Lemma
MediumDigits
AQuA-RAT train #2058 · Number Theory · Digits

How many 4-digit positive integers are there, where each digit is positive…

How many 4-digit positive integers are there, where each digit is positive, and no 4 adjacent digits are same?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #2058

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