Lemma
MediumPermutations & combinations
AQuA-RAT train #46599 · Combinatorics · Permutations & combinations

How many ways can 10 letters be posted in 5 post boxes…

How many ways can 10 letters be posted in 5 post boxes, if each of the post boxes can take more than 10 letters?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #46599

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