Question 236869
Mod is short for modulus. It's another way of saying remainder. For instance, if I say 10 mod 3, then I'm asking: "what is the remainder of 10 divided by 3?". The answer is 1 (since 10/3=3 remainder 1) which means that 10 mod 3 = 1. As for your problem, you're going to have to post it so we can help you solve it.