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4 January, 11:43

Is 0.404040 ... rational or irrational

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  1. 4 January, 15:02
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    Decimal expansions are in the group of irrational numbers.

    "The decimal expansion of an irrational number never repeats or terminates (the latter being equivalent to repeating zeroes), unlike any rational number. The same is true for binary, octal or hexadecimal expansions, and in general for expansions in every positional notation with natural bases."
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