\(A=\frac{100^{2016}+8}{9}=\frac{100....0\left(4032\text{ số }0\right)+8}{9}\)
\(=\frac{999....9\left(4032\text{ số }9\right)+9}{9}=111...1\left(4032\text{ số }1\right)+1=111...12\left(4031\text{ số }1\right)\)
Vậy A là số tự nhiên
\(A=\dfrac{100^{2016}+8}{9}=\dfrac{100...00\left(4032số0\right)}{9}\)
\(=\dfrac{999...99\left(4032số9\right)+9}{9}=111...1\left(4032số1\right)+1\)\(=111...12\left(4031số1\right)\)
\(\Rightarrow Alà\:sốtựnhiên\)