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21/3 is rational. Rational numbers are numbers that can be written as a fraction. Irrational Numbers cannot be expressed as a fraction.
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Earn +20 ptsQ: Is 21 over 3 a rational or irrational number?
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Continue Learning about Algebra
Is 21 over the square root of 4 a rational or irrational?
It is equal to 21/2 which is a rational number
Is 0.21 rational or irrational?
0.21 is a rational number because it can be expressed as a fraction in the form of 21/100
Is 0.21 a rational or irrational number?
Well, isn't that a happy little question! 0.21 is a rational number because it can be expressed as a fraction, specifically 21/100. Just like painting a beautiful landscape, math can be a lovely and calming experience once you understand its gentle rhythms.
Is 8 over 21 rational?
Yes, any integer over any other integer (except zero) is always a rational number.
What is an irrational number between 4.5 and 4.6?
the square root of 21
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