a) 0,525252... = 52/99
b) 0,666... = 6/9
c) 0,32444... = 292/900
d) 5,241241241... = 5.236/999
e) 0,48121121121... = 48.073/99.900
f) 34,212121... = 3.387/99
g) 5,131131131... = 5.126/999
h) 0,643777... = 5.794/9.000
