Lemma
MediumPermutations & combinations
AQuA-RAT train #13262 · Combinatorics · Permutations & combinations

There are 6 orators A, B, C, D, E, F

There are 6 orators A, B, C, D, E, F. In how many ways can the arrangements be made so that A always comes before B and B always comes before C.

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #13262

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