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Yes it can.
In fact, all real fractions are rational. Numbers are said to be rational that are ratios of the whole numbers.
For example:
3/3 = 1 , therefore 1 is rational (and all other whole numbers)
2/3 = .666... , therefore .666... is rational because it is a ratio of 2 to 3.
123512/321235 also rational.
There are some types of numbers, trancendental numbers, for example, for which no ratio exists. We call those numbers irrational.
Famously, the number pi is the ratio between the diameter and circumfrence of a circle. There is no whole number ratio that can represent this relationship. Pi is both transendental and irrational.
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Is 3.9 rational or irrational?
If there are no numbers after the 9 it is rational
Is 21.192 rational or irrational?
21.192 is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.
Is 27 Rational or irrational?
2.7 is rational. Rational numbers are numbers that can be written as a fraction. Irrational Numbers cannot be expressed as a fraction.
Is 1.777. rational or irrational and why?
1.777...(repeating) is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.
Is 3.153 rational?
3.153 is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.
