The digits 1, 3 and 5 are each used once to form each of the possible three-digit positive integers. The three-digit integers are listed from greatest to least. Which integer is listed fifth?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
The digits 1, 3 and 5 are each used once to form each of the possible three-digit positive integers. The three-digit integers are listed from greatest to least. Which integer is listed fifth?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
153
The digits 1, 3 and 5 are each used once to form each of the possible three-digit positive integers. The three-digit integers are listed from greatest to least. Which integer is listed fifth?
train