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21 is a rational number.

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7y ago

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Related Questions

Is the square root of 21 an irrational or a rational number?

irrational


Is 21 over the square root of 4 a rational or irrational?

It is equal to 21/2 which is a rational number


Is 21 over 3 a rational or irrational number?

21/3 is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.


Is 10.01 a rational or irrational number?

10.01 is Rational. IRRATIONAL are those decimals, which recur to infinity and there is NO regular order in the decimal digits. pi = 3.141592..... is Irrational But 3.333333..... is rational , because the decimal digits are in a regular order. Definitely an irrational number cannot be converted into a rational number/ratio/fraction/quotient. So 10.01 is rational because it can be converted to a ratio/fraction/quotient of 10 1/100 or 1001/100


Is 4.2 an irrational or rational number?

It is rational because it can be expressed as a fraction which is 21/5


Is 37.5 a rational or irrational number?

Rational


Is 0.05 a rational or irrational number?

It is a rational number.


Is the square root of 21 a rational number?

No. The square root of an integer is either an integer, or an irrational number.


Is 34.5 rational or irrational?

is 34.54 and irrational or rational. number


Is 4.121314 is a rational number or irrational?

it is a rational number but 4.121314..... is an irrational no


When an irrational number is divided by a rational number is the quotient rational or irrational?

Irrational.


Is the product of a rational number and an irrational number rational or irrational?

Such a product is always irrational - unless the rational number happens to be zero.