AQuA-RAT train #42499 · Number Theory · Digits

For a certain alarm system, each code is comprised of 5 digits…

For a certain alarm system, each code is comprised of 5 digits, but no digit can be used more than twice. How many codes can be made?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #42499

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