\(\huge\color{red}{\textbf{elim喷粪：自然数皆有限数}}\)

APB先生

      有限自然数皆有限数如\(\left\{ 1{,}2{,}\cdots{,}n\right\}\)，无限自然数皆无限数如\(\left\{ \cdots{,}\ \dot{9}{,}\ 1\dot{0}{,}\ 1\dot{0}+1{,}\ \cdots\cdots{,}\ \right\}\)