Lemma
MediumPermutations & combinations
AQuA-RAT train #4706 · Combinatorics · Permutations & combinations

Here are 6 periods in each working day of a school

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

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #4706

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