Question: Use a spreadsheet, programmable calculator or computer to find all numbers a different from 1 and -1 mod 33 = 32 with a32 mod 33 = 1. (This problem is relatively straightforward to do with a spreadsheet that can compute mods and will let you "fill in" rows and columns with formulas. However you do have to know how to use the spreadsheet in this way to make it strightforward!)