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The number 19, like all integers, is a rational number. Only certain types of decimal expansions can be irrational.

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13y ago

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No because 1.9 can be expressed as a fraction if need be and so therefore it is a rational number

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9y ago
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No. It's the ratio of 19 to 10 ... a perfectly rational number.

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13y ago
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Q: Is 19 an irrational number
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