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It is always rational.

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Q: How do you know if a whole number is rational or irrational?
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How do you know if a number rational or irrational?

If it can be expressed as a ratio of two integers, p and q (q not 0) then it is rational. Except in some trivial cases, it is not easy to know if a number is not rational - and is therefore irrational.


Can the square of an irrational number be rational?

The answer to this question confuses me. The square root of two is an irrational number, so obviously if the square root of two is squared it becomes two which is a rational number. Thinking of it that way then the answer is yes, the square of an irrational number can be a rational number. But . . . You had to know beforehand that the irrational number was the square root of another number. If you start out with an irrational number such as Pi you cannot square it because you cannot know the entire number in order to square it.


Is 1.1 rational or irrational?

Rational!!!! Casually, any decimal that can be converted to a fraction/ratio is Rational. 1.1 = 1 1/10 = 11/10 Irrational numbers are those that cannot be converted to a fraction/ration. The most well known IRRATIONAL number is 'pi = 3.141592....' Irrational numbers are those were the decimals go to infinity AND the decimal digits are not in any regular order. Rational ; 1/3 = 0.3333.... Irrational ; sqrt(2) = 1.414213562....


Is pi an irrational or rational number How do you know?

Pi is an irrational number. Johann Heinrich Lambert proved that in the late 18th Century.


How do you know if a square root is rational or irrational?

For a start, the square root of any integer is either an integer, or an irrational number.

Related questions

Is a mixed number a rational or irrational number?

If you can write the whole thing down on paper with digits, then it's rational.


Is 0.39 a rational or irrational number?

rational


Is a negative fraction a real number a rational number an irrational number an integer or a whole number?

I dont know nerdsI sometimes wish that I knew only nerds.The answer is rational.


Is 5.2 Rational Or Irrational?

-52 is a rational number because it can be expressed as a fraction in the form of -52/1


How do you know if a number rational or irrational?

If it can be expressed as a ratio of two integers, p and q (q not 0) then it is rational. Except in some trivial cases, it is not easy to know if a number is not rational - and is therefore irrational.


How do you know if a number is rational or irrational?

Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.


Is 4.472135955 rational or irrational?

For the people that are trying to figure out if its irrational or rational, its IRRATIONAL


Is 2.64575 a rational or irrational number?

2.64575 is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.


Can the square of an irrational number be rational?

The answer to this question confuses me. The square root of two is an irrational number, so obviously if the square root of two is squared it becomes two which is a rational number. Thinking of it that way then the answer is yes, the square of an irrational number can be a rational number. But . . . You had to know beforehand that the irrational number was the square root of another number. If you start out with an irrational number such as Pi you cannot square it because you cannot know the entire number in order to square it.


Is the square root of -25 rational or irrational number?

The square root of 25 is 5. 5 is a rational number. A rational number is a whole integer, like 3 or 5 or -8. Also, 4.333333... is a rational number because we know exactly what the number is. We know the number is 4 and 1/3, nothing more, nothing less. An irrational number is a number that goes on and on, with no specific pattern. A famous irrational number is pi. 3.14159....... Another example would be 453.788192742917471085723.......... Or 2.10100100010000100000........


Is 1.1 rational or irrational?

Rational!!!! Casually, any decimal that can be converted to a fraction/ratio is Rational. 1.1 = 1 1/10 = 11/10 Irrational numbers are those that cannot be converted to a fraction/ration. The most well known IRRATIONAL number is 'pi = 3.141592....' Irrational numbers are those were the decimals go to infinity AND the decimal digits are not in any regular order. Rational ; 1/3 = 0.3333.... Irrational ; sqrt(2) = 1.414213562....


Is pi an irrational or rational number How do you know?

Pi is an irrational number. Johann Heinrich Lambert proved that in the late 18th Century.