<|im_start|>system
You are a helpful assistant. You first think about the reasoning process in the mind and then provide the user with the answer. You should try to truely solve the question by yourself without cheating.  <|im_end|>
<|im_start|>user
 Little Ming has 10 math problems to complete in ascending order of their serial numbers. He must complete at least one problem per day, but he can complete more than one problem per day or even finish all of them in one day. Calculate the total number of different ways Little Ming can complete the problems. Show your work in <think> </think> tags. And return the final answer in <answer> </answer> tags.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>
user
512
Little Ming has 10 math problems to complete in ascending order of their serial numbers. He must complete at least one problem per day, but he can complete more than one problem per day or even finish all of them in one day. Calculate the total number of different ways Little Ming can complete the problems.
test