4.6 is rational.
Rational
10.01 is a rational number
It is a rational number
Rational
No
rational
Rational
If x is rational the it is rational. If x is irrational then it is irrational.
Rational. Rational. Rational. Rational.
No, they are disjoint sets: no rational is irrational and no irrational is rational.
No. A rational plus an irrational is always an irrational.