I am doing theses questions and have got stuck.
I have completed questions 1 through
5. However questions 6 onwards I dont know what to do.
Please can you help me with it, and provide explanations so I can understand it?
6) we have k=7 and z=8, k.j=1 (mod8) so 7j = 1 (mod8) then 7j-1 = 0 (mod8), for what j , 7j-1 is divisible... View the full answer