Tuesday 10/15

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

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 {1,3,5,7,9,11,15,17,19,21,23,25} but not in that order. We discovered in class that 21*5 = 1 mod 26 and 5*21 = 1 mod 26