Question 183721
12.5555...
2.1273685...
548/799

A rational number is any number that can be put into the form of a fraction.
1) is rational because a repeating decimal shows that it is a fraction as 1/9=.111111111...
.
2) is irrationl non repeating decimal that goes on infinitely (the ... at the end)
.
3) obviously rational
.
Ed