The positive three-digit integer $N$ has a ones digit of $0$. What is the probability that $N$ is divisible by $4$? Express your answer as a

The positive three-digit integer $N$ has a ones digit of $0$. What is the probability that $N$ is divisible by $4$? Express your answer as a common

 

well if the units digit is 0 then the tens one has to be even     

the hundred digit is of no consequence.

SO  that is  5/10 or 1/2