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It depends.

A terminating decimal is a rational number.

A decimal which, after a finite number of places, becomes a repeating (or recurrent) decimal is also a rational number.

A decimal that is not terminating, nor [eventually] settles into a recurring pattern is not a rational number.

Note that the decimal need not become recurring immediately.

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13y ago

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Any decimal number that can be expressed as a fraction is a rational number

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11y ago
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Q: Is decimal a rational number
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