Rational, because it can be converted to a fraction .
Let
P = 0,353535....&
100P = 35.353535...
Subtract
99P = 35.0
P = 35/99 This will not reduce any further.
NB An IRRATIONAL number can be casually thought of as a decimal were the digits go to infinity , and there is no regular order in the digits.
pi = 3.141592... is probably the most well known irrational number.
Other irrational; numbers being the square root of prime numbers.
e.g.
sqrt(2) = 1.414213562....
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