Tuesday October 9

Today we continued to look at mod math to get us ready to work on our project which we will start tomorrow.

Your job tonight is to solve the following equations mod 26
1x = 1
3x = 1
5x = 1
7x = 1
9x = 1
11x = 1
15x = 1
17x = 1
19x = 1
21x = 1
23x = 1
25x = 1

I gave you a hint and some solutions. The solutions are {1,3,5,7,9,11,13,15,17,19,21,23,25} but not in that order. We discovered in class that 21*5 = 1 mod 26 and 5*21 = 1 mod 26