0.161616... = 16/99 which cannot be simplified.
16/99
0.2 a repeating decimal into a fraction = 2/9
0.6666 repeating = 2/3
0.999 repeating = 1 (the integer).
sexx
Just have a go.
It is 2/3.
56/99
If you convert repeating decimals into a fraction, you see that the repeating decimals are rational.
123/999
998/999
998/999
0.555555555... = 5/9