That terminating decimal 0.2020020002 is a rational number and is: 2020020002/10000000000 = 1010010001/5000000000
If you mean a non-terminating decimal 0.2020020002.... where each 2 is followed by one more zero than the previous 2 then it is not a rational number.
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Is 12.05 a rational number or irrational number?
1.96 is a rational number
There is no such thing as a number that is both rational and irrational. By definition, every number is either rational or irrational.
Yes, it is.
It is a rational number.