solution: \begin{align*}
  \dbinom{31}{28} &= \dbinom{31}{3} \\
  &= \dfrac{31!}{28!3!} \\
  &= \dfrac{31\times 30\times 29}{3\times 2\times 1} \\
  &= 31 \times \dfrac{30}{3\times 2\times 1} \times 29 \\
  &= 31\times 5\times 29 \\
  &= \boxed{4495}.
  \end{align*}
prompt.content: <|im_start|>system
  You are a helpful assistant.<|im_end|>
  <|im_start|>user
  Compute $\dbinom{31}{28}$.
  Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
  <|im_start|>assistant
  
prompt.role: user
extra_info.answer: 4495
extra_info.question: Compute $\dbinom{31}{28}$.
extra_info.split: test