When positive integers $$k$$ and $$n$$ are each divided by 9, the remainders are 2 and 5, respectively. If $$k > n$$, what is the remainder when $$k-n$$ is divided by 9?
When positive integers $$k$$ and $$n$$ are each divided by 9, the remainders are 2 and 5, respectively. If $$k > n$$, what is the remainder when $$k-n$$ is divided by 9?