21 is a rational number.
irrational
It is equal to 21/2 which is a rational number
21/3 is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.
10.01 is a rational number
It is rational because it can be expressed as a fraction which is 21/5
Rational
It is a rational number.
No. The square root of an integer is either an integer, or an irrational number.
is 34.54 and irrational or rational. number
Irrational.
it is a rational number but 4.121314..... is an irrational no
Such a product is always irrational - unless the rational number happens to be zero.