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OpenStudy (anonymous):
Prove that the number 0.123456789101112131415161718192021 : : : , obtained by writing all the integers in succession, from 1 on, in their decimal notation, is irrational. 1
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OpenStudy (anonymous):
lol, this is nice. because the set of integers is infinite. thus the decimal is infinite, and so you can never find a suitable fraction for it.
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