What proportion of rational numbers have repeating decimal representations?

Apropos of absolutely nothing:

2018-11-07 11_58_58-Book1 - Excel

Turns out it’s 3/10. Wonder why.

About Aeoli Pera

Maybe do this later?
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8 Responses to What proportion of rational numbers have repeating decimal representations?

  1. everlastingphelps says:

    3s. (2×7: 9, 5×7: 12, etc. That explains the 7s.)

  2. Aeoli Pera says:

    plz to explain “2×7: 9, 5×7: 12”. It looks like you’re adding, not multiplying, but you took the time to use the proper character so I’m confused.

    • everlastingphelps says:

      I am adding, that’s why I used : instead of =.

      I don’t have a why, but this is my intuition. It’s all about 3 (the same way 9 multiplied by something gives you two digits that add up to 9.)

  3. Obediah says:

    >Wonder why.

    Something something zodiacism metaphysics

  4. isolumikko says:

    Since you can write 0.5 as 0.49999999… the answer is “all of them”

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