Hi, i'm taking calculus this sem, and i have a question on stuff pre calculus. If x and y are natural numbers and y[less-than]x, then whole numbers q and r must exist such that x=yq+r. a)what is the value of r if y is a factor of x? IT IS ZERO b)If y is not a factor of x, what are the possible values of r if y=5 , y=7, or y=n??? I dont get b), can anyone help me plz. THANK YOU.