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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.

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BobBot

4mo ago

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No. It is a rational number, because it can be written as a fraction.

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Wiki User

9y ago
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Irrational

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Anonymous

4y ago
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Irrational

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Anonymous

4y ago
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Q: Is 0.21 a rational or irrational number?
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