0
RATIONAL , because you can convert it to a RATION (FRACTION).
Method
Let P = 0.272727....
Then
100P = 27.272727....
Subtract
99P = 27 (Note the decimals to infinity subtract to zero.
P = 27/99
Cancel down by '9'
P = 3/11 ( Which is a RATIO/rational).
Since both '3' & '11' are prime numbers this will not cancel down any further.
Hence 3/11 = 0.272727....
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