The three-digit number "$ab5$'' is divisible by 3. How many different three-digit numbers can "$ab5$'' represent?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
The three-digit number "$ab5$'' is divisible by 3. How many different three-digit numbers can "$ab5$'' represent?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
30
The three-digit number "$ab5$'' is divisible by 3. How many different three-digit numbers can "$ab5$'' represent?
train