Answer to Question #259759 in Discrete Mathematics for rtf

Question

What is 7 mod 3?

a) 1 mod 3

b) 2 mod 3

c) 3 mod 3

d) 0 mod 3 

Answer 1

Since $3$ divides $7-1=6$, we conclude that $7\ mod\ 3$ is equal to $1\ mod\ 3.$

Answer: a)