Lemma
MediumPermutations & combinations
AQuA-RAT train #63868 · Combinatorics · Permutations & combinations

There are 6periods in each working day of a school

There are 6periods in each working day of a school. In how many ways can 1 arrange 5subjects such that each subject is allowed at least 1period?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #63868

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