Ta có :
\(0,0\left(8\right)=\frac{4}{45}\)
\(0,1\left(2\right)=\frac{11}{90}\)
\(0,1\left(23\right)=\frac{61}{495}\)
Ta có:
\(0,0\left(8\right)=0,0\left(1\right).8=\frac{0,\left(1\right)}{10}.8=\frac{1}{90}.8=\frac{8}{90}\)
Tương tự hết!
\(0,1\left(2\right)=0,1+0,0\left(2\right)=\frac{1}{10}+\frac{\frac{2}{9}}{10}=\frac{1}{10}+\frac{1}{45}=\frac{11}{90}\)
0,0(8) = \(\frac{8}{90}\) = \(\frac{4}{45}\)
0,1(2) = \(\frac{12-1}{90}\) = \(\frac{11}{90}\)
0,1(23) = \(\frac{123-1}{990}\) = \(\frac{122}{990}\) = \(\frac{61}{495}\)
0,0(8)= 8/90= 4/45
0,1(2)=11/90
0,1(23)=122/990=61/495
0,0(8) = vô nghĩa
0,1(2) =1/5
0,1(23) =23/10
nhớ cho mk 1 cái like nhoa