0,1,2,......9) in each.

Inside each table is numbers 1 to 20, with its position lie on their certain rows.

Here I gave the example tables that have been filled in for 25 tables. By finding the patterns/ formulas, my friend asked me to extend the tables to fill in the blank tables 26,27,28,etc as given after Table 25.

If these tables are using permutation method, then how do you find the formula for its permutation?

Thanks