Answer :

AL2006
There are an infinite number of them. Here are a few: 1.09 1.1 1.2 1.22000001 1.3 1.409 1.567 1.62813 1.7081824 1.79 1.799 1.79900001 1.79900002 . . etc. Any number that you can write down completely on paper using digits is rational.

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