Lemma
MediumCounting & chance
AQuA-RAT train #23866 · Probability · Counting & chance

A four-digit code can consist of the digits 0 ~ 9 except…

A four-digit code can consist of the digits 0 ~ 9 except that it does not contain the digits 1, 2, 4, and 6 at all. If repeated digits are allowed, what is the probability that it has at least one even digit?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #23866

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