It is real, rational but not the others.
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3.5 is real, rational, and natural. It's not irrational, integer, or whole.
It can be written as a fraction, so it is rational. It is not an integer, whole number or irrational.
It is Real, Rational, Integer, Whole and Counting but not Irrational
real and rational
Since pi is an irrational number, then 3pi will be an irrational also.