Yes, 215 is rational.
215 is an odd number.
It is a rational number. It can be written as a fraction.
yes
No. 215 is a composite number
Is 12.05 a rational number or irrational number?
1.96 is a rational number
215 is divisble by 1, 5, 43 and 215.
It is a rational number, as it can be written as a fraction.
Yes, the sum is always rational.
There is no such thing as a number that is both rational and irrational. By definition, every number is either rational or irrational.
As much as, in these days of uncertainty, anything can be anything. As long as the constraints of a rational number are kept to, a rational number will always remain a rational number.